Anatomy Ch.5 Test#1

25 July 2022
4.7 (114 reviews)
164 test answers

Unlock all answers in this set

Unlock answers (160)
question
For safety, many times before surgery the hospital staff and anesthesiologist or anesthetist request that a patient_____________.
answer
remove fingernail and toenail polish
question
The patient least likely to develop a bedsore would be which of the following?
answer
10-year-old who has strep throat and a fever of 102 degrees.
question
The immediate threat to life from serious burns is __________.
answer
dehydration
question
The proximal nail fold projects onto the nail body as the __________.
answer
cuticle
question
Thick skin __________.
answer
has a thicker stratum granulosum and stratum corneum than thin skin contains an additional layer (stratum)
question
The plexus of blood vessels that nourishes the deeper dermis and the hypodermis is the __________ plexus.
answer
cutaneous
question
What is the fate of melanin above the stratum basale in dark-skinned people
answer
It occupies keratinocytes throughout the epidermis
question
What is the average length of the active phase of a hair follicle in the scalp?
answer
approximately 4 years
question
If hair is round in cross section that indicates that the hair is __________.
answer
straight
question
Melanoma is recognized clinically by the __________ rule
answer
ABCD
question
Most aspects of skin aging are caused by "photoaging." Characteristics of photoaged skin include __________.
answer
liver spots and decreased amount of collagen in the dermis
question
Modified sweat glands in the breasts are __________ glands.
answer
mammary
question
Which primary layer of the skin contains melanocytes?
answer
epidermis
question
Which layer of the integument contains the stratum basale?
answer
epidermis
question
Which tissue layer deep to the integument acts as a shock and thermal insulator?
answer
hypodermis
question
Which primary layer of the skin provides a pink undertone to Caucasian skin?
answer
dermis
question
When doctors make incisions on the body based on the lines of cleavage of the skin, these cleavage lines are based on the arrangement of collagen fibers in which layer of the skin?
answer
dermis
question
Diffusion of chemicals from a transdermal patch must reach what layer of the skin to be effective?
answer
dermis
question
Which primary layer of the skin contains lamellated granules that aid in waterproofing?
answer
epidermis
question
Identify the layer of the skin that contains most of the sensory receptors.
answer
dermis
question
Following their production in red bone marrow, dendritic cells circulate to what primary layer of the skin?
answer
epidermis
question
Visible stretch marks on the skin surface are actually the result of microscopic tears in collagen fibers in which layer?
answer
dermis
question
When a blister forms due to friction, liquid pools between the epidermis and what other layer of the integument?
answer
dermis
question
If you were to have liposuction, you would have tissue removed from which layer?
answer
hypodermis
question
Which layer of the integument is found deep to the dermis?
answer
hypodermis
question
The cells in the skin that store the most melanin granules are
answer
basal keratinocytes.
question
Light-skinned people have less melanin in the superficial layers of their epidermis because
answer
keratinocytes in their deeper layers rapidly digest melanin
question
Which layer of the epidermis contains keratohyalin granules and lamellated granules
answer
stratum granulosum
question
The reticular layer of the dermis consists of ________ connective tissue
answer
dense irregular
question
In the thick skin of the palm, the layer of the epidermis directly deep to the stratum corneum is the stratum ________.
answer
lucidum
question
Lamellated granules
answer
contain glycolipids that are secreted from cells in the stratum granulosum.
question
The thickness of skin is determined by the presence of the stratum lucidum and the thickness of the
answer
stratum corneum.
question
The subpapillary plexus
answer
nourishes the dermal papillae and epidermis.
question
The color of red or blonde hair is due to
answer
a different type of melanin.
question
The most external layer of a hair shaft is the
answer
cuticle
question
Pimples begin
answer
when sebaceous glands become blocked by sebum
question
Tattoos are permanent because
answer
the pigments are injected in the dermis.
question
In the ABCD rule of skin cancer, the letter B stands for
answer
border
question
Which of the following is a sensory receptor?
answer
Pacinian corpuscle
question
Which of the following is not a current hypothesis proposed for the evolution of skin color
answer
preventing damage to elastin protecting the level of vitamin D protecting the level of folic acid preventing damage to DNA preventing damage to elastin
question
A(n) ________ responds to the movement of a single hair.
