Exam 10: Skin

Describe the formation of hair, and describe the parts of a hair follicle.

The hair follicle serves as a primary location of adult stem cells for skin cells like melanocytes.

Because vitamin D is a compound that influences several important chemical reactions, it can also be classified as an enzyme.

The thickest part of the skin is slightly more than 3 cm thick.

The hair itself is composed of three layers: the shaft, the cortex, and the cuticle.

Match each term with its description or definition. -Gland that secretes oil for hair and skin

Match each term with its description or definition. -Transfer of heat between two surfaces without actual contact

An abnormally thick region of the stratum basale is called a callus.

Radiation can account for both heat loss and heat gain.

Langer lines is the more correct name for stretch marks.

Fingernails are composed of heavily keratinized epidermal cells.

Which of the following is not true about thick or thin skin?

The cell layers of skin from the most superficial to the deepest appear in what order?

After several hours of landscaping the yard, Jennifer experienced a body temperature of 105° F; a rapid heart rate; headache; and hot, dry skin. She was taken to a medical facility and treated for what condition?

The death of melanocytes in the hair follicle of older people causes the hair to turn gray.

In which skin layer does the process of keratinization begin?

Surgical incisions that are made perpendicular to cleavage lines tend to heal with less of a scar.

Cells in the stratum spinosum layer are rich in RNA to make protein synthesis more efficient.

Blisters, severe pain, generalized swelling, and edema are characteristic of third-degree burns.

In order for proper growth and repair of the skin to occur, both insulin-like growth factor and vitamin D must be present in the correct amounts.