Circulatory, Respiratory, & Excretory Systems. Bellwork – 3/16/15 List the components of whole blood.

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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 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 pH, regulate H 2 O content

Dialysis