4 When the sperm penetrates the egg, the egg immediately releases a chemical creating a hard shell around it to keep all other sperm out
5 2 cell zygote The zygote begins to develop 4 cell zygote
6 8 cell zygote 16 cell morula
7 Blastocyst When zygote divides to 32 cells it Becomes known as a Blastocyst
8 Cross Section of a Blastocyst
9 Blastocyst The Blastocyst embeds into the uterine lining, and begins to develop the placenta Uterine lining
10 The placenta is the lining of the uterus that the umbilical cord will attach to. While nutrients and oxygen move across the placental wall, the embryo s blood and the mother s blood never mix
11 The Blastocyst begins to collapse Day 15 The primitive streak can be seen on the left side of this embryo. Day 17 The primitive streak can still be seen, and the opposite end of the embryo is starting to fold up.
12 Day 19 The neural tube is seen along with somites on either side of it. Somites - zipper-like motion of the neural tube closing together, three pairs of small bumps form on either side of the closure. they will form the skeleton and the major muscles of the body. Thirty-eight pairs of somites will line the neural tube within 2 weeks.
13 Day 22 Day 24
14 Day 26 Day 28
15 5 Week Embryo 5 Week, 4 day Embryo
16 At the end of four weeks: Embryo is 1/4 inch in length Heart, digestive system, backbone and spinal cord begin to form Placenta (sometimes called "afterbirth") begins developing The single fertilized egg is now 10,000 times larger than size at conception
17 At the end of 8 weeks: Embryo is 1 1/8 inches in length Eyes, nose, lips, tongue, ears and teeth are forming Penis begins to appear in boys Embryo is moving, although the mother can not yet feel movement Heart is functioning
18 At the end of 12 weeks: Fetus is 2 1/2 to 3 inches long Weight is about 1/2 to 1 ounce Nails start to develop and earlobes are formed Fetus develops recognizable form Arms, hands, fingers, legs, feet and toes are fully formed Eyes are almost fully developed By this stage, a fetus has developed most of his/her organs and tissues Fetal heart rate can be heard at 10 weeks with a special Doppler instrument
19 At the end of 4 months: Fetus is 6 1/2 to 7 inches long Weight is about 6 to 7 ounces Fetus is developing reflexes such as sucking and swallowing. Fetus may begin sucking his/her thumb Tooth buds are developing Sweat glands are forming on palms and soles Fingers and toes are well defined Sex is identifiable Skin is bright pink, transparent and covered with soft, downy hair Although recognizably human in appearance, the baby would not be able to survive outside the mother's body
20 At the end of 5 months: Fetus is 8 to 10 inches long Weight is about 1 pound Hair begins to grow on his/her head Soft woolly hair called lanugo will cover its body (and some may remain until a week after birth when it is shed) Mother begins to feel fetal movement Internal organs are maturing Eyebrows, eyelids and eyelashes appear
21 At the end of 6 months: Fetus is 11 to 14 inches long Weight is about 1 3/4 to 2 pounds Eyelids begin to part and eyes open occasionally for short periods of time Skin is covered with protective coating called vernix Fetus is able to hiccup
22 At the end of 7 months: Fetus is 14 to 16 inches long Weight is about 2 1/2 to 3 1/2 pounds Taste buds have developed Fat layers are forming Organs are maturing Skin is still wrinkled and red If born at this time, he/she will be considered a premature baby and require special care
23 At the end of 8 months: Fetus is 16 1/2 to 18 inches long Weight is about 4 to 6 pounds Overall growth is rapid this month Tremendous brain growth occurs at this time Most body organs are now developed with the exception of the lungs Movements or "kicks" are strong enough to be visible from the outside Kidneys are mature Skin is less wrinkled Fingernails now extend beyond fingertips
24 At the end of 9 months: Fetus is 19 to 20 inches long Weight is about 7 to 7 ½ pounds The lungs are mature Baby is now fully developed and can survive outside the mother's body Skin is pink and smooth He/she settles down lower in the abdomen in preparation for birth and may seem less active
25 Fetal Development Objectives: Understand the growth of a human fetus. Follow the development from conception to birth Introduction to the birth process Photo and Text Courtesy of Georgia Department of Human Resources, Division of Public Health
26 Conception Conception means a woman's egg has been fertilized by a man's sperm. Within a day, the egg begins to divide and develop rapidly. A few days later a cluster of cells arrives in the uterus By the eighth day after conception, this cluster has increased to hundreds of cells and attaches to the wall of the uterus where it continues its rapid growth.
