Ch 21 Skin

Question 1

What are the main functions of the integumentary system?

Answer 1

1. Protection
2. Temperature regulation
3. Sensory perception

Question 2

What is in the integumentary system?

Answer 2

1. skin
2. hair
3. nails
4. sudoriferous glands (sweat)
5. sebaceous glands (oil)

Question 3

What are the two types of sudoriferous sweat glands

Answer 3

1. apocrine glands

2. eccrine glands

Question 4

Sudoriferous gland associated with hair follicles in the armpit and genital areas that become active during puberty

Answer 4

apocrine glands

Question 5

Sudoriferous glands not associated with hair follicles and functions throughout lifetime

Answer 5

eccrine glands

Question 6

T or F. Eccrine glands are found all over the body, especially the forehead, upper lip, palms and soles.

Answer 6

true

Question 7

These glands secrete sebum and are associated with hair follicles

Answer 7

sebacious glands

Question 8

What are hair and nails made of?

Answer 8

keratin

Question 9

BSA

Answer 9

body surface area

Question 10

SLE

Answer 10

systemic lupus erythematosus

Question 11

UV

Answer 11

ultraviolet

Question 12

derm/o, dermat/o

Answer 12

skin

Question 13

kerat/o

Answer 13

keratin, horny layer of the skin

Question 14

melan/o

Answer 14

dark, black, melanin

Question 15

hidr/o, idr/o

Answer 15

sweat, perspiration

Question 16

seb/o

Answer 16

sebum, sebaceous gland

Question 17

trich/o

Answer 17

hair

Question 18

onych/o

Answer 18

nail

Question 19

The integumentary system protects against which four things?

Answer 19

1. infection
2. dehydration
3. ultraviolet radiation
4. injury

Question 20

The outermost portion of the skin that consists of 4 to 5 layers (strata) of epithelial cells

Answer 20

epidermis

Question 21

The deepest layer produces new cells.

Answer 21

the stratum basale or basal layer

Question 22

As basal layer cells gradually rise toward the surface, they die and become filled with ____, a protein that thickens and toughens the skin.

Answer 22

keratin

Question 23

The outermost (horny) layer of the epidermis that is composed of flat, dead, protective
cells that are constantly being shed and replaced.

Answer 23

the stratum corneum

Question 24

Some of the cells in the epidermis produce ____, a pigment that gives color to the skin and protects against sunlight.

Answer 24

melanin

Question 25

Beneath the epidermis composed of connective tissue, nerves, blood vessels, and lymphatics.

Answer 25

dermis

Question 26

T or F. The dermis supplies support and nourishment for the skin.

Answer 26

true

Question 27

The _____ beneath the dermis

is composed mainly of connective tissue and fat.

Answer 27

subcutaneous tissue

Question 28

The sudoriferous (sweat) glands act mainly in ______ by releasing a watery fluid that evaporates to cool the body.

Answer 28

temperature regulation

Question 29

The sebaceous glands release an oily fluid, sebum, that _____ the hair and skin and prevents drying.

Answer 29

lubricates

Question 30

Hair develops within a sheath or _____ and grows from

its base within the deep layers of the skin.

Answer 30

hair follicle

Question 31

Each nail develops from a growing region at its _____.

Answer 31

proximal end