A&P Semester 1 Review: Unit 3

Front

What is keratin?

Back

Keratin is a structural protein that is shaped like string and is found in hair, nails, and the outer layer of skin.

Front

Which layer of the skin contains large amounts of keratin?

Back

Epidermis

Front

What is dermatology?

Back

Dermatology is the branch of medicine that focuses specifically on diseases of the integumentary system.

Front

What happens when a tattoo needle penetrates the dermis?

Back

A tattoo needle enters into the dermis of the skin which contains blood vessels and nerves, causing bleeding and pain.

Front

What type of skin cancer is characterized by a red bump around the oil glands?

Back

Sebaceous gland carcinoma.

Front

What is the most prevalent type of cancer in the United States?

Back

Skin cancer, specifically basal cell carcinoma.

Front

What are the main functions of the integumentary system?

Back

The integumentary system protects the body, regulates temperature, and provides sensory information.

Front

What is the difference between the epidermis and dermis?

Back

The epidermis is the outermost layer of skin, while the dermis is the layer beneath it that contains blood vessels, nerves, and connective tissue.

Front

What is the role of melanocytes in the skin?

Back

Melanocytes are cells in the skin that produce melanin, which gives skin its color and protects against UV radiation.

Front

What is the significance of the hypodermis?

Back

The hypodermis, or subcutaneous layer, provides insulation, cushioning, and energy storage.