MIDTERM 01 - Integumentary System

Question 1

Are cells that synthesize keratin

Answer 1

Keratinocytes

Question 2

Process wherein the cells change shape and chemical composition

Answer 2

Keratinization

Question 3

The dermis is _____ to _____ times thicker than the epidermis

Answer 3

10-20 times

Question 4

A layer of connective tissue in the skin

Answer 4

Subcutaneous tissue

Question 5

Cuboidal and columnar cells in the stratum basale undergoes mitotic division about every __________ days

Answer 5

19

Question 6

Stratum spinosum consists of lipid-filled vesicles called __________

Answer 6

Lamellar bodies

Question 7

Contains many blood vessels that supply the overlying epidermis with nutrients

Answer 7

Dermal papillae

Question 8

Are ridges that increase friction and improve the grip of the hands and feet

Answer 8

Fingerprints

Question 9

Provides protection against ultraviolet light from the sun

Answer 9

Melanin

Question 10

Scale used to describe a person’s skin type in terms of response to ultraviolet radiation exposure

Answer 10

Fitzpatrick scale

Question 11

Is a recessive genetic trait that causes a deficiency or an absence of melanin

Answer 11

Albinism

Question 12

Is a yellow pigment found in plants such as squash and carrots

Answer 12

Carotene

Question 13

Other name for subcutaneous tissue

Answer 13

Hypodermis

Question 14

Tissue that attaches skin to underlying bone and muscle

Answer 14

Subcutaneous tissue

Question 15

Extension of the epidermis that originates deep in the dermis

Answer 15

Hair follicle

Question 16

Protrudes above the surface of the skin

Answer 16

Hair shaft

Question 17

Found below the surface of the skin

Answer 17

Root, Hair bulb

Question 18

Single layer of overlapping cells that hold the hair in the fair follicle

Answer 18

Cuticle

Question 19

An extension of the dermis that protrudes into the hair bulb

Answer 19

Hair papilla

Question 20

Are smooth muscle cells whose contraction causes the hair to become more perpendicular to the skin surface

Answer 20

Arrector pili

Question 21

An oily white substance rich in lipids

Answer 21

Sebum

Question 22

A thin plate consisting of layers of dead stratum corneum cells that contain a very hard type of keratin

Answer 22

Nail

Question 23

Visible part of the nail

Answer 23

Nail body

Question 24

The part of the nail covered by the skin

Answer 24

Nail root

Question 25

The stratum corneum that extends onto the nail body

Answer 25

Cuticle/eponychium

Question 26

The nail root extends distally from the __________

Answer 26

Nail matrix

Question 27

Can be seen through the nail body as a whitish, crescent-shaped area at the base of the nail

Answer 27

Lunula