Study Guide ch. 6

Question 1

Beneath the dermis lie a loose layer of skin rich in fat and areolar tissue called the:

a) dermal-epidermal junction
b) hypodermis
c) epidermis
d) none of the above

Answer 1

Hypo dermis

Question 2

The most important cells in the epidermmis are the:

a) keratinocytes
b) melanocytes
c) Langerhans Cells
d) Dermal papillae

Answer 2

Keratinocytes

Question 3

The order of the cells of the epidermis, from superficial to deep, are:

a) stratum corneum, stratum lucidum, stratum spinsum, stratum granulosum, stratum basale.
b) stratum corneum, stratum spinosum, stratum lucidum, stratum granulosum, stratum basale.
c) Stratum basale, stratum corneum, stratum lucidum, stratum spinosum, stratum granulosum
d) stratum corneum, stratum lucidum, stratum granulsum, stratum spinosum, stratum basale

Answer 3

stratum corneum, stratum lucidum, stratum granulsum, stratum spinosum, stratum basale

Question 4

In which area of the body would you expect to find an especially thick stratum?

a) back of the hand
b) thigh
c) abdomen
d) sole of the foot

Answer 4

sole of the foot

Question 5

In which layer of the skin do cells divide by mitosis to replace cells lost from the outermost surface of the body?

a) stratum basale
b) stratum corneum
c) stratum lucidum
d) stratum spinosum

Answer 5

stratum basale

Question 6

Smooth muscles that produce “goose bumps” when they contract are:

a) papillary muscles
b) hair muscles
c) follicular muscles
d) arrector pili muscles

Answer 6

arrector pili muscles

Question 7

A common type of skin cancer is:

a) malignant melanoma
b) vitiligo
c) basal cell carcinoma
d) Kaposi Sarcoma

Answer 7

Basal cell carcinoma

Question 8

Meissners corpusceles are specialized nerve endings that make it possible for skin to detect:

a) heat
b) cold
c) light touch
d) deep pressure

Answer 8

Light touch

Question 9

The basic determinant of skin color is the quantity of:

a) keratin
b) melanin
c) albinin
d) none of the above

Answer 9

melanin

Question 10

Which of the following is not contributing factor to skin color:

a) exposure to sunlight
b) genetics
c) place of birth
d) volume of blood in skin caillaries

Answer 10

place of birth

Question 11

True or False

Most of the body is covered by thich skin

Answer 11

false

Question 12

True or False

A surgeon would most likely prefer to make an incision parallel to langer cleavage lines

Answer 12

True

Question 13

True or False

If the enzyme tyrosianse is absent from birth because of a congenital defect, a condition called albinism results

Answer 13

True

Question 14

True or False

Both benign moles and melignant melanomas are outlined by a distinct bordor

Answer 14

false

Question 15

Subcutaneous layer and hypodermis are synonymous terms

Answer 15

True

Question 16

Which of the following is NOT a function of the skin:

a) sensation
b) excertion
c) immunity
d) all of the above are skin functions

Answer 16

all the above are skin functions

Question 17

Which of the following vitamins is syntesized by the skin:

a) vitamin A
b) vitamin B
c) vitamin C
d) vitamin D

Answer 17

Vitamin D

Question 18

Which of the following is NOT a mechanism of heat loss by the skin?

a) evaporation
b) radiation
c) vascoconstiction
d) convection

Answer 18

vascoconstiction

Question 19

Langerhans cells are the mechanism of action of which function of skin?

a) immunity
b) endocrine
c) excretion
d) sensation

Answer 19

immunity

Question 20

Which structure compares actual body temperature with set point temperature and then sends out appropriate correction signals to effectors

a) pituitary
b) hypothalamus
c) thalamus
d) none of the above

Answer 20

Hyporthalamus

Question 21

True or False

Skin is a minor factor in the bodys thermoregulatory mechanism

Answer 21

false

Question 22

True or False

Skin plays a major role is the overall excretion of body wastes

Answer 22

False

Question 23

To help dissipate heat during exercise, sweat production can reach as much as 3 liters per hour

Answer 23

True

Question 24

The developing fetus is covered by ab extremely fine, soft hair coat called:

a) vellus
b) lanugo
c) fatalis follicle
d) none of the above

Answer 24

Lanugo

Question 25

Which of the following is associated with hair? a) sebaceous glands b) ceruminous glands c) eccrine glands d) none of the above

