HLSC 2416 EXAM 3 WITH READY AND
CORRECT ANSWERS YEAR 2024/2025
largest; 20 - verified answers-The skin is the __________
organ system in the body -- it covers _____ square feet of
surface area in the average adult.
epidermis (outer) and dermis (inner0 - verified answers-What
are the two layers of the skin?
a subcutaneous layer of adipose tissue - verified answers-What
lies beneath the two layers of skin?
a thin but tough protective outer layer - verified answers-
Explain the epidermis.
they are bound tightly together in sheets that form a rugged
protective barrier - verified answers-How are cells organized in
the epidermis?
the inner layer of the epidermis that forms new skin cells -
verified answers-Explain the basal cell layer.
keratin - verified answers-What is the major ingredient in skin
cells formed in the basal cell layer?
melanocytes; melanin - verified answers-The ______________
interspersed along the basal cell layer produce the pigment
__________, which gives brown tones to the skin and hair.
True: only the amount of melanin they produce varies with
genetic, hormonal, and environmental influences. - verified
answers-T/F: People of all skin colors have the same number
of melanocytes.
the layer above the basal layer where new cells migrate to and
flatten; consists of dead keratinized cells that are interwoven
,and closely packed (cells are constantly being shed, or
desquamated, and are replaced with new cells) - verified
answers-Explain the horny cell layer.
every 4 weeks - verified answers-How often is the epidermis
completely replaced?
palms and soles - verified answers-Where is the skin thicker
because of work and weight bearing?
1. melanin (brown)
2. carotene (yellow-orange)
3. red-purple tones in underlying vascular bed - verified
answers-Where is skin color derived from?
the inner supportive layer consisting mostly of connective
tissue/ collagen - verified answers-Explain the dermis.
a tough, fibrous protein that enables the skin to resist tearing -
verified answers-What is collagen?
dermis - verified answers-The nerves, sensory receptors, blood
vessels, and lymphatics lie in the _________.
hair follicles, sebaceous glands, and sweat glands - verified
answers-What are some appendages from the epidermis that
are embedded in the dermis?
adipose tissue (lobules of fat cells) that stores fat for energy,
provides insulation for temperature control, and aids in
protection
also gives skin increased mobility - verified answers-Explain the
subcutaneous layer's structure and functions.
keratin - verified answers-Hairs are threads of __________.
,shaft; root - verified answers-The hair ________ is the visible
projecting part, and the _______ is below the surface
embedded in the follicle.
the expanded area at the root where new cells are produced at
a high rate - verified answers-What is the bulb matrix?
independently (some are resting and some are growing) -
verified answers-Each follicle functions ________________.
muscles that contract and elevate the hair so it resembles
"goose flesh" when the skin is exposed to cold or in emotional
states - verified answers-What are arrector pili muscles?
vellus and terminal hair - verified answers-What are the two
types of hair?
Fine, faint hair that covers most of the body - verified answers-
What are vellus hairs?
darker, thicker hair that grows on the scalp and eyebrows and,
after puberty, on the axillae, the pubic area, and the face and
chest in the male - verified answers-What are terminal hairs?
glands that produce a protective lipid substance, sebum, which
is secreted through the hair follicles - verified answers-What are
sebaceous glands?
sebum - verified answers-________ oils and lubricates the skin
and hair and forms an emulsion with water that retards water
loss from the skin
everywhere except the palms and soles; most abundant on the
scalp, forehead, face, and chin - verified answers-Where are
sebaceous glands located?
, eccrine and apocrine - verified answers-What are the two types
of sweat glands?
-coiled tubules that open directly onto the skin surface and
produce a dilute saline solution called sweat
-widely distributed
-mature in 2-month old infant - verified answers-What are
eccrine glands?
