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33 questions
An organ consists of...
one variety of each of the four tissue types
at least four tissues grouped together that function together
two or more tissues grouped together that function together
skin and bones
The human integumentary system includes...
skin, nails, hair follicles, and sweat glands.
bones and muscles
only one type of tissue
the epidermis, dermis, and subcutaneous layer
As cells are pushed from the deeper portion of the epidermis toward the surface,
they divide continually
their supply of nutrients improves
they die
they become dermal cells
Which of the following is NOT correct concerning the skin
The dermis contains smooth muscle and nervous tissue
The dermis is usually thicker than the epidermis
The epidermis is composed of stratified squamous epithelium
The subcutaneous later is between the dermis and the epidermis
The skin appears yellowish if a person eats too much...
collagen
melanin
cyanin
carotene
Exposure to ultraviolet light darkens skin by stimulating synthesis of...
melanin
cyanin
hemoglobin
carotene
The layer of the epidermis that includes melanocytes and a single row of columnar cells that undergo mitosis is the...
stratum corneum
stratum granulosum
stratum spinosum
stratum basale
What determines the color of the skin?
The number of melanocytes in the epidermis
The amount of melanin that melanocytes produce
The density of hair
The thickness of the epidermis
The subcutaneous layer consists of
epithelial tissue
areolar and adipose tissue
epithelial tissue and areolar tissue
adipose tissue and skeletal muscle tissue
Skin cells play an important role in producing vitamin...
A
B
C
D
The functions of skin include...
regulating body temperatures
housing sensory receptors
acting as a protective covering
all of the above
A nail consists of...
a nail bed and nail plate
bone
dense connective tissue
collagen and elastin
The nail plate is produced by...
melanocytes
fibroblasts
specialized epithelial cells
bone cells
The hardness of a nail comes from...
calcium
collagen
keratin
carotene
Shafts of hair are composed of
living dermal cells
dead epidermal cells
dead dermal cells
living epidermal cells
The arrector pili muscle is attached to...
the hypodermis
the nail bed
a sebaceous gland
a hair follicle
Sebaceous glands secrete
sweat in the armpits
fat globules that much with cellular debris, forming sebum
mucus
hormones
Merocrine (eccrine) sweat glands
usually are associated with hair follicles
respond primarily to elevated body temperature
respond primarily to emotional stress
usually are associated with hair follicles
Apocrine sweat glands are most abundant on or in the...
axilla
palms of the hands
forehead
neck
Milk and ear wax
are in the blood
are secreted from modified sweat glands
are secreted from modified sebaceous glands
are not secretions
Body heat is lost primarily by...
conduction
convection
evaporation
radiation
Which if the following is a normal response to excessive loss of body heat in a cold environment?
Dermal blood vessels constrict
Smooth muscles relax
Sweat glands become active
Dermal blood vessels dilate
Sweat cools the body by...
convection
conduction
radiation
evaporation
A warm surface loses heat to the air molecules continuously circulating over it by...
convection
evaporation
radiation
conduction
Hypothermia is...
a lowered body temperature
associated with exercising vigorously in the heat
a form of hair loss
accommodated by fever
Individuals at elevated risk for hypothermia include...
the very old and the very young
homeless people exposed to the outdoors
very thin people
all of the answers choices are correct
Inflammation makes skin
cool and clammy
secrete abundant antibodies
red, swollen and painful to touch
peel off
Inflammation
is a type of infection
is an abnormal response to injury or stress
is a normal response to stress or injury
is a result or exposure to very low temperatures
Which of the following happens first after a scab forms?
the scrap sloughs off
phagocytosis cells remove dead material
blood vessels send out new branches under the scab
fibroblasts from the wound edge form new collagenous fibers
A burn affecting only the epidermis is a
deep partial-thickness burn
third-degree burn
second-degree burn
superficial partial-thickness burn
An autograft covers an injured area of skin with
skin from an uninjured region of the patient’s body
skin from a skin bank
a skin substitute, such as an artificial membrane
skin from a person other then the patient
In treating a burn patient, the “rule of nines” is used to estimate the
depth of the burn
surface area of the burn
degree and source of the burn
type of scar that will form
The skin wrinkles with age because...
fat is lost from the subcutaneous layer and the dermis shrinks
epidermal calls undergo a burst of cell division
the number of sweat glands diminishes
collagen degrades in the subcutaneous layer as the epidermis shrinks
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