Unit 5) Space Background Information Quiz

What happens to the skeletal muscle system in the absence of gravity in space?

• The muscles become stronger due to increased use.

• The muscles do not undergo any changes.

• The muscles get weaker because they are not used as much.

• The muscles are replaced by other tissues.

What is the primary cause of weight in objects on Earth?

• The Earth's rotation

• Gravity pulling objects toward the center of Earth

• The Earth's magnetic field

• Atmospheric pressure

What happens to muscle strength in astronauts on the International Space Station (ISS) despite exercising each day?

• They gain muscle strength.

• They maintain the same muscle strength as on Earth.

• They lose muscle strength.

• They experience no change in muscle strength.

How does the absence of gravity affect the blood system in space?

• The heart and veins work harder to pump blood.

• The heart gets larger and pumps more blood.

• The heart and veins change, affecting blood flow.

• Gravity has no effect on the blood system in space.

What is one of the serious changes that occur to the heart when in space for a prolonged period?

• The heart increases in size and shape.

• The heart decreases in size and shape.

• The heart stops working efficiently.

• The heart loses muscle mass and blood flow is reduced.

After how many days of being in space does the body start to adapt and begin to perform better, although not as well as on Earth?

• After 5 to 6 days

• After 9 to 14 days

• After 5 to 6 months

• After 1 to 2 years

What happens to our bones in space due to the lack of gravity?

• Bones become stronger and denser.

• Bones do not change at all.

• Bones lose the ability to reshape.

• Bones make less new bone and lose density.

Why do our bones make less bone in space?

• Because the body needs more bone in space.

• Because there is too much gravity in space.

• Because there is no need for as much bone without gravity.

• Because the bone cells become inactive in space.

What is one of the effects of space travel on the immune system?

• The immune system becomes stronger.

• The immune system suffers.

• The immune system remains unchanged.

• The immune system is not affected by space travel.

What factors in space affect how the immune system does its job?

• Stress, high gravity, and more contact with other people

• Stress, low gravity, and less contact with other people

• No gravity, isolation, and constant contact with Earth

• Low stress, high gravity, and more contact with other people