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Chapter 6 A&P

Terms in this set (52)

hypodermis
Which of the following is NOT part of the skin?

epidermis
papillary layer
hypodermis
stratum basale
dermis
fibroblasts
Which of the following is NOT epidermis

melanocytes
fibroblasts
stem cells
keratinocytes
tactile cells
fingertips
Skin covering the __________ has sweat glands but no hair follicles or sebaceous glands.

forearm
buttocks
abdomen
fingertips
back
1 to 2
Most of the skin is ___________ mm thick

0.01 to 0.02
0.1 to 0.2
1 to 2
10 to 20
100 to 200
hypodermis
In which of the following skin layers would a subcutaneous injection be administered?

stratum basale
stratum spinosum
stratum carneum
dermis
hypodermis
epidermis
Which of the skin layers below is the most superficial

basal lamina
epidermis
papillary layer
reticular layer
hypodermis
collagen and fibroblasts
Which of the following best describes the composition of the dermis

collagen and living keratinocytes
collagen and dead keratinocytes
collagen and fibroblasts
elastic fibers and melanocytes
elastic fibers and dendritic cells
stratified squamous epithelium
What type of tissue is found in the most superficial layer of skin

simple squamous epithelium
stratified squamous epithelium
dense irregular connective tissue
areolar connective tissue
dense regular connective tissue
fifth
Looking at a slide of thin skin under the microscope, you note that the stratum baslae is the ____ layer of the epidermis in from the surface

second
third
first
fifth
fourth
melanocyte
Which of the following cells is largely responsible for skin color

dendritic cells
keratinocyte
melanocyte
merkel cell
dead keratinocyte
stratum corneum
Which layer of the epidermis consists of up to 30 layers of dead cells

stratum basale
stratum spinosum
stratum granulosum
stratum lucidum
stratum corneum
tactile (Merkel) cells
Which of the following are associated with the sense of touch?

fibroblasts
melanocytes
keratinocytes
dendritic (langerhans) cells
tactile (merkel) cells
stratum basale
The fastest rate of mitosis happens in the

stratum basale
stratum spinosum
stratum granulosum
stratum lucidum
stratum corneum
dendritic (Langerhans) cells
Which of the following cells stand guard against toxins, microbes and other pathogens.

keratinocytes
melanocytes
adipocytes
dendritic (langerhans) cells
tactile (merkel) cells
dermal papillae
Fingerprints left on things we touch are associated with

dermal papillae
dermal connective tissue
stratum basale
subcutaneous tissue
subcutaneous adipose
keratinocytes
Calluses or corns are the result of accelerated multiplication by

melanocytes
keratinocytes
fibroblasts
tactile cells
red blood cells
stratum lucidum
The ___ is absent from most epidermis

stratum basale
stratum spinosum
stratum granulosum
stratum lucidum
stratum corneum
reticular
Leather is mostly made of the __________ layer of the dermis

areolar
keratin
reticular
collagen
papillary
adipose tissue
The hypodermis is characterized by an abundance of which tissue

stratified squamous epithelium
smooth muscle
nervous tissue
adipose tissue
dense irregular connective tissue
hematoma
The skin discoloration most likely to suggest physical abuse is

pallor
albinism
erythema
hematoma
jaundice
hemoglobin
The reddish color of the skin of the lips is primarily due to the presence of which pigment

hemoglobin
myoglobin
melanin
carotene
keratin
pallor
Which skin color is most likely to result from anemia

pallor
erythema
hematoma
albinism
jaundice
jaundice
Increased bilirubin levels cause a skin discoloration called

erythema
jaundice
pallor
bronzing
cyanosis
the quantity of melanin produced
Ethnic differences in skin color are primarily caused by differences in

UV radiation exposure
the quantity of hemoglobin carried in the blood
the quantity of melanin produced
the number of melanocytes
the number of keratinocytes
mole
A ___ is an elevated patch of melanized skin.

hemangioma
mole
freckle
flexion line
friction ridge
hair
A pilus is a

hair
hair follicle
tiny muscle that moves a hair
sensory nerve fiber around the base of a hair
gland associated with a hair follicle
lanugo
What type of hair is present only prenatally and usually replaced by birth.

