WorksheetsBIO121 Chapter 6 MH
Total questions: 61
Worksheet time: 46mins
Name
Class
Date
1.
The epithelial tissue root sheath is the _________ layer of the concentric layers making up the hair follicle wall; it derives from the _________.
a)
outer; epidermis
b)
outer; dermis
c)
inner; epidermis
d)
inner; dermis
2.
The type of gland that excretes sweat into a hair follicle that is found in the axillary, anal, and genital regions is the_________ sweat gland.
a)
apocrine
b)
sebaceous
c)
merocrine
d)
ceruminous
3.
Immune cells of the epidermis tend to be found in the stratum
a)
lucidum.
b)
basale.
c)
corneum.
d)
spinosum.
e)
granulosum.
4.
Freckles are the result of
a)
melanocyte number and sun exposure.
b)
melanocyte number, genetic inheritance, and diet.
c)
melanocyte activity, genetic inheritance, and sun exposure.
d)
melanocyte number and genetic inheritance.
e)
melanocyte activity and diet.
5.
The structure responsible for pulling on the follicle and causing "goose bumps" is the
a)
internal root sheath.
b)
external root sheath.
c)
arrector pili muscle.
d)
epithelial root sheath.
e)
papilla.
6.
While most of the cells in a hair are dead, the living epithelial cells are found in
a)
the cuticle of the hair shaft.
b)
the hyponychium.
c)
the cortex of the hair shaft.
d)
the hair bulb.
7.
Sebum is an excretion that
a)
acts as a pheremone once reproductive maturity is reached.
b)
maintains water balance through waterproofing the skin.
c)
cools the skin and eliminates certain drugs.
d)
lubricates skin and helps defend against bacteria.
8.
Within the body, carotene is converted to
a)
vitamin E, which is important for visual function.
b)
vitamin A, which is important for auditory function.
c)
vitamin A, which is important for visual function.
d)
vitamin E, which is important for auditory function
9.
Cancer cells in the epidermis are attacked by
a)
keratinocytes.
b)
epidermal dendritic cells.
c)
melanocytes.
d)
Merkel cells.
10.
Lines of cleavage are a result of
a)
wounds to the epidermis such as hemangiomas.
b)
the alignment of epidermal ridges.
c)
the orientation of collagen fibers in the dermis.
d)
the alignment of dermal papillae.
11.
Sweat and sebaceous glands develop from the
a)
stratum corneum.
b)
papillary layer of the dermis.
c)
reticular layer.
d)
hypodermis.
e)
stratum basale of the epidermis.
12.
In order to retain heat, what occurs in the skin on a cold day?
a)
Blood vessels of the dermis dilate.
b)
Blood vessels of the epidermis constrict.
c)
Blood vessels of the epidermis dilate.
d)
Blood vessels of the dermis constrict.
13.
Another name for the skin is the_________ membrane.
a)
serous
b)
visceral
c)
parietal
d)
mucous
e)
cutaneous
14.
What type of epithelium is found in the epidermis?
a)
Nonkeratinized stratified squamous
b)
Transitional
c)
Keratinized stratified squamous
d)
Nonkeratinized stratitified cuboidal
e)
Keratinized stratified cuboidal
15.
Compared to a young person, older individuals have_________ epidermal dendritic skin cells.
a)
fewer
b)
more
16.
Which of these are functions of hair? Sensory reception Heat retention Immune function Protection
a)
Formation of Vitamin D3
b)
a, d, e
c)
a, b, c, d, e
d)
a, b, d, e
e)
a, b, d
17.
Which skin markings usually disappear during childhood?
a)
Cavernous hemangiomas
b)
Friction ridges
c)
Pili
d)
Nevi
e)
Capillary hemangiomas
18.
Skin cancer is the_________ type of cancer, and due to sun exposure it occurs most frequently on the_________.
a)
third most common; head and neck
b)
most common; hands and ears
c)
third most common; hands and ears
d)
most common; head and neck
19.
The reticular layer of the dermis consists primarily of
a)
elastic connective tissue.
b)
nervous tissue.
c)
reticular connective tissue.
d)
adipose tissue.
e)
dense irregular connective tissue.
20.