27 Four Weeks After the cluster of cells attaches to the womb it is called an embryo. The embryo is between 1/100 and 4/100 inch long at this time. The embryo continues rapid growth.
28 6 Weeks The embryo is about ¼ inch long and has developed a head and a trunk. Structures that will become arms and legs, called limb buds, first appear. A blood vessel forms and begins to pump blood. This will develop into the heart and circulatory system. At this time, a ridge of tissue forms down the back of the embryo. That tissue will develop into the brain and spinal cord
29 * 8 Weeks The embryo is about ½ inch long. The heart now has four chambers. Fingers and toes begin to form. Reflex activities begin as the brain and nervous system develop. Cells begin to form the eyes, ears, jaws, lungs, stomach, intestines and liver.
30 10 Weeks The embryo, is about 1 to 1¼ inches long (the head is about half the length) and weighs less than ½ ounce. The beginnings of all key body parts are present, but they are not completed. Structures that will form eyes, ears, arms and legs can be seen. Muscles and skeleton are developing and the nervous system becomes more responsive.
31 12 Weeks The fetus is about 2½ inches long and weighs about ½ ounce. Fingers and toes are distinct and have nails. Hair begins to develop, but won't be seen until later in the pregnancy. The fetus begins small, random movements, too slight to be felt. The fetal heartbeat can be detected with a heart monitor. All major external body features have appeared. Muscles continue to develop.
32 14 Weeks The fetus is about 3½ inches long and weighs about 1½ ounces. The fetus begins to swallow, the kidneys make urine, and blood begins to form in the bone marrow. Joints and muscles allow full body movement. There are eyelids and the nose is developing a bridge. External genitals are developing.
33 16 Weeks The fetus is about 4½ inches long and weighs about 4 ounces. The head is erect and the arms and legs are developed. The skin appears transparent. A fine layer of hair has begun to grow on the head. Limb movements become more coordinated.
34 18 Weeks The fetus is about 5½ inches long and weighs about 7 ounces. The skin is pink and transparent and the ears are clearly visible. All the body and facial features are now recognizable. The fetus can grasp and move its mouth. Nails begin to grow. The fetus has begun to kick. Some women feel this movement.
35 20 Weeks The fetus is about 6¼ inches long and weighs about 11½ ounces. All organs and structures are formed Skin is wrinkled and pink to reddish in color - thin and close to the blood vessels. Protective skin coating, (vernix) begins to develop. Respiratory movements occur - lungs have not developed enough to permit survival outside the uterus. By this time, mothers usually feel the fetus moving. At this time an ultrasound can often identify the sex of the fetus.
36 22 Weeks The fetus is about 7½ inches long weighs about one pound. It has fingerprints and some head and body hair. It may suck its thumb and is more active. The brain is growing very rapidly. The fetal heartbeat can be easily heard. The kidneys start to work. At 23 weeks, approximately 31% of babies born survive. Babies born at this age require intensive care and usually have lifelong disabilities and chronic health conditions.
37 24 Weeks The fetus is about 8¼ inches long and weighs about 1¼ pounds. Bones of the ears harden making sound conduction possible. The fetus hears mother s sounds such as breathing, heartbeat and voice. The first layers of fat are beginning to form. This is the beginning of substantial weight gain for the fetus. Lungs continue developing At 25 weeks, approximately 68% of babies born survive. Babies born at this age require intensive care and usually have life-long disabilities and chronic health conditions.
38 26 Weeks The fetus is about 9 inches long and weighs about 2 pounds. The fetus can respond to sound from both inside and outside the womb. Reflex movements continue to develop and body movements are stronger. Lungs continue to develop. The fetus now wakes and sleeps. The skin is slightly wrinkled. At 27 weeks, approximately 87% of babies born survive. Babies born at this age require intensive care and have an increased risk of developmental delays and chronic health conditions.
39 28 Weeks The fetus is about 10 inches long and weighs about 2 pounds, 3 ounces. Mouth and lips show more sensitivity. The eyes are partially open and can perceive light. More than 90% of babies born at this age will survive. Some survivors have developmental delays and chronic health conditions.
