Integumentary

Question 1

Which of the following is not found in thick skin?

Stratum lucidum
Stratum corneum
Hair follicles
Sweat glands

Answer 1

Hair follicles

Question 2

You accidentally cut your fingernail too far, causing a sharp pain and some bleeding. Which part of your nail was injured?

Free edge
Lunula
Hyponychium
Nail bed

Answer 2

Nail bed

Question 3

The sloughed off cells of the periderm mix with sebum during the fetal period, creating a waterproof coating called

sebumous.
epithelial wax.
vernix caseosa.

Answer 3

vernix caseosa.

Question 4

The mass of vascularized connective tissue that temporarily forms during wound healing is

granulation tissue.
a scar.
a blood clot.
the reticular layer.

Answer 4

granulation tissue.

Question 5

Another name for the skin is the _________ membrane.

serous
parietal
mucous
cutaneous
visceral

Answer 5

cutaneous

Question 6

Which describes the skin’s form and function?

A barrier
Indicator of health
Washable
Self-renewing
All of the choices are correct.

Answer 6

All of the choices are correct.

Question 7

Keratinocytes are

the most abundant cell type in the epidermis.
found throughout all epidermal strata.
sometimes alive and sometimes dead, depending on where found.
able to synthesize the protein keratin.
All of the choices are correct.

Answer 7

All of the choices are correct.

Question 8

An individual reaches into her backpack and feels around for a pencil. What epidermal cells are being used to detect the different objects?

Melanocytes
Dendritic cells
Tactile cells
Keratinocytes

Answer 8

Tactile cells

Question 9

Among the components of the dermis are
a: Sweat glands
b: Hair follicles
c: Collagen fibers
d: Sensory nerve endings
e: Smooth muscle tissue

a, b, d
a, c, d
a, b, d, e
a, b, c, e
a, b, c, d, e

Answer 9

a, b, c, d, e

Question 10

An individual may become pale when exposed to cold temperatures. This is due to

vasodilation of epidermal blood vessels.

vasoconstriction of dermal blood vessels.

dehydration of the stratum corneum.

contraction of arrector pili muscles.

Answer 10

vasoconstriction of dermal blood vessels.

Question 11

Which of these comprise the nail plate?
a: Free edge
b: Nail folds
c: Eponchyium
d: Nail root
e: Nail body

a, d, e
a, b, d, e
a, b, c, e
a, c, d, e
a, b, e

Answer 11

a, d, e

Question 12

true or false: The epidermal dendritic cells are able to play an important immune response role by their phagocytic activity.

Answer 12

true

Question 13

true or false: Carotene, a pigment that contributes to skin color, is acquired in the body by eating various yellow-orange vegetables.

Answer 13

true

Question 14

true or false: The subcutaneous layer, or hypodermis, is one of the two parts of the integument.

Answer 14

false

Question 15

true or false: Nails, hair, and sweat and sebaceous glands are all derived from the epidermis.

Answer 15

true

Question 16

true or false: Fibroblasts produce collagen during wound healing.

Answer 16

true

Question 17

true or false: A mole with an irregular border is concern for possible cancer.

Answer 17

true

Question 18

The function of melanin in the skin is to

reduce water loss.
prevent infections.
help regulate body temperature.
protect against UV light.
keep the epidermis soft and pliable.

Answer 18

protect against UV light.

Question 19

The integument consists of the epidermis, which is composed of _____________, and the dermis, which is composed of ____________ connective tissue.

simple squamous epithelium; dense regular

dense irregular connective tissue; dense regular and dense irregular

simple columnar epithelium; stratified

stratified squamous epithelium; dense irregular and areolar

Answer 19

stratified squamous epithelium; dense irregular and areolar