-glands that produce a thick, milky secretion and open into the
hair follicles
-mainly in axillae, anogenital area, nipples, and navel
-become active during puberty - verified answers-What are
apocrine glands?
bacterial flora residing on the skin surface reacts with apocrine
sweat - verified answers-What produces the characteristic
musky body odor?
hard plates of keratin on the dorsal edges of the fingers and
toes - verified answers-Describe nails.
lunula - verified answers-The _________ is the white, opaque,
semilunar area at the proximal end of the nail.
covers and protects the nail matrix - verified answers-What is
the function of the cuticle?
protection
prevents penetration
perception
temperature regulation
identification
communication
wound repair
absorption and excretion
CORRECT ANSWERS YEAR 2024/2025
largest; 20 - verified answers-The skin is the __________
organ system in the body -- it covers _____ square feet of
surface area in the average adult.
epidermis (outer) and dermis (inner0 - verified answers-What
are the two layers of the skin?
a subcutaneous layer of adipose tissue - verified answers-What
lies beneath the two layers of skin?
a thin but tough protective outer layer - verified answers-
Explain the epidermis.
they are bound tightly together in sheets that form a rugged
protective barrier - verified answers-How are cells organized in
the epidermis?
the inner layer of the epidermis that forms new skin cells -
verified answers-Explain the basal cell layer.
keratin - verified answers-What is the major ingredient in skin
cells formed in the basal cell layer?
melanocytes; melanin - verified answers-The ______________
interspersed along the basal cell layer produce the pigment
__________, which gives brown tones to the skin and hair.
True: only the amount of melanin they produce varies with
genetic, hormonal, and environmental influences. - verified
answers-T/F: People of all skin colors have the same number
of melanocytes.
the layer above the basal layer where new cells migrate to and
flatten; consists of dead keratinized cells that are interwoven
,and closely packed (cells are constantly being shed, or
desquamated, and are replaced with new cells) - verified
answers-Explain the horny cell layer.
every 4 weeks - verified answers-How often is the epidermis
completely replaced?
palms and soles - verified answers-Where is the skin thicker
because of work and weight bearing?
1. melanin (brown)
2. carotene (yellow-orange)
3. red-purple tones in underlying vascular bed - verified
answers-Where is skin color derived from?
the inner supportive layer consisting mostly of connective
tissue/ collagen - verified answers-Explain the dermis.
a tough, fibrous protein that enables the skin to resist tearing -
verified answers-What is collagen?
dermis - verified answers-The nerves, sensory receptors, blood
vessels, and lymphatics lie in the _________.
hair follicles, sebaceous glands, and sweat glands - verified
answers-What are some appendages from the epidermis that
are embedded in the dermis?
adipose tissue (lobules of fat cells) that stores fat for energy,
provides insulation for temperature control, and aids in
protection
also gives skin increased mobility - verified answers-Explain the
subcutaneous layer's structure and functions.
keratin - verified answers-Hairs are threads of __________.
,shaft; root - verified answers-The hair ________ is the visible
projecting part, and the _______ is below the surface
embedded in the follicle.
the expanded area at the root where new cells are produced at
a high rate - verified answers-What is the bulb matrix?
independently (some are resting and some are growing) -
verified answers-Each follicle functions ________________.
muscles that contract and elevate the hair so it resembles
"goose flesh" when the skin is exposed to cold or in emotional
states - verified answers-What are arrector pili muscles?
vellus and terminal hair - verified answers-What are the two
types of hair?
Fine, faint hair that covers most of the body - verified answers-
What are vellus hairs?
darker, thicker hair that grows on the scalp and eyebrows and,
after puberty, on the axillae, the pubic area, and the face and
chest in the male - verified answers-What are terminal hairs?
glands that produce a protective lipid substance, sebum, which
is secreted through the hair follicles - verified answers-What are
sebaceous glands?
sebum - verified answers-________ oils and lubricates the skin
and hair and forms an emulsion with water that retards water
loss from the skin
everywhere except the palms and soles; most abundant on the
scalp, forehead, face, and chin - verified answers-Where are
sebaceous glands located?
, eccrine and apocrine - verified answers-What are the two types
of sweat glands?
-coiled tubules that open directly onto the skin surface and
produce a dilute saline solution called sweat
-widely distributed
-mature in 2-month old infant - verified answers-What are
eccrine glands?
-glands that produce a thick, milky secretion and open into the
hair follicles
-mainly in axillae, anogenital area, nipples, and navel
-become active during puberty - verified answers-What are
apocrine glands?
bacterial flora residing on the skin surface reacts with apocrine
sweat - verified answers-What produces the characteristic
musky body odor?
hard plates of keratin on the dorsal edges of the fingers and
toes - verified answers-Describe nails.
lunula - verified answers-The _________ is the white, opaque,
semilunar area at the proximal end of the nail.
covers and protects the nail matrix - verified answers-What is
the function of the cuticle?
protection
prevents penetration
perception
temperature regulation
identification
communication
wound repair
absorption and excretion
