Bone, Skeleton & Joints Test Review

Front

What is a flat bone?

Back

A flat bone is a type of bone that is thin and flat, providing protection to internal organs and a surface for muscle attachment. Example: Frontal bone.

Front

What happens when blood calcium levels are low?

Back

Osteoclasts are activated to break down bone tissue, releasing calcium into the bloodstream.

Front

What type of movement does a hinge joint allow?

Back

A hinge joint allows movement in only one direction, such as bending and straightening (e.g., elbow and knee joints).

Front

What is flexion in joint movement?

Back

Flexion is the action of bending a joint, decreasing the angle between two body parts.

Front

Where do osteocytes live?

Back

Osteocytes live in small spaces called lacunae within the bone matrix.

Front

What is the function of osteoblasts?

Back

Osteoblasts are cells that build new bone tissue by producing the bone matrix.

Front

What is the role of osteoclasts?

Back

Osteoclasts are cells that break down bone tissue, helping to regulate calcium levels in the blood.

Front

What is the difference between abduction and adduction?

Back

Abduction is the movement of a limb away from the midline of the body, while adduction is the movement of a limb toward the midline.

Front

What is the structure of a long bone?

Back

A long bone consists of a diaphysis (shaft), epiphyses (ends), and a medullary cavity filled with bone marrow.

Front

What is the purpose of the skeletal system?

Back

The skeletal system provides support, protection for internal organs, facilitates movement, and stores minerals.