answer
root hair plexus
question
The only cell type found superficial to the stratum spinosum in the epidermis is the
answer
keratinocyte.
question
In the ABCD rule for recognizing melanoma, the letter D stands for
answer
diameter
question
Damage to the hair ________ would prevent hair growth.
answer
matrix
question
Skin consists of two distinct tissue layers:
answer
the epidermis and dermis.
question
Keratinocytes begin to die in the stratum granulosum
answer
False
question
Consumer goods made of leather are produced from the subcutaneous adipose layer of animals.
answer
False
question
Which layer of the integument are toenails and fingernails derived from?
answer
epidermis
question
Which layer of the skin invaginates downward to form sebum-producing glands?
answer
epidermis
question
Is the human integumentary system best adapted for hot or cold climates?
answer
warm, because sweating cools us in hot climates but we would die in cold climates without clothing
question
The type of sweat gland that begins to function at puberty and is involved in sexual signaling is
answer
apocrine
question
The proximal nail fold is also called the nail's
answer
eponychium
question
The lunule, which represents the thickest part of the nail matrix is found at the
answer
proximal part of the nail bed
question
The coarse hairs in the skin of the perineum and axillary regions are all ________ hairs.
answer
terminal
question
Which is the most abundant and widespread type of sweat gland?
answer
eccrine
question
Since both hair and skin contain keratin, the hair shaft is most comparable to what part of the epidermis?
answer
stratum corneum
question
The black part of a blackhead is
answer
oxidized sebum.
question
The "cheesy" layer on the skin of a newborn is
answer
vernix caseosa.
question
Lanugo hair is replaced in a fetus by
answer
vellus hair.
question
Soft keratin is present in the
answer
epidermis.
question
white half-moon visible under the proximal part of a fingernail is the
answer
lunule
question
Cleavage lines
answer
run parallel to the orientation of collage bundles in the reticular layer.
question
sebaceous gland is classified as a ________ gland.
answer
simple alveolar
question
The epidermis is a keratinized ________ epithelium.
answer
stratified squamous
question
Goose bumps" on the skin are due to action of the
answer
arrector pili muscles.
question
Which statement is not part of the explanation for male pattern baldness?
answer
Cells of the hair matrix cease mitosis.
question
Holocrine secretion
answer
involves the bursting of the glandular epithelial cell.
question
type of skin cancer that arises from keratinocytes of the stratum spinosum is
answer
squamous cell carcinoma.
question
A partial-thickness burn involves
answer
the epidermis and papillary layer of the dermis
question
As a person balds, terminal hair is replaced by
answer
vellus
question
Chemotherapy causes hair loss because these drugs specifically target rapidly dividing cells in the hypodermis.
answer
False
question
Nutrients enter a hair follicle through the
answer
dermal papilla.
question
If you are truly "smelly" after a workout that causes you to work up a sweat, the smell is due to secretions from your eccrine glands.
answer
False
question
Sebaceous glands secrete oil onto the surface of the epidermis via the
answer
hair follicle
question
The contraction of skeletal muscle cells of the arrector pili muscles, attached to hair follicles, causes "goose bumps."
answer
False
question
Ceruminous glands of the ear canal are modified sebaceous glands.
answer
False
question
on the rule of nines, approximately what percent of the total body surface covers the anterior and posterior torso?
answer
37%
question
The type of burn in which the epidermis and part of the dermis are damaged is ________ degree.
answer
second
question
Any condition involving absence or loss of hair is called
answer
alopecia
question
Which connective tissue layer is discussed in the chapter on the integumentary system but is truly not a part of it?
answer
hypodermis
question
The integumentary organs that are derived from mesoderm and function in thermoregulation are
answer
arrector pili muscles.
question
The letter A in the ABCD rule for melanoma detection stands for
answer
asymmetry.
question
Skin cancers are the most common types of cancer in the United States, and the most important risk factor is overexposure to ultraviolet radiation.
answer
true
question
An immediate concern with a burn patient is loss of fluids, so fluids must be administered immediately.
