Astronaut Health Challenges in Microgravity

The video explores the effects of microgravity on astronauts' bodies, focusing on muscle atrophy, bone density loss, cardiovascular issues, and vision changes. It highlights the challenges astronauts face upon returning to Earth, such as difficulty walking and maintaining balance. Scott Kelly's experience is used to illustrate these effects. The importance of exercise regimens in space to mitigate these issues is emphasized, ensuring astronauts' health during long-duration missions.

What is one of the main challenges astronauts face when they return to Earth?

• Increased appetite

• Muscle atrophy

• Improved vision

• Enhanced balance

Why do astronauts experience muscle atrophy in space?

• They exercise too much

• They sleep more

• Their muscles don't need to support body weight

• They consume less protein

What is a consequence of bone density loss in astronauts?

• Stronger bones

• Faster healing

• Increased risk of fractures

• Improved flexibility

How does microgravity affect the cardiovascular system of astronauts?

• The heart pumps more vigorously

• Blood vessels become more rigid

• Blood pressure increases

• The heart shrinks

What happens to astronauts' vision in microgravity?

• They become colorblind

• Eyeball shape changes, affecting focus

• It remains unchanged

• It improves significantly

How did Scott Kelly describe his sensation of walking after returning to Earth?

• Like walking on clouds

• Like floating in water

• Like a drunken stumble

• Like running a marathon

What was necessary for Scott Kelly to regain his strength and coordination?

• More sleep

• A special diet

• Intensive physical therapy

• Increased water intake

What is crucial for astronauts to mitigate the effects of microgravity?

• Increased sleep

• Regular exercise routines

• More time in space

• A high-calorie diet

Why is it important to understand the challenges of microgravity?

• To increase the number of astronauts

• To reduce space travel costs

• To improve space technology

• To better prepare astronauts for long missions

What is the main takeaway regarding astronauts' health in space?

• They should avoid exercise

• They need to maintain fitness routines

• They should eat more

• They should sleep less