To adjust blood pressure independently in the capillaries of the gas-exchange surface and in the capillaries of the general body circulation,an organism would need a(n)

Question

Quizplus · Accepted Answer

The four-chambered heart allows for the separation of oxygenated and deoxygenated blood, allowing for independent control of blood pressure in different areas of the body. This is essential for organisms with high metabolic demands, such as birds and mammals, which require high blood pressure in the gas-exchange surface to optimize oxygen uptake and delivery, but lower blood pressure in the general circulation to prevent damage to organs and tissues. Open and closed circulatory systems lack the necessary separation of oxygenated and deoxygenated blood, while the lymphatic system is not directly involved in blood pressure regulation. Two-chambered hearts also lack the necessary separation of blood and are primarily found in fish.

To Adjust Blood Pressure Independently in the Capillaries of the Gas-Exchange