Why is the part labelled 5 thicker than 6?
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Correct Answer: Option D
Explanation:
The correct answer is:
D. 5 pumps blood round the body and 6 pumps blood into the lungs
Explanation:
- Part 5 is the left ventricle, which is thicker because it needs to pump blood at a higher pressure to circulate it throughout the entire body.
- Part 6 is the right ventricle, which pumps blood to the lungs through the pulmonary circulation at a lower pressure. The right ventricle doesn't need as much muscle thickness since it only needs to pump blood a short distance (to the lungs).
Therefore, the left ventricle (5) is thicker than the right ventricle (6) because it is responsible for pumping blood through the entire body, requiring more force.
The correct answer is:
D. 5 pumps blood round the body and 6 pumps blood into the lungs
Explanation:
- Part 5 is the left ventricle, which is thicker because it needs to pump blood at a higher pressure to circulate it throughout the entire body.
- Part 6 is the right ventricle, which pumps blood to the lungs through the pulmonary circulation at a lower pressure. The right ventricle doesn't need as much muscle thickness since it only needs to pump blood a short distance (to the lungs).
Therefore, the left ventricle (5) is thicker than the right ventricle (6) because it is responsible for pumping blood through the entire body, requiring more force.