Integumentary System Review

Front

What is the stratum basale?

Back

The stratum basale is the deepest layer of the epidermis where cells are constantly dividing, contributing to the regeneration of the skin.

Front

What is the correct order of skin layers from superficial to deep?

Back

The correct order is: epidermis, dermis, hypodermis.

Front

What causes fingerprints?

Back

Fingerprints are caused by a layer of dermal papillae, which are small, nipple-like projections in the dermis that create unique patterns.

Front

What part of the nail is not visible?

Back

The nail matrix is not visible; it is located beneath the base of the nail and is responsible for nail growth.

Front

What forms lines of cleavage in the dermis?

Back

The arrangement of collagen fibers in the dermis forms lines of cleavage, which are important for surgical incisions.

Front

What is the function of the epidermis?

Back

The epidermis serves as a protective barrier against environmental hazards, pathogens, and water loss.

Front

What is the role of keratin in the skin?

Back

Keratin is a protein that provides strength and waterproofing to the skin, hair, and nails.

Front

What is the hypodermis?

Back

The hypodermis, also known as subcutaneous tissue, is the layer of fat and connective tissue beneath the dermis that insulates the body and absorbs shock.

Front

What is melanin and its function?

Back

Melanin is a pigment produced by melanocytes in the skin that provides color and protects against UV radiation.

Front

What are dermal papillae?

Back

Dermal papillae are small, finger-like projections from the dermis into the epidermis that increase surface area for exchange of oxygen, nutrients, and waste.