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6 Cards in this Set
- Front
- Back
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What is the septum necessary for ? |
Seperating deoxygenated and oxygenated blood |
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What is this separation vital for ? |
Two circuit pulmonary system In humans 🔹pulmonary circuit 🔹systematic circuit |
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Pulmonary circuit Heart ➡️ Lungs➡️Heart |
🔹 right ventricle pumps blood around pulmonary circuit 🔹blood gains oxygen (loses co2) in the lungs 🔹relatively short. Walls on right ventricle fairly thin |
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Systematic circuit Heart ➡️Body➡️Heart |
🔹The left ventricle pumps oxygenated blood to the head, arms, trunk and legs 🔹much longer route so walls of the left ventricle are thicker |
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Double 🆚 Singular circulation |
🔹 A double-circulation system allows oxygen-rich and oxygen-poor blood to keep separate 🔹Ensures that the blood pressure is high enough to reach all parts of the body 🔹some animals display single-circulation 🔹blood is pumped from their hearts around the body and back again. 🔹 A single circulation can only produce low blood pressure around most of the body 🔹This restricts activities of the animal |
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Portal system |
🔹A blood pathway that begins and ends in capillaries 🔹The vessels in a portal system do not connect directly to the heart 🔹The hepatic portal vein connects the stomach and intestines to the liver 🔹 The hepatic portal vein is an (eg) of a portal system |
