Circulatory Respiratory Excretory Systems Bellwork 31615 List the
Circulatory, Respiratory, & Excretory Systems
Bellwork – 3/16/15 List the components of whole blood.
1. Circulatory System A. Blood 1. Plasma- 90% H 2 O 2. Cells a. White blood cells- immunity b. Red blood cells- carry O 2 & CO 2; hemoglobin carries the molecules c. Platelets- for clotting
Bellwork – 3/17/15 What parts of your body make up the circulatory system? • Blood vessels • Heart
B. Blood Vessels 1. Arteries- carry blood AWAY from the heart 2. Veins- carry blood back to the heart 3. Capillaries- smallest vessels; where O 2, CO 2 , nutrients and waste move in or out of the blood.
C. The Human Heart 1. 4 Chambers a. Atria/atrium- small chambers on the top of the heart; collect blood as it enters b. Ventricles- large chambers on the bottom of the heart; pump blood out of the heart 2. Valves- one way doors; make the sound of the heartbeat
1. Respiratory System A. Function: To supply oxygen to all the parts of your body. It accomplishes this through breathing: inhaling oxygen-rich air and exhaling air filled with carbon dioxide, which is a waste gas.
2. Respiratory System A. Trachea: tube from nose and mouth to lungs B. Lungs 1. Bronchi- the 2 branches of the lungs 2. Bronchioles- smaller branches in each lung 3. Alveoli- small sacks surrounded by capillaries; gas exchange happens here
3. Excretory System A. Function: Maintains homeostasis by getting rid of waste. B. Organs 1. Lungs- eliminate CO 2 2. Skin- eliminates H 2 O, salts and urea by sweating 3. Kidneys- remove waste from blood, maintain p. H, regulate H 2 O content
Dialysis
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