Unit 1, Lecture 4

Front

What is the function of sebaceous glands?

Back

Sebaceous glands secrete sebum, an oily substance that lubricates and waterproofs the skin and hair.

Front

What is keratin?

Back

Keratin is a fibrous protein that forms the structural basis of hair, nails, and the outer layer of skin.

Front

What are merocrine sweat glands?

Back

Merocrine sweat glands are sweat glands that secrete a watery fluid directly onto the skin surface to help regulate body temperature.

Front

What is the stratum corneum?

Back

The stratum corneum is the outermost layer of the skin, composed of dead keratinized cells that provide a barrier to protect underlying tissues.

Front

What is the role of apocrine sweat glands?

Back

Apocrine sweat glands secrete a thicker fluid that is associated with body odor, particularly in areas with hair follicles.

Front

What causes body odor?

Back

Body odor is primarily caused by bacteria that break down sweat secretions from apocrine sweat glands.

Front

What is the hair shaft?

Back

The hair shaft is the visible part of the hair that extends above the skin surface, composed of dead keratinized cells.

Front

What is the difference between apocrine and merocrine sweat glands?

Back

Apocrine sweat glands secrete a thicker, odoriferous fluid, while merocrine sweat glands secrete a watery fluid for temperature regulation.

Front

What is the role of melanin in hair and skin?

Back

Melanin is a pigment responsible for the color of hair and skin, providing some protection against UV radiation.

Front

What is the function of hair follicles?

Back

Hair follicles are structures in the skin that produce hair and are associated with sebaceous and sweat glands.