Exploring the Anatomy and Function of the Skeletal System

What was the primary goal of Scott Kelly and Mikhail Kornienko's mission on the ISS?

• To test new space suits

• To conduct experiments on plant growth

• To study the effects of microgravity on the human body

• To repair the ISS

What is the most serious damage caused by a microgravity environment?

• Bone loss

• Loss of muscle mass

• Trouble sleeping

• Puffy faces

How often does the human skeleton regenerate itself?

• Every 5-6 years

• Every 12-15 years

• Every 2-3 years

• Every 7-10 years

What is the primary function of red bone marrow?

• Protecting against diabetes

• Regulating blood calcium levels

• Producing blood cells

• Storing energy as fat

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Which bones are classified as axial bones?

• Pelvis and shoulder blades

• Skull and rib cage

• Femur and humerus

• Tibia and fibula

What type of bone is the femur classified as?

• Long bone

• Irregular bone

• Flat bone

• Short bone

What are osteons?

• Cylindrical, weight-bearing structures in bones

• Bone-breaking cells

• Tiny cross-hatching supports in spongy bone

• Bone-building cells

What is the role of osteoblasts?

• To store energy as fat

• To monitor and maintain bone matrix

• To build bone tissue

• To break down bone tissue

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What process do osteoclasts initiate when they detect a microscopic fracture?

• Bone formation

• Bone remodeling

• Bone resorption

• Bone mineralization

Why do astronauts need to exercise extensively in space?

• To prevent bone loss

• To stay mentally stable

• To improve cardiovascular health

• To maintain muscle mass