Integumentary System

What is the primary function of the integumentary system?

To protect the body from various external elements and pathogens.

What layers make up the skin?

Epidermis, dermis, and subcutaneous tissue.

What is the role of melanin?

Melanin gives the skin its color.

What are sudoriferous glands?

Sweat glands that help regulate body temperature.

Where is the basal layer located?

It is the deepest layer of the epidermis.

What is the primary component of the stratum corneum?

Flat, dead, protective cells that produce keratin.

What is the main function of the dermis?

To support and nourish the skin.

What is contained in the subcutaneous tissue?

Connective tissue and fat.

What are sebaceous glands responsible for?

They release sebum to lubricate hair and skin.

How does the skin respond to high temperatures?

Blood vessels dilate, allowing heat to escape.

What happens to the blood vessels when the body is cold?

They constrict to retain heat.

What is the function of adipose tissue in the skin?

To store fat and provide a source of energy.

What waste products are eliminated through perspiration?

Salt, waste, water, and heat.

How is Vitamin D produced in the skin?

Through the action of ultraviolet rays.

What does dermatology study?

Skin and skin diseases.

What are the protective roles of the skin?

Protects against ultraviolet rays and invasion of pathogens.

What is the significance of the melanocytes in the skin?

They produce melanin, influencing skin color.

What is the average surface area covered by an adult's skin?

More than 3000 square inches.

What type of epithelium composes the epidermis?

Squamous epithelium.

How are hair and nails classified in terms of their composition?

Both are made of nonliving material, mainly keratin.

What is the importance of sensory perception in the skin?

It allows the body to respond to pain, pressure, temperature, and touch.

What physical properties of the skin are evaluated during examinations?

Color, texture, temperature, moisture, and tenderness.

What is the outermost layer of the skin called?

Epidermis.

How does the body cool itself through the skin?

Sweat evaporates, cooling the body.

What happens to the skin cells in the basal layer?

They multiply and push upward, dying as they reach the surface.

Which layer of skin is considered the 'true skin'?

Dermis.

What role does the skin play in storage?

It temporarily stores fat, glucose, water, vitamins, and salts.

What results from the production of Vitamin D in the skin?

The Vitamin D molecule is matured in the liver after initiation in the skin.