Question 1

In a condition known as sunstroke, the patient appears flushed, the skin is warm and dry, and the body temperature rises dramatically. Explain these observations based on what is known concerning the role of the skin in thermoregulation.

Accepted Answer

The answer of In a condition known as sunstroke, the...

Question 2

Structure F on the skin diagram is a(n)

Accepted Answer

A)  oil gland. 
B)  sweat gland. 
C)  sensory receptor. 
D)  wax gland. 
E)  naked nerve ending.

Question 3

During skin repair, most of the scab consists of an insoluble network of ________, a protein that forms from blood proteins during the clotting response.

Accepted Answer

A)  keratin 
B)  dermicidin 
C)  melanin 
D)  collagen 
E)  fibrin

Question 4

In other mammals, the ________ glands function as scent glands, providing an important form of communication.

Accepted Answer

A)  eccrine 
B)  sebaceous 
C)  apocrine 
D)  mammary 
E)  merocrine

Question 5

The ________ layer of the dermis contains bundles of collagen fibers and elastin, and is responsible for the mechanical strength and flexibility of the skin.

Accepted Answer

A)  germinative 
B)  reticular 
C)  subcutaneous 
D)  papillary 
E)  corneal

Question 6

Lipid is concentrated with the cells of the

Accepted Answer

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

Question 7

Through which mechanism does perspiration function in cooling the body?

Accepted Answer

A)  conduction 
B)  evaporation 
C)  convection 
D)  radiation 
E)  diffusion

Question 8

When the arrector pili muscles contract,

Accepted Answer

A)  "goose bumps" are formed. 
B)  hairs are shed. 
C)  sweat is released from sweat glands. 
D)  shivering occurs. 
E)  the skin changes color.

Question 9

The most severe type of skin cancer is most likely to develop from

Accepted Answer

A)  nonpigmented epithelial cells. 
B)  melanocytes. 
C)  pigmented basal cells. 
D)  nonpigmented dermal cells. 
E)  keratinocytes.

Question 10

Thick skin can be found on the

Accepted Answer

A)  back. 
B)  palms. 
C)  legs. 
D)  arms. 
E)  chest.

Question 11

The glands that begin discharging a sticky, cloudy, and potentially odorous secretion at puberty are called ________ glands.

Accepted Answer

A)  ceruminous 
B)  mucous 
C)  apocrine 
D)  sebaceous 
E)  merocrine

Question 12

Why are injections administered in the hypodermis when administering drugs using a hypodermic needle?

Accepted Answer

A)  There is an abundance of capillaries in the hypodermis. 
B)  The hypodermis is highly innervated. 
C)  Since it is vascularized, the hypodermis can absorb a lot of fluid. 
D)  Both elastic fibers and collagen fibers are present. 
E)  The presence of blood vessels and lymphatic vessels help local tissues defend and repair themselves.

Question 13

A hair shaft is composed of

Accepted Answer

A)  melanin. 
B)  carotene. 
C)  starch. 
D)  lipid. 
E)  keratin.

Question 14

The protein that contributes to many of the skin's protective qualities is called

Accepted Answer

A)  melanin. 
B)  keratin. 
C)  carotene. 
D)  dermicidin. 
E)  calcitriol.

Question 15

A small amount of ultraviolet radiation is beneficial because it

Accepted Answer

A)  increases blood flow in the dermis. 
B)  stimulates the synthesis of photoreceptor pigments in the eye. 
C)  constricts blood vessels in the dermis. 
D)  stimulates vitamin D3 synthesis in the epidermis. 
E)  adjusts overall gland secretion rates in the body.

Question 16

What is the composition of the papillary layer of the dermis?

Accepted Answer

A)  dense, regular connective tissue 
B)  stratified squamous epithelium 
C)  reticular connective tissue 
D)  areolar connective tissue 
E)  dense, irregular connective tissue

Question 17

The highly vascular layer of the skin, which provides thermoregulation via changing blood flow, is the

Accepted Answer

A)  epidermis. 
B)  subcutaneous layer. 
C)  stratum basale. 
D)  stratum corneum. 
E)  dermis.

Question 18

The reticular layer's collagen fibers directly provide which function?

Accepted Answer

A)  prevent damage to the tissue 
B)  nourish the epidermis 
C)  provide flexibility 
D)  provide sensory information 
E)  increase surface area of the dermis

Question 19

Which statement is true for merocrine sweat glands?

Accepted Answer

A)  They discharge their secretions into the hair follicles. 
B)  They are for hair lubrication. 
C)  They are more numerous than apocrine sweat glands. 
D)  They are important in communication between individuals, related to sexual attraction. 
E)  They make the skin more pliable and soft.

Question 20

Many medications can be administered transdermally by applying patches that contain the medication to the surface of the skin. These patches can be attached anywhere on the skin except the palms of the hands and the soles of the feet. Why?

Accepted Answer

The answer of Many medications can be administered transdermally by...

Exam 5: The Integumentary System