40 30 Weeks The fetus is about 10½ inches long and weighs about 3 pounds. The lungs that are capable of breathing air, although medical help may be needed. The fetus can open and close its eyes, suck its thumb, cry and respond to sound. The skin is smooth. Rhythmic breathing and body temperature are now controlled by the brain. Most babies born at this age will survive.
41 32 Weeks The fetus is about 11 inches long and weighs about 3 pounds, 12 ounces. The connections between the nerve cells in the brain increase. Fetal development now centers on growth. Almost all babies born at this age will survive.
42 34 Weeks The fetus is about 12 inches long and weighs about 4½ pounds. Ears begin to hold shape. Eyes open during alert times and close during sleep. Almost all babies born at this age will survive.
43 36 Weeks The fetus is about 12 to 13 inches long and weighs about 5½ to 6 pounds. Scalp hair is silky and lies against the head. Muscle tone has developed and the fetus can turn and lift its head. Almost all babies born at this age will survive.
44 38 Weeks The fetus is about 13½ to 14 inches long and weighs about 6½ pounds. Lungs are usually mature. The fetus can grasp firmly. The fetus turns toward light sources. Almost all babies born at this age will survive.
45 40 Weeks The fetus is about 18 to 20 inches long and may weigh about 7½ pounds. At the time of birth, a baby has more than 70 reflex behaviors, which are automatic behaviors necessary for survival. The baby is full-term and ready to be born. Photo and Text Courtesy of Georgia Department of Human Resources, Division of Public Health
GRADE 6 FETAL DEVELOPMENT LESSON 2 FETAL DEVELOPMENT Lesson 2 GRADE 6 LEARNER OUTCOME W-6.3: Identify and describe the stages and factors that can affect human development from conception through birth.
Changes to and Your Body During Pregnancy 1st Trimester: Conception to Week 16 Your baby s traits and sex are set when the sperm meets the egg. During this time: The brain, nerves, heart, lungs and bones
STAGES OF PRENATAL DEVELOPMENT College of William and Mary Students for Life 2013 Germinal Period From conception to implantation Terms to Know Conception: the first stage in human development in which
STAGES OF PRE-NATAL DEVELOPMENT During this presentation refer to the TIMELINE OF PRENATAL DEVELOPMENT. Day 1 - conception takes place. 7 days - tiny human implants in mother s uterus. 10 days - mother
Abortion: A Woman s Right To Know Information on: Georgia Law Fetal development Medical risks of abortion, pregnancy, and childbirth Available pregnancy resources TABLE OF CONTENTS Introduction...1 Georgia
INFORMATION ON Fetal Development, Abortion And Adoption Written Materials in Compliance with West Virginia Law [Section 16-2I-1, et. seq.] as enacted by Senate Bill No. 170 of the year 2003 WEST VIRGINIA
An overview from conception to birth 1 Pregnancy Stages An overview from conception to birth Introduction This booklet has been prepared for you in consultation with midwives and current health care findings.