Blood capillaries that supply nourishment for the epidermis are located in the
a)
epidermis proper.
b)
dermal papillae.
c)
subcutaneous layer.
d)
reticular connective tissue.
e)
epidermal ridges.
21.
Cerumen is an excretion that
a)
lubricates the ear canal and traps debris before it reaches the eardrum.
b)
cools the body through water evaporation.
c)
lubricates vellus hairs and waterproofs the skin of the limbs.
d)
acts as a pheremone.
e)
tends to cause acne on the skin of the face.
22.
Structures found in the dermis include
a)
sweat glands
b)
hair follicles
c)
collagen fibers
d)
sensory nerve endings
e)
arrector pili muscles
23.
What is the composition of the subcutaneous layer?
a)
Adipose connective tissue
b)
Areolar connective tissue
c)
Dense irregular connective tissue
d)
Areolar connective tissue and dense irregular connective tissue
e)
Areolar connective tissue and adipose connective tissue
24.
Production of this vitamin requires skin exposure to the sun. This vitamin is crucial for regulation of calcium and phosphate.
a)
Vitamin
b)
Vitamin D
c)
Vitamin A
d)
Vitamin E
e)
Vitamin C
25.
The function of melanin in the skin is to
a)
prevent infections.
b)
help regulate body temperature.
c)
protect against UV light.
d)
keep the epidermis soft and pliable.
e)
reduce water loss.
26.
Tactile (Merkel) cells are sensitive to
a)
cold.
b)
heat.
c)
light.
d)
sound.
e)
touch.
27.
One of the main dangers of burns is
a)
dehydration, as water can escape from the body.
b)
hyperthermia, as temperture regulation is very compromised.
c)
respiratory infection, as body defenses are concentrated superficially.
d)
hypocalcemia, as blood ion levels are dramatically altered.
28.
Normally, skin color results from a combination of melanin hemoglobin bilirubin carotene
a)
a, b, c
b)
a, b, d
c)
a, c, d
d)
b, c, d
e)
a, d
29.
Which type of hair forms the beard on the face in response to testosterone?
a)
Pilus
b)
Terminal
c)
Lanugo
d)
Nonpigmented
e)
Vellus
30.
Nails are hard derivatives formed from the stratum_________ of the epidermis.
a)
lucidum
b)
granulosum
c)
basale
d)
corneum
e)
spinosum
31.
Thick skin contains
a)
four epidermal strata and lacks sebaceous glands.
b)
seven epidermal strata and lacks sweat glands.
c)
five epidermal strata and lacks sweat glands.
d)
five epidermal strata and lacks sebaceous glands.
e)
six epidermal strata and lacks sweat glands.
32.
The part of the hair that extends beyond the skin surface is called the
a)
bulb.
b)
alopecia.
c)
shaft.
d)
root.
e)
papilla.
33.
When exposed to ultraviolet light, keratinocytes convert a steroid precursor into_________, a molecule that is crucial for regulation of calcium levels.
a)
calcitonin
b)
calcitriol
c)
phosphorus
d)
creatine
e)
cholecalciferol
34.
Where on the human body is the hair thick enough to retain heat?
a)
Nose
b)
Axillary region
c)
Beard
d)
Scalp
e)
Pubic region
35.
Which is the actively growing part of the nail?
a)
Nail folds
b)
Nail bed
c)
Free edge
d)
Nail matrix
e)
Nail root
36.
What is the greatest risk factor for skin cancer?
a)
Vasoconstriction of dermal blood vessels
b)
Exposure to UV light rays
c)
Using excessive sun block
d)
Advanced age
e)
Low skin hydration levels
37.
Compared to a young adult, an older individual has_________ skin.
a)
thicker
b)
thinner
38.
Testosterone tends to cause accumulation of subcutaneous fat in the
a)
neck, abdomen, and buttocks.
b)
abdomen, forearms, and hips.
c)
breasts, upper back, and buttocks.
d)
hips and buttocks.
39.
Drugs that are administered by skin patches tend to be_________ soluble molecules that are absorbed_________.
a)
lipid; slowly
b)
water; quickly
c)
water; slowly
d)
lipid; quickly
40.
Which of these comprise the nail plate?
a)
Free edge
b)
Nail folds
c)
Eponchyium
d)
Nail root
e)
Nail body
41.
