Question 1

Epidermal cells synthesize this vitamin when exposed to sunlight.

Accepted Answer

A)  vitamin D2
B)  vitamin C
C)  vitamin E
D)  vitamin D3
E)  vitamin A D

Question 2

When a person becomes "pale," what is the physiologic basis?

Accepted Answer

A)  The blood supply to the skin increases.
B)  The number of red melanocytes in the skin increases.
C)  Melanocytes increase production of red pigments.
D)  The blood supply to the skin decreases.
E)  Increased heat causes the skin to turn red. D

Question 3

Nerve fibers in the dermis most likely function in

Accepted Answer

A)  defending of local tissues after infection.
B)  providing nutrients and oxygen to the skin.
C)  monitoring sensory receptors in the dermis.
D)  repairing tissue after injury.
E)  removing carbon dioxide and waste products. C

Question 4

-Structure G

Accepted Answer

A)  releases milk.
B)  releases oil.
C)  releases sweat.
D)  is a sensory receptor.
E)  releases mucus.

Question 5

The part of the skin at the bottom of the picture,seen in a lighter shade of gray,is the

Accepted Answer

A)  strata.
B)  carotene.
C)  dermis.
D)  cornified region.
E)  hypodermis.

Question 6

Which of the following is the function of hair associated with a nerve fiber?

Accepted Answer

A)  provides an early-warning system that may help prevent injury
B)  helps cushion a light blow to the head
C)  protects the scalp from UV light
D)  helps prevent the entry of foreign particles
E)  provides protection for the surface of the eye

Question 7

The lipid in oil glands is released through which type of secretion?

Accepted Answer

A)  eccrine
B)  apocrine
C)  merocrine
D)  endocrine
E)  holocrine

Question 8

The subcutaneous layer consists of

Accepted Answer

A)  epithelial and adipose tissues.
B)  areolar and adipose tissues.
C)  dense connective and loose connective tissues.
D)  epithelium and loose connective tissues.
E)  skeletal muscles and adipose tissue.

Question 9

-The lowest level of cells of the strata,marked E,consists of

Accepted Answer

A)  keratin protein.
B)  collagen fibers.
C)  dead cells.
D)  carotene-producing cells.
E)  mitotically active epithelial cells.

Question 10

You fell on the concrete walkway and scraped your leg against the solid surface,which created a two-inch by three-inch area that is not bleeding.This would be called a(n)

Accepted Answer

A)  abrasion.
B)  laceration.
C)  puncture.
D)  incision.
E)  contusion.

Question 11

You have been severely burned on the right arm in a house fire,but you are now recovering.The second- and third-degree burns have destroyed the epidermis and dermis of your arm.Predict the long-term consequences of this burn.

Accepted Answer

A)  death at an early age
B)  inability to control body temperature
C)  no skin at all will replace the burned area
D)  no growth of hair in the damaged skin area
E)  inability to use the arm in any way

Question 12

Functions of the skin include

Accepted Answer

A)  regulating body temperature.
B)  synthesizing antibodies.
C)  producing adipose tissue.
D)  synthesizing digestive enzymes.
E)  release of large amounts of hormones.

Question 13

Two patients are brought to the emergency room.One has cut his finger with a knife; the other has stepped on a nail.Which wound has a greater chance of becoming infected? Why?

Accepted Answer

The answer of Two patients are brought to the emergency...

Question 14

Mammary glands are modified

Accepted Answer

A)  sensory receptors.
B)  wax glands.
C)  oil glands.
D)  sebaceous glands.
E)  sweat glands.

Question 15

Modified and specialized sweat glands that produce milk are called ________ glands.

Accepted Answer

A)  ceruminous
B)  apocrine sweat
C)  sebaceous
D)  merocrine sweat
E)  mammary

Question 16

The epidermal layer whose cells have stopped dividing and started to produce large amounts of keratin is the

Accepted Answer

A)  stratum corneum.
B)  stratum lucidum.
C)  stratum basale.
D)  stratum granulosum.
E)  stratum spinosum.

Question 17

Lipid is concentrated with the cells of the

Accepted Answer

A)  hypodermis.
B)  dermis.
C)  cornified region.
D)  stratum granulosum.
E)  stratum spinosum.

Question 18

As cells are pushed from the deeper portion of the epidermis toward the surface,

Accepted Answer

A)  they divide.
B)  they die.
C)  their nutrient supply increases.
D)  they enter the dermis.
E)  they produce daughter cells.

Question 19

Which layer is the stratum granulosum?

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  E

Question 20

When the body is overheated,the skin responds by

Accepted Answer

A)  decreasing melanin production.
B)  losing oxygen to surrounding tissues.
C)  constricting blood vessels.
D)  dilating blood vessels.
E)  increasing keratin production.

Exam 5: The Integumentary System