describe the function of each organ system and identify the important organs involved label a diagram of the digestive and respiratory systems

Transcription

1 By the end of today I will be able to: describe the function of each organ system and identify the important organs involved label a diagram of the digestive and respiratory systems 1

2 The human body is a network of systems all linked for a common purpose maintaining homeostasis (a constant internal state). Cells are the smallest unit in each system. Many cells that look the same and work together form ssues. Tissues form organs (heart, kidney, liver, hands, and stomach). Organs related in funcon form organ systems. All of your organ systems need to be synchronized together to ensure that the organism has a stable internal environment (= HOMEOSTASIS). Integumentary skin, hair, nails external protection produces hair, oils, sweat 2

3 protects internal organs Skeletal bones, ligaments, tendons site of muscle attachment for movement produces blood cells Muscular muscles, tendons movement of body and body parts 3

4 Nervous brain, spinal cord, eyes, ears, nose, tongue nerves control body activities sensory detection and response maintain homeostasis Endocrine pancreas, pituitary gland, adrenal gland coordinate the chemicals in the body through hormone production 4

5 Circulatory heart, blood vessels, and cells moves blood to transport nutrients, gases, waste and warmth defends against infection Respiratory lungs, trachea, blood vessels gas exchange (oxygen for carbon dioxide) 5

6 HUMAN RESPIRATORY SYSTEM RIGHT BRONCHUS TRACHEA LEFT BRONCHUS LOBE OF RIGHT LUNG LEFT LUNG LOBE OF RIGHT LUNG BRONCHIOLES LOBE OF RIGHT LUNG LOBE OF RIGHT LUNG CAPILLARY NET SURROUNDING ALVEOLI ALVEOLI ALVEOLI (magnified and cross section) Digestive esophagus, stomach, intestines, liver, pancreas physical and chemical breakdown of food elimates solid waste (feces) 6

7 HARD PALATE TONGUE SALIVARY GLAND EPIGLOTTIS TRACHEA ESOPHAGUS LIVER GALL BLADDER STOMACH BILE DUCT PYLORIC SPHINCTER DUODENUM PANCREAS PANCREATIC DUCT LARGE INTESTINE SMALL INTESTINE RECTUM APPENDIX ANUS 7

8 Urinary Kidneys, bladder, liver filters blood to remove waste (creates urine) Reproductive testes, ovaries, tubes and glands sexual reproduction 8

9 integumentary nervous circulatory muscular respiratory digestive endocrine skeletal urinary reproductive s Working Together In order to maintain homeostasis, all of the organs in a system must work together the same can be said for organ systems. Alone, each system can funcon but cannot form an organism. Therefore, organ systems are interdependent. Describe how your organ systems work together to create the fight or flight response to a threat. brain recognizes threat (nervous system) Chemicals are released into the bloodstream (circulatory system, endocrine system) Breathing and heart rate increases (respiratory system, circulatory system) Blood is directed away from our digestive tract and directed into our muscles and limbs, which require extra energy and fuel for running and fighting (digestive system and locomotion system) Our pupils dilate. Our awareness intensifies. Our sight sharpens. Our impulses quicken. Our perception of pain diminishes. (nervous system) Our immune system mobilizes with increased activation (immune system) 9

10 Does it ever end? By its very design, the fight or flight response leads us to fight or to flee both creating immense amounts of muscle movement and physical exertion. This physical activity effectively metabolizes the stress hormones released as a result of the activation of our fight or flight response. Once the fighting is over, and the threat which triggered the response has been eliminated, our body and mind return to a state of calm. 10