Epidermal dendritic (Langerhans) cells function as part of the_________ response.
a)
heating
b)
sweating
c)
immune
d)
tanning
e)
sensory
42.
Severe injuries and burns to the skin result in scars that are
a)
fully functional regenerations.
b)
made by macrophages, which produce a dense granulation tissue.
c)
produced by stratum basale keratinocytes, which effectively bind damaged skin parts together.
d)
produced by fibroblasts and made mainly of collagen.
e)
produced by chondrocytes and made mainly of desmosomes.
43.
From deep to superficial, the order of the strata of the epidermis of thick skin is
a)
Corneum - granulosum - lucidum - spinosum - basale
b)
Corneum - lucidum - granulosum - spinosum - basale
c)
Basale - spinosum - granulosum - lucidum - corneum
d)
Spinosum - granulosum - basale - lucidum - corneum
e)
Basale - granulosum - spinosum - lucidum - corneum
44.
The deeper sublayer of the dermis is the_________ layer, and it is the_________ of the two.
a)
reticular, thicker
b)
reticular, thinner
c)
papillary, thicker
d)
papillary, thinner
45.
Fine hair called_________, which is unpigmented or lightly pigmented, is the primary human hair and is found on the upper and lower limbs.
a)
lanugo
b)
terminal
c)
vellus
d)
phalanx
e)
cuticle
46.
The epidermis derives from
a)
granulation tissue.
b)
mesenchyme.
c)
ectoderm.
d)
mesoderm.
47.
The two types of leukocytes that clean up debris underneath the blood clot of a wound are
a)
fibroblasts and neutrophils.
b)
Merkel cells and dendritic cells.
c)
macrophages and neutrophils.
d)
dendritic cells and keratinocytes.
e)
keratinocytes and macrophages.
48.
Which layer of the skin contains blood vessels?
a)
Epidermis
b)
Stratum corneum
c)
Dermis
d)
Hypodermis
e)
Basale
49.
Which pigment is responsible for skin color and UV protection?
a)
Keratin
b)
Hemoglobin
c)
Melanin
d)
Carotene
e)
Collagen
50.
Which skin structure produces sweat?
a)
Sebaceous gland
b)
Sweat gland
c)
Hair follicle
d)
Arrector pili
e)
Melanocyte
51.
Which layer of the epidermis is the deepest?
a)
Corneum
b)
Lucidum
c)
Granulosum
d)
Spinosum
e)
Basale
52.
Which structure causes goose bumps?
a)
Hair bulb
b)
Sweat gland
c)
Arrector pili muscle
d)
Dermal papilla
e)
Sebaceous gland
53.
Which vitamin is synthesized in the skin with sunlight exposure?
a)
Vitamin A
b)
Vitamin B
c)
Vitamin C
d)
Vitamin D
e)
Vitamin K
54.
Which type of gland secretes sebum?
a)
Sweat gland
b)
Apocrine gland
c)
Sebaceous gland
d)
Merocrine gland
e)
Ceruminous gland
55.
Which layer of the skin is composed mostly of adipose tissue?
a)
Epidermis
b)
Dermis
c)
Hypodermis
d)
Stratum spinosum
e)
Papillary layer
56.
Which cells provide immune defense in the epidermis?
a)
Keratinocytes
b)
Melanocytes
c)
Merkel cells
d)
Langerhans cells
e)
Fibroblasts
57.
Which hair type is fine and lightly pigmented?
a)
Terminal
b)
Lanugo
c)
Vellus
d)
Pilus
e)
Cuticle
58.
Which structure is responsible for nail growth?
a)
Nail bed
b)
Nail fold
c)
Free edge
d)
Nail matrix
e)
Eponychium
59.
Which layer of thick skin is absent in thin skin?
a)
Basale
b)
Spinosum
c)
Granulosum
d)
Lucidum
e)
Corneum
60.
Which skin cancer is the most dangerous?
a)
Basal cell carcinoma
b)
Squamous cell carcinoma
c)
Melanoma
d)
Keratosis
e)
Papilloma
61.
Which structure anchors the hair into the dermis?
a)
Hair shaft
b)
Hair bulb
c)
Hair follicle
d)
Arrector pili
e)
Cuticle
100 %
