Integumentary System

Front

What is the stratum granulosum?

Back

The stratum granulosum is a layer of the epidermis where keratinocytes begin to lose their nuclei and become more flattened, contributing to the skin's barrier function.

Front

What percentage of body weight does the skin account for?

Back

The skin accounts for approximately 12-15% of total body weight.

Front

What is the function of sebaceous glands?

Back

Sebaceous glands secrete sebum, an oily substance that helps to lubricate and waterproof the skin and hair.

Front

What are the primary functions of the skin?

Back

The primary functions of the skin include protection, sensation, thermoregulation, and vitamin D synthesis.

Front

What is the nail bed?

Back

The nail bed is the skin beneath the nail plate that provides support and nourishment to the nail.

Front

What is the role of the epidermis?

Back

The epidermis is the outermost layer of skin that provides a protective barrier against environmental hazards.

Front

What is keratinization?

Back

Keratinization is the process by which keratinocytes produce keratin, leading to the formation of a tough, protective outer layer of skin.

Front

What is the difference between the dermis and epidermis?

Back

The epidermis is the outer layer of skin, while the dermis is the thicker layer beneath it that contains connective tissue, blood vessels, and nerve endings.

Front

What is the role of melanocytes in the skin?

Back

Melanocytes are cells in the epidermis that produce melanin, the pigment responsible for skin color and protection against UV radiation.

Front

What is the function of sweat glands?

Back

Sweat glands help regulate body temperature through the secretion of sweat, which cools the body as it evaporates.