answer
true
question
First-degree burns are the most severe type of burn.
answer
False
question
An appendage or layer of the skin that does not develop from ectoderm is the
answer
dermis
question
The type of skin cancer that is most common and has the lowest metastasis rate is
answer
basal cell carcinoma.
question
Since apocrine glands are almost inactive until puberty, they may function primarily in
answer
sexual signalling, under the influence of androgens
question
Excessive exposure to ultraviolet radiation (UVR) can lead to skin cancer, but minimal UVR exposure can lead to
answer
vitamin D deficiency
question
What is true of all epidermal cell layers superficial to the stratum granulosum?
answer
They are dead.
question
In what way is thin skin different from thick skin?
answer
Thick skin contains an additional layer (stratum).
question
Thick skin contains an additional layer (stratum).
answer
3.5-4.5 days
question
What is the importance of vitamin D synthesis in the epidermis?
answer
Vitamin D is required for the uptake of calcium from the diet, and thus is important to healthy bones.
question
The separation of the epidermis from the dermis by a fluid-filled pocket due to short-term friction is a __________.
answer
blister
question
The body hairs of women and children, as well as hairs on the heads of nearly bald men, are __________ hairs.
answer
vellus
question
The plexus of blood vessels that nourishes the superficial dermis and the epidermis is the __________ plexus.
answer
subpapillary
question
Which of the following statements are false concerning skin pigmentation? (Choose all that apply.)
answer
Dark-skinned individuals have more melanocytes in their epidermis. Carotene causes the yellowish tinge to the skin of Asian people.
question
If hair is oval in cross-section that indicates that the hair is __________.
answer
wavy
question
Eccrine sweat glands are coiled versions of what type of exocrine gland?
answer
simple tubular
question
In a vellus hair (or a fine hair), which of the three concentric layers is missing? __________
answer
medulla
question
Silvery white scars resulting from extreme obesity or pregnancy are a result of tearing of the collagen in the dermis and are called __________.
answer
stretch marks
question
__________ ridges increase friction and the gripping ability of the hands and feet.
answer
epidermal ridges
question
Both sebaceous glands and apocrine sweat glands begin functioning at puberty under the influence of __________.
answer
hormones
question
The ABCD or ABCD (E) rule is used for recognizing __________.
answer
melanoma
question
Apocrine sweat gland
answer
Produces viscous, proteinaceous, and sometimes milky sweat that takes on a musky smell; found in axillary and pubic regions
question
sebaceous gland
answer
F. undergoes process called holocrine secretion
question
eccrine sweat gland
answer
B. most numerous type of sweat gland; secretes "true sweat."
question
root hair plexus
answer
A. knot of sensory nerve endings wrapped around a hair bulb
question
cuticle
answer
D. single layer of flattened, overlapping cells; prevents hair from matting
question
lunula
answer
C. region of thickened nail matrix
question
Which type of cell is found in all layers of the epidermis?
answer
keratinocytes
question
The stratum corneum __________.
answer
provides protection and water resistance to the skin
question
Melanocytes __________.
answer
respond to UV radiation by increasing production of melanin
question
What is the "Rule of Nines"?
answer
quick way to determine how much of the skin's surface has been burned
question
Which of the following is not a characteristic of the hypodermis?
answer
It is the primary layer affected by decubitus ulcers.
question
cutaneous plexus .
answer
F. blood vessels that nourish the hypodermis and deeper dermis
question
reticular layer
answer
C. dense irregular CT; 80% of the dermis
question
lines of cleavage
answer
D. run longitudinally in the skin of the limbs and in circular patterns around the neck and trunk
question
hypodermis
answer
E. anchors skin to underlying structures
question
papillary layer
answer
B. 20% of dermis; areolar CT
question
subpapillary plexus
answer
A. blood vessels supplying the superficial dermis and epidermis
question
Hair covering a fetus of five to six months is called __________.
answer
lanugo
question
An increase in melanin that is restricted to the basal layer of the epidermis is a __________.
answer
freckle
question
Heart failure or severe respiratory disorders may cause hemoglobin to be poorly oxygenated, resulting in __________.
