NUTRITION
THE HUMAN BODY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Why does the heart atrophy in space
|
|
because it has less fluid to pump
|
|
|
becuase it does not have to work as hard to pump blood
|
|
|
because lack of gravity makes it harder to pump
|
|
|
because of how fast the astronauts are moving in the ISS
|
Explanation:
Detailed explanation-1: -Because astronauts work in a weightless environment, very little muscle contraction is needed to support their bodies or move around. Without regular use and exercise our muscles weaken and deteriorate. It’s a process called atrophy.
Detailed explanation-2: -Weightlessness in space induces initially an increase in stroke volume and cardiac output, accompanied by unchanged or slightly reduced blood pressure. It is unclear whether these changes persist throughout months of flight.
There is 1 question to complete.