Answer 25

sebaceous glands

Question 26

Ceruminous glands are found in the a) axillae b) soles of feet c) ear canal d) none of the above

Answer 26

ear canal

Question 27

The most numerous, important, and wide spread sweat glands in the body are: a) apocrine b) eccrine c) ceruminous d) sebaceous

Answer 27

eccrine

Question 28

Hair growth is stimulated by: a) cutting it frequently b) shaving c) increasing melanin production d) none of the above

Answer 28

none of the above

Question 29

True of False | The hair follicle is an extension of the epidermis into the dermis forming a small tube

Answer 29

True

Question 30

True of False | the inner core of the hair is called the cortex

Answer 30

False

Question 31

True of False | Sweat, or sudoriferous, glands are the most numerous of the skin glands

Answer 31

True

Question 32

One of the factors associated with male pattern baldness is androgens

Answer 32

True

Question 33

Growth of nails is due to mitosis in the stratum basale

Answer 33

True

Question 34

_____________ is the term associated with an unusally high body temperature

Answer 34

Fever or Febrile

Question 35

____________ ____________ occurs when the body loses a large amount of fluid resulting from heat-loss mechanisms

Answer 35

Heat exhaustion

Question 36

__________________ _____________ is also known as sunstroke

Answer 36

Heat stroke

Question 37

Local damage caused by extremely low temperatures is referred to as___________-

Answer 37

Frostbite

Question 38

The "rule of plams" assumes that the palm size of a burn victim equals about__ of total body surface area a) 1% b) 2% c) 5% d) none of the above

Answer 38

1%

Question 39

Blisters, severe pain, and generalized swelling are charecteristic of which typer of burn? a) first-degree burns b) second-degree burns c) Third-degree burns d) none of the above

Answer 39

second-degree burns

Question 40

True or False | According to the "rule of nines" the body is divided into nine areas of 9%

Answer 40

False

Question 41

Immediately after injury, thrid-degree burns hurt less than second-degree burns

Answer 41

True

Question 42

Destroys both epidermis and dermis and mat involve underlying tissue

Answer 42

Third-degree burn

Question 43

Involves only the epidermis

Answer 43

First-degree burns

Question 44

Another names for first-and second-degree burns

Answer 44

Partial-thickness burn

Question 45

Damge to epidermis and upper layers of dermis with blisters

Answer 45

Second-degree burn

Question 46

another name for thrid-degree burn

Answer 46

full-thickness burn

Question 47

Which of the following statements about hair follicels is true? a) Arrector pili muscles are assosated with them b) sudoriferous glands empty into them c) they arise directly from the epidermal layer of skin d) all of the above are true

Answer 47

Arrector pili muscles are assosated with them

Question 48

Which of the following statements about apocrine glands is true a) they can be classified as sudoriferous b) they can be found primarily in armpit and genital regions c) They secrete a thick substance that has a strong odor d) All of the above are true

Answer 48

all the above are true

Question 49

Which of the following, if any, is NOT found in the epidermal layer of the skin a) nerves b) melanin c) blood vessels d) all of the above are found in the dermis

Answer 49

melanin

Question 50

What characterizes second-degree burns a) blisters b) swelling c) severe pain d) all of the above

Answer 50

blisters

Question 51

Blackheads can result from the blockage of which of the following glands a) lacrinla b) sebaceous c) ceruminous d) subdoriferous

Answer 51

sebaceous

Question 52

Keratin is found in which layer of the skin a) dermis b) epidermis c) subcutaneous d) serous

Answer 52

Epidermis

Question 53

what is the fold of skin that hides the root of a nail called a) lunula b) body c) cuticule d) papillae

Answer 53

cuticule

Question 54

Which of the follwing is NOT and important function of the skin a) sense of organ activity b) absorption c) protection d) temerpature

Answer 54

absorption

Question 55

Another name for the dermis is: a) corium b) strata c) subcutaneous d) lunula

Answer 55

corium

Question 56

The shedding of epithelial elements from the skin surface is called: a) desquamation b) convection c) cleavage lines d) turnover

Answer 56

desquamation