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Animal Physiology: 1
A deck of flashcards for Undergraduate Study of Biology.
| Question | Answer |
|---|---|
| What is the main propulsive organ? | The heart. |
| Function of the Arterial system | To distribute oxygenated blood (except for the pulmonary artery) and regulate pressure. |
| Function of the Capillaries | Capillaries are very thin blood vessels. They bring nutrients and oxygen from the heart to tissues and remove waste. |
| Function of the Venous system | The part of the circulation in which the blood is transported from the periphery back to the heart. |
| 4 types of movement of blood through the body | Rhythmic contractions of the heart (v), elastic recoil of arteries following filling by the heart (v), squeezing of b. vessels in body movements (anthropods) & peristaltic contractions of smooth muscle surrounding blood vessel (earthworms). |
| Functions of the Valves | Controls direction of blood flow, where when pressure is greater behind the valve, it opens and when the pressure is greater in front, it does not open. They are one-way valves. |
| Functions of smooth muscle | Controls diameter of peripheral vessels, thereby alternating resistance and flow to different tissues. |