Pregnancy introduction This is a guide on what to expect, things to do and how the mother and baby grow. Important things to do when there s a positive pregnancy test. 1. Stop smoking and avoid exposure
The Developing Person Through the Life Span 8e by Kathleen Stassen Berger Chapter 4 Prenatal Development and Birth PowerPoint Slides developed by Martin Wolfger and Michael James Ivy Tech Community College-Bloomington
Period Date LAB. DEVELOPMENT OF A HUMAN FETUS After a human egg is fertilized with human sperm, the most amazing changes happen that allow a baby to develop. This amazing process, called development, normally
ORGAN SYSTEMS OF THE BODY DEFINITIONS AND CONCEPTS A. Organ a structure made up of two or more kinds of tissues organized in such a way that they can together perform a more complex function that can any
Human Body Systems Project By Eva McLanahan Students will work in groups to research one of the eleven body systems as found in Holt, Rinehart, and Winston Modern Biology (2002). Research will focus on
Prematurity What is prematurity? A baby born before 37 weeks of pregnancy is considered premature. Approximately 12% of all babies are born prematurely. Terms that refer to premature babies are preterm
Vocabulary Words Week 1 1. arteries Any of the blood vessels that carry blood away from the heart to all parts of the body 2. heart The muscular organ inside the chest that pumps blood through the body
You have been asked to write a short leaflet for young people about growing up and puberty. Explore and Discover... Teacher information Gallery visited Human Biology Suitable for Key Stage 3 (ages 11 to
Department of Health PREGNANCY WEEK BY WEEK This section describes week by week the way that your baby develops during your pregnancy. During the 40 weeks or so of pregnancy, your baby will grow from a
Session 1 Body Systems and Structures Teacher Notes Body Systems and Organs: Descriptions and Functions Heart The heart is a muscle that pumps blood to all parts of the body by contracting and releasing
Our Human Body On-site student activities Years 5 6 Our Human Body On-site student activities: Years 5-6 Student activity (and record) sheets have been developed with alternative themes for students to
Name Class Date Laboratory Investigation 24A Chapter 24A: Human Skin Human Anatomy & Physiology: Integumentary System You may refer to pages 386-394 in your textbook for a general discussion of the integumentary
Stem Cells Part 1: What is a Stem Cell? Stem cells differ from other kinds of cells in the body. When a stem cell divides by mitosis, each new cell has the potential to either remain a stem cell or become
Animal Systems: The Musculoskeletal System Tissues, Organs, and Systems of Living Things Cells, Cell Division, and Animal Systems and Plant Systems Cell Specialization Human Systems The Digestive The Circulatory
STUDENT S WORKSHEETS January April 2009 HUMAN LIFE CYCLE HANDOUT 1 1. Write the name of each stage in the right order: retirement adolescence babyhood adulthood - childhood 2. What stage does it belong
Understanding Fertility 6 Introduction The word fertile means the ability to become pregnant or to cause pregnancy. Basic knowledge of both the male and female reproductive systems is important for understanding
Name Period Date THE HUMAN BODY SYSTEMS System Function Diagram Major Organs Digestive 1. take in food (ingestion) 2. digest food into smaller molecules and absorb nutrients 3. remove undigestable food
Purpose: This program is designed to have the entire parish community pray for babies in danger of abortion. How to begin: 1. All the material needed to implement this program is contained in this packet.
Embryo Clay Model Embryogenesis and Stem Cell Development Objective: To identify stages and locations of early embryonic development To see at what point stem cells are totipotent, pluripotent, and multipotent
September, 2013 STUDENT WORKSHEETS 1 INSTRUCTIONS The following worksheets are mostly grouped according to the major systems of the body, just as the BODY WORLDS exhibition is. Complete these questions
Anatomy & Physiology Reproductive System Worksheet Male 1. Put the following structures in order from testis to urethra: ductus deferens, rete testis, epididymus, seminiferous tubules 1) 2) 3) 4) 2. What
Engage: Brainstorming Body s Record the structures and function of each body system in the table below. Body Nervous Circulatory Excretory Immune Digestive Respiratory Skeletal Muscular Endocrine Integumentary
B2 There is much growth and change that must occur in your baby s body. For babies born full-term (37-40 weeks), this growth and change occurred within the warm, dark, watery womb. For the premature baby,
Reader s Theater I AM the Most Important (A Script about the human body systems By Amy Bowden) Characters Judge (narrator) Digestive System Circulatory System Muscular System Respiratory System Nervous
Grade: 10,11, and 12 Subject: Anatomy and Physiology First Marking Period Define anatomy and physiology, and describe various subspecialties of each discipline. Describe the five basic functions of living
Embryology From Conception through Birth From Conception through Death - Immune system 18 months after birth - Lungs 3-8 years after birth - Nervous 12 years after birth - Reproductive Puberty - Skeletal
The Take-Apart Human Body As any teacher knows, children are naturally curious about their bodies. Their questions are endless, and present a tremendous educational opportunity: How do my ears work? Where
What Alcohol Does to the Body Chapter 25 Lesson 2 Short-Term Effects of Drinking The short-term term effects of alcohol on the body depend on several factors including: amount of alcohol consumed, gender,
Lesson Plan Sexual & Reproductive Anatomy and Physiology Part I TOPIC: Sexual & Reproductive Anatomy and Physiology Part I SUBJECT: Life Skills TARGET AGE RANGE: 9 15 TIME: 45 minutes IDEAL NUMBER OF LEARNERS:
Unit 3L.4: Organs in the Human body Keeping Healthy The Skeleton Science skills: Classification Observing Making models Data collection By the end of this unit you should: Compare the structure of humans
Chapter 7 Physical Development of the Infant Mason is 10 months old. Although he is large for his age, his motor skills lag far behind those of other children his age. For example, Mason has trouble sitting
Topic/Unit: Anatomy & Physiology Circulatory System Curricular Goals/ Learning Outcomes: Students will be able to identify the composition of blood and its function. Students will be able to differentiate
2003 Texas Department of Health. All rights reserved. Photos: Lennart Nilsson / Albert Bonniers Forlag AB, A Child Is Born, Dell Publishing Company. Used by permission. Drawings courtesy of TDH Art Department.
