Lesson 15.3 Your Circulatory System Tabs: 1. The Body s Transport System p. 376 2. Blood 3. Problems and Care On the Back: 1. Circulation
The Body s Transport System Circulatory System: Organs and tissues that transport essential material to the body cells and remove the waste Cardiovascular System: Another name for the Circulatory System
The Body s Transport System Pulmonary Circulation: Flow of blood from the heart to the lungs and back to the heart Systemic Circulation: Flow of blood from the heart to all of the body tissue except the lungs Atrium: Top chambers of the heart Pump blood to the ventricles
The Body s Transport System Ventricle: Lower chambers of the heart Pump blood out of the heart Blood flows from atrium to ventricles Pulmonary refers to the lungs Cardiac refers to the heart
Types of Circulation in the Body Rt. -Lung- Lt. Rt. -Atrium- Lt. Rt. -Ventricle- Lt. Body Flow of Blood 1. Rt. Atrium 2. Rt. Ventricle 3. Pulmonary Artery to the Lungs 4. Lungs 1. Picks up O2 and Drops off CO2 5. Pulmonary Vein to Heart 6. Lt. Atrium 7. Lt. Ventricle 8. Aorta-largest artery in the body 9. Body 1. Drops off O2 picks up CO2 10.Back to Rt. Atrium
Blood Blood: A mixture of solids in a liquid called plasma Plasma: 92% water, transports blood solids, nutrients, hormones, and other materials Red Blood Cells: Carry 02 to cells and CO2 away from cells White Blood Cells: Helps fight disease and infection by attacking germs Platelets: Help blood forms clots at would site-prevents blood loss
Blood Blood Vessels: 80,000 miles of blood vessels that transport blood throughout the body Arteries carry blood away from the heart Veins carry blood to the heart Capillaries: Tiny tubes that carry blood from the arteries to the body cells and back to veins Actual location of O2/CO2 transfer
Blood Blood Pressure: Measured by a sphygmomanometer Systalic Pressure: pressure at the highest Occurs at ventricular contraction Diastolic Pressure: Pressure at the lowest point Occurs on atrial contraction BP is the measurement of the pressure that blood exerts on the walls of the arteries
Blood Blood Types A: B: AB: O: Has A substances Accepts A and O blood Has B substances Accepts B and O blood Has both A and B substances Accepts A, B,O, and AB blood (universal recipient) Has neither substance Only accepts O blood Can donate to all types
Blood Giving and Receiving Blood Mixing blood types can cause dangerous reactions, even death Can give blood between ages of 17-70 Blood is frozen/refrigerated at blood bank New needles are used for each donor Blood is tested for disease Positive blood is discard and donor may be notified
Problems of the Circulatory System Hypertension: Blood pressure is consistently high Can lead to heart attack, stroke, kidney and other organ failure Stroke: Results from blood clot that blocks vessels in the brain or a rupture of a blood vessel in the brain
Problems of the Circulatory System Heart Attack: Blockage in the flow of blood to the heart Arteriosclerosis: Hardening of the arteries Reduces the amount of blood that can flow through them Anemia: Abnormally low level of hemoglobin
Problems of the Circulatory System Leukemia: Disease in which extra white blood cells are produced Hemophilia: Disease in which the plasma doesn t contain substances that help the blood to clot
Care of the Circulatory System Limit Fat in Your Foods: Fatty deposits can form on the walls of your arteries Causes narrowing Increases blood pressure Makes heart work harder to circulate blood Damages organs Get Regular Physical Activity: Strengthens heart muscle Heart beats more efficiently
Care of the Circulatory System Avoid Tobacco: Contain nicotine Narrows arteries Increases blood pressure Manage Stress: Stress makes body secrete adrenaline Increases blood pressure