answer
cyanosis
question
Modified sweat glands that line the external ear canal are __________ glands
answer
ceruminous
question
Apocrine sweat gland secretions are involved with sexual signaling and have been identified as true human __________.
answer
pheromones
question
What is the fate of melanin above the stratum basale in light-skinned people?
answer
It is digested by lysosomes.
question
A burn that causes blistering and in which the epidermis and the upper part of the dermis are injured is a __________-degree burn.
answer
second
question
Why can humans dissipate heat so well, compared to other animals?
answer
Humans have more extensive dermal blood vessels than any other animal.
question
The stratum basale (germinativum) consists of two rows of cells, mostly stem cells representing the youngest keratinocytes.
answer
False
question
Which of the following epidermal cells are the most abundant, are tightly connected to one another by a large number of desmosomes, and arise from cells that undergo almost continuous mitosis?
answer
keratinocytes
question
Which of the following is not an appendage of the integument?
answer
teeth
question
keratinocytes
answer
A. all epidermal strata
question
keratohyalin
answer
C. stratum granulosum
question
Langerhans cells
answer
D. stratum spinosum
question
melanocytes
answer
B. stratum basale
question
Lines of cleavage, or tension lines of the skin, are found in which integumentary layer?
answer
reticular layer of the dermis
question
The layer immediately deep to the skin is called the __________.
answer
hypodermis
question
Each hair follicle goes through growth cycles. The __________ phase is when the hair matrix is inactive.
answer
resting
question
first-degree burn
answer
D. tissue damage to the epidermis only
question
basal cell carcinoma
answer
B. cells of the stratum basale proliferate, invading the dermis and hypodermis, causing tissue erosions
question
melanoma
answer
A. the most dangerous type of skin cancer, which can originate wherever there is pigment
question
second-degree burn
answer
C. tissue damage to the epidermis and upper portion of the dermis
question
nails
answer
D. scale-like modifications of the epidermis
question
ceruminous glands
answer
C. modified version of coiled, simple tubular glands, which are located in the lining of the external ear canal
question
apocrine sweat gland
answer
B. larger coiled versions of a simple tubular gland whose ducts open into hair follicles
question
sebaceous glands
answer
A. simple branched alveolar glands with several alveoli opening into a single duct into hair follicles
question
Tension lines of the skin or lines of cleavage are formed by separations or less dense regions between the collagen bundles of the reticular layer of the dermis.
answer
true
question
Sebaceous glands are simple branched alveolar glands with several alveoli opening into a simple duct, but the alveoli are actually filled with cells, so there is no lumen.
answer
true
question
The most superficial layer of the epidermis, the stratum corneum is many cells thick. It is comprised of dead __________.
answer
keratinocytes
question
The ABCD rule for recognizing melanoma is which of the following?
answer
asymmetry, border irregularity, color, diameter
question
Regarding skin cancer, __________ is the least malignant and most common.
answer
basal cell carcinoma
question
corneum
answer
D. dead cells, which are flat membranous sacs filled with keratin; glycolipids exist in the extracellular spaces
question
stratum basale
answer
B. cells are actively mitotic stem cells; some newly formed cells become part of the other layers
question
stratum spinosum
answer
C. cells contain thick bundles of intermediate filaments made of pre-keratin.
question
stratum granulosum
answer
A. cells are flattened, with deteriorating organelles; cytoplasm is full of keratohyalin and lamellated granules
question
The body hair of women and children is of what type?
answer
vellus
question
The melanocytes produce the dark skin pigment melanin; naturally, these cells contain more melanin than do the keratinocytes.
answer
false
question
The short, fine body hair of children and women is of the __________ variety, whereas the longer, coarser hair of everyone's scalp is of the terminal variety.
answer
vellus
question
The mammary glands are specialized sweat glands.
answer
true
question
alopecia
answer
B. condition involving absence or loss of hair.
question
impetigo
answer
D. pink, fluid-filled raised lesions caused by a Staphylococcus infection
question
cold sores
answer
C. small, painful fluid-filled blisters caused by the herpes simplex virus
question
boils and carbuncles
answer
A. infection and inflammation of hair follicles and sebaceous glands that has spread into the underlying hypodermis