cir_system

cir_system - Functions of Blood • Transport – Nutrients...

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Circulatory System
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Functions Transport oxygen and carbon dioxide Distribute nutrients Transport wastes Distribute hormones Regulate body temperature
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The Heart Cardiac cycle Systole – ventricle contraction Diastole – relaxation of all chambers following contraction of atria
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Blood’s Path Through the Heart - Deoxygenated 1. Vena cava 2. Right atrium 3. Right ventricle 4. Pulmonary Arteries 5. Lungs
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Blood’s Path Through the Heart - Oxygenated 6. Lungs 7. Pulmonary Veins 8. Left atrium 9. Left ventricle 10. Aorta 11. Body
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Influence on Heart Rate Nervous system Hormones
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Unformatted text preview: Functions of Blood • Transport – Nutrients – Gasses – Hormones – Waste Products • Immune Response Blood Composition • Plasma 55-60% • Red blood cells – carry oxygen • White blood cells - immunity • Platelets – clotting ***Blood is mostly saltwater!*** Blood Vessels • Arteries/arterioles – have smooth muscle in walls, take blood away from the heart • Capillaries – very small, place where most gas exchange occurs • Veins/venules – have valves, no muscle, take blood toward the heart...
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cir_system - Functions of Blood • Transport – Nutrients...

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