Integumentary System

Front 1

Keratinocytes are the predominant cells in the:

Back 1

epidermis

Front 2

Nourishment to cells in the epidermis is provided by:

Back 2

blood vessels in the dermal papillae

Front 3

Absorption of damaging light rays is the primary function of:

Back 3

melanin

Front 4

The layer of the skin from which new epidermal cells are derived is the

Back 4

Stratum basale

Front 5

The function of keratin is to:

Back 5

make skin tough and waterproof

Front 6

The reproducing cells of the epidermis are found in the

Back 6

Stratum basale

Front 7

The stratum basale contains:

Back 7

stem cells of keratinocytes

Front 8

Which of the following is most superficial?

Back 8

stratum corneum

Front 9

The epidermis is made up of:

Back 9

stratified squamous epithelium

Front 10

"Goosebumps" occur due to:

Back 10

the action of arrector pili muscles as they raise hairs to an upright position

Front 11

The outermost layer of the epidermis is the:

Back 11

Stratum corneum

Front 12

Sweat is produced by:

Back 12

sudoriferous glands.

Front 13

Which of the following is present in thick skin but not in thin skin?

Back 13

stratum lucidum

Front 14

The function of melanin is to

Back 14

Protect skin from ultraviolet light

Front 15

Hair and nails are modifications of the

Back 15

Epidermis

Front 16

The stratum corneum is:

Back 16

made up of dead cells.

Front 17

Melanocytes

Back 17

a) are spidery-shaped cells in contact with cells in the stratum basale
b) Forms structures called melanosomes
c) Produces a substance incorporated by other cells

Front 18

Which of the following statements is TRUE regarding the epidermis?

Back 18

It is keratinized.

Front 19

The "ABCD" signs are used to assess:

Back 19

a skin lesion suspected of being a malignant melanoma.

Front 20

The average length of time for a cell to be produced by the stratum basale, rise to the surface, become keratinized, and slough off is about how long?

Back 20

one month

Front 21

A skin condition in which abnormal keratin is produced and keratinocytes are shed prematurely is:

Back 21

psoriasis.

Front 22

Corpuscles of touch (Meissner's corpuscles) are located in the:

Back 22

dermal papillae.