lunule
peach fuzz
terminal hair
vellus
lanugo
dermal papilla
Blood vessels in the ________provides a hair with its sole source of nutrition

bulb
root
shaft
dermal papilla
medulla
hair bulb
The base where a hair follicle originates in the skin is known as the

hair bulb
hair root
shaft
medulla
cuticle
hairs to stand on end with no apparent function.
The contraction of the piloerector muscles (pilomotor muscle or
arrector pili) in humans causes

hairs to stand on end, trapping an insulating layer of warm air next to the skin
generation of heat to raise the body temperature
hairs to stand on end to make the individual appear bigger
hairs to stand on end with no apparent function
increased ability to feel pain
anagen, catagen, and telogen.
A hair cycle consists of three developmental stages in which order

anagen, telogen, and catagen
anagen, catagen, and telogen
catagen, anagen, and telogen
catagen, telogen, and anagen
telogen, anagen, and catagen
hair follicle
Each hair grows in an oblique epithelial tube called a(an)

hair follicle
vellum
pilus
bulb
shaft
hirsutism
Excessive hairiness is called

telegenism
anagenism
catagenism
alopecia
hirsutism
eponychium
The narrow zone of dead skin overhanging the proximal end of a nail is called

eponychium
lunule
nail plate
nail body
nail root
lunule
What is the white opaque "moon" often found at the proximal end of a fingernail called?

free edge
nail body
eponychium
lunulenail root
eumelanin and pheomelanin.
Variations in hair color arise from the relative amounts of

collagen and elastic filaments
keratin and melanin
carotene and hemoglobin
carotene and collagen
eumelanin and pheomelanin
nail matrix
Mitosis in the __________ accounts for growth of the nail.

nail plate
nail fold
eponychium
hyponychium
nail matrix
sebaceous
The oil of your scalp is secreted by __________ glands associated with the hair follicles.

merocrine sweat
apocrine sweat
sebaceous
ceruminous
eccrine sweat
merocrine sweat
Secretions from __________ glands contribute the acid mantle that inhibits bacterial growth on the skin.

mammary
ceruminous
sebaceous
apocrine sweat
merocrine sweat
cerumen
____________ is/are formed partly from the secretions of glands in the external ear canal.

sebum
cerumen
sweat
scents
mucus
apocrine
Looking at a slide of axillary skin under the microscope, you notice the presence of _______ glands that are absent on slides of the scalp

merocrine
apocrine
sebaceous
ceruminous
perspiration
merocrine glands
Which cutaneous glands are concerned with cooling the body

ceruminous glands
sebaceous glands
merocrine glands
apocrine glands
exothermic glands
apocrine
The ___ are a source of sex pheromones

ceruminous
merocrine
mammary
sebaceous
apocrine
apocrine
Mammary glands are modified ___________ glands that develop within the female breast

merocrine
apocrine
ceruminous
sebaceous
eccrine
stratum spinosum and stratum basale
Which two strata of the epidermis are most susceptible to cancer?

stratum corneum and stratum lucidum
stratum basale and stratum corneum
stratum spinosum and stratum basale
stratum granulosum and stratum spinosum
stratum lucidum and stratum granulosum
asymmetry, border irregularity, color, and diameter
The "ABCD rule" for recognizing early signs of malignant melanoma refers to the following characteristics of the lesion

asymmetry, border irregularity, color, and diameter
asymmetry, brightness, color, and diameter
aspect, brightness, color, and distance
aspect, border irregularity, color, and distance
area, border irregularity, color, and density
melanoma
The least common but most deadly type of skin cancer is

basal cell carcinoma
squamous cell carcinoma
melanoma
skin lymphoma
skin sarcoma
basale
Basal cell carcinoma initially affects cells of the stratum __________

spinosum
germinativum
corneum
basale
lucidum
third-degree
_____________ burns involve the epidermis, all of the dermis, and often some deeper tissue.

first-degree
second-degree
third-degree
partial-thickness
malignant
fluid loss
The most immediate threat to the life of a patient with severe burns is

fluid loss
eschar
heat loss
pain
infection
metals such as mercury
The skin is a barrier to all of the following EXCEPT

metals such as mercury
infectious organisms
water
UV rays
in lactating females
In whom are mammary glands found

in lactation females
in lactating and non-lactating females
in non-lactating females
in non-lactating females and males
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