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Question about Human Body: Circulatory System

Biology

Originais Teachy

Human Body: Circulatory System

Hard

(Originais Teachy 2023) - Question Hard of Biology

A group of astronauts is planning a long-term space mission. In space, the lack of gravity can have significant effects on the human body, including changes in the circulatory system. Considering the principles of physics and the function of the circulatory system in the human body, how might the absence of gravity impact the heart's ability to pump blood, and what potential challenges could this pose for the astronauts?
a.
The absence of gravity in space can cause a fluid shift towards the upper body and head, leading to 'puffy face syndrome'. It can also lead to a decrease in blood volume in the lower extremities, potentially affecting the heart's ability to pump blood efficiently.
b.
In space, the absence of gravity increases the heart's ability to pump blood, leading to an overproduction of red blood cells.
c.
The absence of gravity in space can cause a fluid shift towards the lower body, leading to 'puffy legs syndrome'.
d.
In the absence of gravity, the heart's ability to pump blood is not affected, but astronauts may experience increased blood pressure.
e.
The absence of gravity in space can cause an increase in blood volume in the lower extremities, potentially leading to an enlarged heart.

Answer:

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