Question

give reason
1. why ventricles have thick muscular wall.
2. Atria do have valves​

Answer 1

Answer:

1.The ventricles of the heart have thicker muscular walls than the atria. This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria. ... This is due to the higher forces needed to pump blood through the systemic circuit (around the body) compared to the pulmonary circuit.

2.There are valves between the atria and ventricles that make sure blood flows in one direction through your heart. Valves are also located at the “exits” or “doorways” of the heart for this same reason—to make sure blood flows in one direction.

Explanation:

Answer 2

Answer:

for 2nd one

for 1st one

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