Stem Cell Quick Guide: Stem Cell Basics What is a Stem Cell? Stem cells are the starting point from which the rest of the body grows. The adult human body is made up of hundreds of millions of different
Female Reproductive System Unit 8 Lesson 2 Continued Female Reproductive System Female Reproductive System Female produce ovum or egg cells. The egg (ovum) cell is the female sex cell. Female Reproductive
National 3- Multicellular Organisms Revision Key Area 1: Structure and function of organs and organ systems and their role in sustaining life. What you must know: The basic structure and functions of main
1. The production of monoploid cells by spermatogenesis occurs in (1) zygotes (3) ovaries (2) testes (4) meristems Base your answers to questions 2 and 3 on the diagram below of the female reproductive
Bone Marrow or Blood Stem Cell Transplants in Children With Certain Rare Inherited Metabolic Diseases * A Review of the Research for Parents and Caregivers * Wolman Disease, Farber Disease, Niemann-Pick
Genetic material of all living organisms. Biology - 100 This antibiotic is made from a fungus that was first discovered growing on an orange and it became the first antibiotic to treat infection. Biology
Investigating the Human Body On-site student activities Years 7 8 Student activity (and record) sheets have been developed with alternative themes for students to use as guides and focus material during
8 th Grade HGD Chapter 16 Summary Your Body Systems Lesson 1 Your Skeletal System 1. Skeletal system is a body system: a. Bones b. Joints c. Connective tissue 2. Marrow, which is a soft tissue in the center
By Casey Schmidt and Wendy Ford Body systems Digestive System Circulatory System Respiratory System Excretory System Immune System Reproductive System Nervous System Muscular System Skeletal System Endocrine
Sexual reproduction in humans Name: WHY DO HUMANS NEED TO REPRODUCE? The reason humans reproduce is to have children so that our species can continue to exist. Humans reproduce sexually, which means like
BIO 137: CHAPTER 1 OBJECTIVES 1. Define the terms anatomy and physiology, and explain their relationship using an example of a human structure with its corresponding function. A. ANATOMY = the study of
Information About Pregnancy and Abortion Information About Pregnancy and Abortion This booklet was produced by the North Dakota Department of Health to meet the requirements of North Dakota Century Code
Vertebrate Development Chapter 60 Copyright McGraw-Hill Companies Permission required for reproduction or display Raven - Johnson - Biology: 6th Ed. - All Rights Reserved - McGraw Hill Companies Stages
Anatomy & Physiology Bio 2401 Lecture Instructor: Daryl Beatty Day 1 Intro to Lecture 1 Introduction: Daryl Beatty M.S. Microbiology 28 Years Dow, Research & TS&D. Family BC since 2007 More importantly:
Human Embryology Weeks 1-4 Week 1 Fertilisation to Implantation For this presentation embryonic age will be expressed as days or weeks from fertilisation. On this basis human pregnancy lasts about 266±3
C1 At birth, all newborns need a great deal of energy and nutrients from food to help their bodies grow, and to adjust to life outside the womb. Babies who are born early (premature) and/or with a very
Mycophenolate (CellCept ): risks of miscarriage and birth defects Patient guide Key points to remember Mycophenolate (CellCept ) causes birth defects and miscarriages Follow the contraceptive advice given
Chetek-Weyerhaeuser High School Anatomy and Physiology Units and Anatomy and Physiology A Unit 1 Introduction to Human Anatomy and Physiology (6 days) Essential Question: How do the systems of the human
Post-natal period Dear (prospective) parents, You have one of the volumes of the Growth Guide in your hands. The Growth Guide consists of seven practical booklets: Planning for Parenthood Pregnancy Breastfeeding
Bone Marrow or Blood Stem Cell Transplants in Children With Severe Forms of Autoimmune Disorders or Certain Types of Cancer A Review of the Research for Parents and Caregivers Is This Information Right
You are considering taking feminizing hormones, so you should learn about some of the risks, expectations, long term considerations, and medications associated with medical transition. It is very important
Stem Cell Research & Human Cloning Topics for Discussion Clarify the scientific and moral definition of cloning Discuss the facts about stem cells, therapies, and cures Learn the truth about the Church
Mini Medical School Lesson The American Osteopathic Association s (AOA) Mini Medical School Lesson is designed to help educators teach children about health and fitness. This lesson is aimed towards elementary
Parkinson s Disease (PD) Parkinson s disease (PD) is a movement disorder that worsens over time. About 1 in 100 people older than 60 has Parkinson s. The exact cause of PD is still not known, but research
tem ells /background /information Stem cell research Copyright 2007 MRC Centre for Regenerative Medicine, Institute for Stem Cell Research /02 /information Table of contents Page 01. What are stem cells?
