Question

i) What is the significance of partition between the chambers of heart?
ii) How does sweat help keep you cool?

Answer 1

Answer:

The cardiac chambers and valves are organized such that they separate systemic from pulmonary circulation and ensure directional blood flow.

Explanation:

When the sweat hits the air, the air makes it evaporate (this means it turns from a liquid to a vapor). As the sweat evaporates off your skin, you cool down. Sweat is a great cooling system, but if you're sweating a lot on a hot day or after playing hard you could be losing too much water through your skin.

Answer 2

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The cardiac chambers and valves are organized such that they separate systemic from pulmonary circulation and ensure directional blood flow.

$\small\mathbf\red{{Explaination\::-}}$

When the sweat hits the air, the air makes it evaporate (this means it turns from a liquid to a vapor). As the sweat evaporates off your skin, you cool down. Sweat is a great cooling system, but if you're sweating a lot on a hot day or after playing hard you could be losing too much water through your skin.