Exam 7: A: Skin and Its Appendages

The main function of the dermoepidermal junction is to act as a barrier to harmful chemicals and bacteria.

High levels of lysosomal enzymes are found in the cells of the stratum granulosum layer.

The stratum lucidum and stratum basale are sometimes referred to as the stratum germinativum.

One of the factors associated with the common type of baldness is the presence of testosterone.

Apocrine sweat glands begin functioning shortly after birth.

The subcutaneous layer is also referred to as the superficial fascia.

Melanocytes are sometimes called Langerhans cells.

Lanugo is the technical term used for adult body hair.

Keratin is an important skin pigment that protects against ultraviolet light.

Melanocytes account for approximately 55% of the epidermal cells.

Jaundice can occur because of a very high concentration of vitamin A in the skin.

The dermis contains both voluntary and involuntary muscle fibers.

Lanugo is usually found on a fetus or newborn.

The stratum granulosum is sometimes called the barrier layer of the skin.

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

A primary function of the dermal-epidermal junction is to "glue" together the dermis and the epidermis.

Apocrine sweat glands are the most numerous and widespread sweat glands in the body.

The germinal matrix is a small mound of dermis that supplies blood to the hair follicle.

Cells in the stratum lucidum do not have a high metabolic rate because they usually do not have a nucleus.

Prolonged exposure to the sun causes decreased melanin production.