67 The Human Skeleton Skull SCIENCE EXPLORER Focus on Life Science Prentice-Hall, Inc. Clavicle (collarbone) Scapula (shoulder blade) Carpals Metacarpals Phalanges Femur Tibia Humerus Ulna Sternum (breastbone)
THE SKELETAL SYSTEM The skeleton is the body s bony framework which consists of 206 bones. The bones are made up of water(45%), calcium and phosphorous(35%) and other organic materials(20%). The calcium
A Partners Beginning WELCOME TO BABY PARTNERS! Partners, Health Partners healthy mother and baby program, was designed to help educate pregnant Health Partners and KidzPartners members about the importance
1 CHINESE QI GONG EXERCISES TAUGHT BY JAKE PAUL FRATKIN, OMD Doctor of Oriental Medicine MORNING ROUTINE SUMMATION 1. Joint Opening Exercises 2. Meridian Stretching Exercises 3. Qi Circulation Exercises
For the Patient: Paclitaxel injection Other names: TAXOL Paclitaxel (pak'' li tax' el) is a drug that is used to treat many types of cancer. It is a clear liquid that is injected into a vein. Tell your
Your Largest Organ What is the largest organ in your body? Your heart? It is the largest muscle in your body, but you do have larger organs. Your brain? The brain inside your skull is pretty big, but it's
Breast-feeding Dear (prospective) parents, You have one of the volumes of The Growth Guide series in your hands. The Growth Guide consists of seven practical booklets: Planning for Parenthood Pregnancy
The Body Systems Lesson Plan Science Standards Addressed (From the Colorado Department of Education) http://www2.cde.state.co.us/scripts/allstandards/costandards.asp?stid=7&stid2=0&glid2=0 Standard 2-Life
X-Plain Low Testosterone Reference Summary Introduction Testosterone is the most important male sex hormone. It helps the body produce and maintain adult male features. Low levels of testosterone affect
Assignment Discovery Online Curriculum Lesson title: In Vitro Fertilization Grade level: 9-12, with adaptation for younger students Subject area: Life Science Duration: Two class periods Objectives: Students
THIRD GRADE HUMAN BIOLOGY 2 WEEKS LESSON PLANS AND ACTIVITIES LIFE CYCLE OVERVIEW OF THIRD GRADE ORGANISMS WEEK 1. PRE: Comparing and contrasting invertebrates and vertebrates. LAB: Learning about different
Range of Injury Scale Values Civil Liability Regulations 2014 SCHEDULE 4 Range of Injury Scale Values (summary) Item Injury ISV Range Part 1-Central Nervous System and Head Injuries 1 Quadriplegia 75 100
English April 2006 [OTH-7750] There are a number of different prenatal (before birth) tests to check the development of your baby. Each test has advantages and disadvantages. This information is for people
SELF-MASSAGE HANDOUTS Self-Massage for the Head and Face Self-Massage for the Low Back and Buttocks Self-Massage for Runners Self-Massage for the Neck Self-Massage for the Feet Self-Massage for the Arms