Integumentary System

Question 1

Body’s largest organ

Answer 1

skin

Question 2

Two layers of the skin

Answer 2

dermis and epidermis

Question 3

The superficial layer of the skin

Answer 3

epidermis

Question 4

The deepest layer in the strata

Answer 4

Stratum basale

Question 5

Superficial to the stratum basale are the __?

Answer 5

Stratum spinosum and stratum ganulosum

Question 6

Found only in thick skin

Answer 6

stratum lucidum

Question 7

Most superficial stratum

Answer 7

stratum corneum

Question 8

Thick skin is found on the?

Answer 8

Lips, palm of the hands, plantar surface of the feet

Question 9

5 general layers in the epidermis

Answer 9

stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum

Question 10

Begin in the stratum basale and make up the majority of epidermal cells

Function is to grow and divide

Answer 10

Keratinocytes (keratin)

Question 11

Produce skin pigments

Answer 11

Melanocytes (melanosomes)

Question 12

serve as the receptors for fine touch only

Answer 12

Tactile cells

Question 13

Immune system cells found in the stratum spinosum and the stratum garanulosum; alerts the body’s immune system to the invasion of pathogens

Answer 13

Dendritic cells

Question 14

The dermis is sometimes called

Answer 14

True skin

Question 15

It is the bumps in the superficial edge of the dermis, which are in direct contact with the epidermis

Answer 15

Papillae (This unique arrangement creates fingerprints)

Question 16

Gives skin strength

Answer 16

Collagen fiber

Question 17

Provides elasticity

Answer 17

Elastin fibers

Question 18

A very oily, lipid-rich substance, is produced by the sebaceous gland to moisturize the skin and hair

Answer 18

Sebum

Question 19

Most numerous types of sweat glands, located all over the body and are highly concentrated in the palmar and plantar regions.

Answer 19

Merocrine sweat gland

Question 20

Delivers its sweat through a duct leading to a hair follicle

Answer 20

Apocrine sweat gland

Question 21

Modified sweat gland that is only found in the ear canal

Answer 21

Ceruminous gland

Question 22

Modified swat gland found in the breast

Answer 22

Mammary gland

Question 23

The ___ produce the hair while the __ produce the hair pigment

Answer 23

Keratinocytes, melanocytes

Question 24

Hair’s growth center, and contains important nerves and blood vessels that provide amino acids for keratin production

Answer 24

Dermal papilla

Question 25

Smooth muscle associated with the hair follicle

Answer 25

arrector pili muscle

Question 26

Very fine and unpigmented, forms on a fetus during the last 3 months of its development

Answer 26

Lanugo

Question 27

Also unpigmented and very fine, replaces lanugo hair around the time of birth

Answer 27

Vellus

Question 28

Thick, coarse, and heavily pigmented, forms the eyebrow, eyelashes, and hair on the scalp

Answer 28

Terminal

Question 29

Thickening of the hair at the end of the hair follicle

Answer 29

Bulb

Question 30

Extends from the bulb to the skins surface

Answer 30

Root

Question 31

Section of the hair extending from the skins surface

Answer 31

Shaft