exam 2 questions

Front

What is the function of osteoclasts in the skeletal system?

Back

Osteoclasts are cells that resorb bone, breaking down bone tissue and releasing minerals back into the bloodstream.

Front

What layer is absent in thin skin compared to thick skin?

Back

The stratum lucidum is not found in thin skin.

Front

Which structure of the humerus articulates with the ulna?

Back

The trochlea of the humerus articulates with the ulna bone of the forearm.

Front

What is the innermost part of the hair shaft called?

Back

The medulla is the inner portion of the hair shaft formed from cells located in the center of the hair matrix.

Front

Which bones are considered part of the axial skeleton?

Back

The axial skeleton includes the skull, vertebral column, and rib cage, but does not include the feet.

Front

What is the primary role of osteoblasts in bone tissue?

Back

Osteoblasts are responsible for bone formation by synthesizing and secreting the bone matrix.

Front

What are the main differences between thin skin and thick skin?

Back

Thin skin has fewer layers of cells, lacks a stratum lucidum, and is found on most of the body, while thick skin has more layers and is found on palms and soles.

Front

What is the significance of the medulla in hair structure?

Back

The medulla provides structural support and may play a role in the hair's overall strength and flexibility.

Front

What bones make up the appendicular skeleton?

Back

The appendicular skeleton includes the limbs and the girdles (shoulder and pelvic) that attach them to the axial skeleton.

Front

How do osteoclasts and osteoblasts work together in bone remodeling?

Back

Osteoclasts break down old bone tissue while osteoblasts build new bone, maintaining bone health and strength.