WorksheetsBones Crash Course Quiz #19
Total questions: 10
Worksheet time: 5mins
What is the main purpose of the mission of Scott Kelly and Mikhail Kornienko?
To explore the possibility of life on other planets
To study the effects of weightlessness on the human body
To search for derelict ships in space
To test the effects of space travel on mental stability
What is the most serious damage caused by a microgravity environment?
Loss of muscle mass
Puffy faces
Trouble sleeping
Damage to the bones
What is the function of bones in the human body?
Provide support and scaffolding
All of the above
Store energy as fat
Regulate blood calcium levels
How much bone loss do astronauts experience in space every month?
1-2 percent
5-6 percent
7-8 percent
3-4 percent
What is the main function of red bone marrow?
Produce the hormone osteocalcin
Store energy as fat
Make blood cells
Regulate blood calcium levels
What is the structure of long bones?
Longer than they are wide
Thinner and irregular
Flat and thin
Cube-shaped
What is the main function of osteoblasts?
Break down bone tissue
Initiate bone remodeling
Build new bone tissue
Regulate blood calcium levels
What is the process called when osteoclasts break down old bone tissue?
Resorption
Remodeling
Reconstruction
Regeneration
What stimulates bone remodeling and ultimately bone strength?
Lack of exercise
Stress and strain
Sedentary lifestyle
Low calcium intake
What happens to the osteoclasts in low gravity?
They increase their rate of bone resorption
They stop functioning
They initiate bone remodeling
They decrease their rate of bone resorption
