Integumentary Review

In which layer of the skin are melanocytes located?

• Dermis
• Subcutaneous/ hypodermis
• Epidermis
• None of the above

What is sebum?

• A hormone
• Oily secretion
• Sweat

Where are hair roots located within the skin?

• In the epidermis
• In the subcutaneous/hypodermis
• in the dermis
• None of these

What protein are hair , skin, and nails made of?

• Keratin
• Collagen
• Melanin

What is the function of the arrector pili muscle?

• To secrete sebum
• To produce keratin
• To make hairs stand on end
• None of these

What is the function of melanin?

• To protect the DNA in cells from UV radiation.
• To protect the skin from bug bites
• To produce fat
• To help the body produce vitamin D

A main function of the integumentary system is ____________________.

• To protect the body from infection
• To receive pressure, pain, heat, and cold stimuli
• To maintain an internal body temperature
• all of these

Which layer of skin contains blood vessels, glands, hair follicles, and nerves embedded within it?

• dermis
• epidermis
• nasodermis
• hypodermis

What is another name for the hypodermis?

• epidermis
• subcutaneous layer
• stratum basale

Skin color is due to a pigment called

• Keratin
• Melanin
• Chromatin
• Epithelium