Study Guide ch. 6 Flashcards
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
Hypo dermis
The most important cells in the epidermmis are the:
a) keratinocytes
b) melanocytes
c) Langerhans Cells
d) Dermal papillae
Keratinocytes
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
stratum corneum, stratum lucidum, stratum granulsum, stratum spinosum, stratum basale
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
sole of the foot
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
stratum basale
Smooth muscles that produce “goose bumps” when they contract are:
a) papillary muscles
b) hair muscles
c) follicular muscles
d) arrector pili muscles
arrector pili muscles
A common type of skin cancer is:
a) malignant melanoma
b) vitiligo
c) basal cell carcinoma
d) Kaposi Sarcoma
Basal cell carcinoma
Meissners corpusceles are specialized nerve endings that make it possible for skin to detect:
a) heat
b) cold
c) light touch
d) deep pressure
Light touch
The basic determinant of skin color is the quantity of:
a) keratin
b) melanin
c) albinin
d) none of the above
melanin
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
place of birth
True or False
Most of the body is covered by thich skin
false
True or False
A surgeon would most likely prefer to make an incision parallel to langer cleavage lines
True
True or False
If the enzyme tyrosianse is absent from birth because of a congenital defect, a condition called albinism results
True
True or False
Both benign moles and melignant melanomas are outlined by a distinct bordor
false
Subcutaneous layer and hypodermis are synonymous terms
True
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
all the above are skin functions
Which of the following vitamins is syntesized by the skin:
a) vitamin A
b) vitamin B
c) vitamin C
d) vitamin D
Vitamin D
Which of the following is NOT a mechanism of heat loss by the skin?
a) evaporation
b) radiation
c) vascoconstiction
d) convection
vascoconstiction
Langerhans cells are the mechanism of action of which function of skin?
a) immunity
b) endocrine
c) excretion
d) sensation
immunity
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
Hyporthalamus
True or False
Skin is a minor factor in the bodys thermoregulatory mechanism
false
True or False
Skin plays a major role is the overall excretion of body wastes
False
To help dissipate heat during exercise, sweat production can reach as much as 3 liters per hour
True
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
Lanugo
Which of the following is associated with hair?
a) sebaceous glands
b) ceruminous glands
c) eccrine glands
d) none of the above
sebaceous glands
Ceruminous glands are found in the
a) axillae
b) soles of feet
c) ear canal
d) none of the above
ear canal
The most numerous, important, and wide spread sweat glands in the body are:
a) apocrine
b) eccrine
c) ceruminous
d) sebaceous
eccrine
Hair growth is stimulated by:
a) cutting it frequently
b) shaving
c) increasing melanin production
d) none of the above
none of the above
True of False
The hair follicle is an extension of the epidermis into the dermis forming a small tube
True
True of False
the inner core of the hair is called the cortex
False
True of False
Sweat, or sudoriferous, glands are the most numerous of the skin glands
True
One of the factors associated with male pattern baldness is androgens
True
Growth of nails is due to mitosis in the stratum basale
True
_____________ is the term associated with an unusally high body temperature
Fever or Febrile
____________ ____________ occurs when the body loses a large amount of fluid resulting from heat-loss mechanisms
Heat exhaustion
__________________ _____________ is also known as sunstroke
Heat stroke
Local damage caused by extremely low temperatures is referred to as___________-
Frostbite
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
1%
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
second-degree burns
True or False
According to the “rule of nines” the body is divided into nine areas of 9%
False
Immediately after injury, thrid-degree burns hurt less than second-degree burns
True
Destroys both epidermis and dermis and mat involve underlying tissue
Third-degree burn
Involves only the epidermis
First-degree burns
Another names for first-and second-degree burns
Partial-thickness burn
Damge to epidermis and upper layers of dermis with blisters
Second-degree burn
another name for thrid-degree burn
full-thickness burn
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
Arrector pili muscles are assosated with them
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
all the above are true
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
melanin
What characterizes second-degree burns
a) blisters
b) swelling
c) severe pain
d) all of the above
blisters
Blackheads can result from the blockage of which of the following glands
a) lacrinla
b) sebaceous
c) ceruminous
d) subdoriferous
sebaceous
Keratin is found in which layer of the skin
a) dermis
b) epidermis
c) subcutaneous
d) serous
Epidermis
what is the fold of skin that hides the root of a nail called
a) lunula
b) body
c) cuticule
d) papillae
cuticule
Which of the follwing is NOT and important function of the skin
a) sense of organ activity
b) absorption
c) protection
d) temerpature
absorption
Another name for the dermis is:
a) corium
b) strata
c) subcutaneous
d) lunula
corium
The shedding of epithelial elements from the skin surface is called:
a) desquamation
b) convection
c) cleavage lines
d) turnover
desquamation
