HLSC 2416 Exam 3 MOSTLY TESTED QUESTIONS AND
CORRECT DETAILED ANSWERS| 100% CORRECT
SOLUTIONS/GRADE A+
Terms in this set (427) Original
The skin is the __________ organ
system in the body -- it covers _____
largest; 20
square feet of surface area in the
average adult.
epidermis (outer) and dermis (inner0 What are the two layers of the skin?
What lies beneath the two layers of
a subcutaneous layer of adipose tissue
skin?
,a thin but tough protective outer layer Explain the epidermis.
they are bound tightly together in sheets that form a How are cells organized in the
rugged protective barrier epidermis?
the inner layer of the epidermis that forms new skin cells Explain the basal cell layer.
What is the major ingredient in skin
keratin
cells formed in the basal cell layer?
The ______________ interspersed
along the basal cell layer produce the
melanocytes; melanin
pigment __________, which gives
brown tones to the skin and hair.
True: only the amount of melanin they produce varies T/F: People of all skin colors have
with genetic, hormonal, and environmental influences. 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 Explain the horny cell layer.
being shed, or desquamated, and are replaced with new
cells)
, How often is the epidermis
every 4 weeks
completely replaced?
Where is the skin thicker because of
palms and soles
work and weight bearing?
1. melanin (brown)
2. carotene (yellow-orange) Where is skin color derived from?
3. red-purple tones in underlying vascular bed
the inner supportive layer consisting mostly of
Explain the dermis.
connective tissue/ collagen
a tough, fibrous protein that enables the skin to resist
What is collagen?
tearing
The nerves, sensory receptors, blood
dermis vessels, and lymphatics lie in the
_________.
What are some appendages from the
hair follicles, sebaceous glands, and sweat glands epidermis that are embedded in the
dermis?
, adipose tissue (lobules of fat cells) that stores fat for
energy, provides insulation for temperature control, and Explain the subcutaneous layer's
aids in protection structure and functions.
also gives skin increased mobility
keratin Hairs are threads of __________.
The hair ________ is the visible
projecting part, and the _______ is
shaft; root
below the surface embedded in the
follicle.
the expanded area at the root where new cells are
What is the bulb matrix?
produced at a high rate
Each follicle functions
independently (some are resting and some are growing)
________________.
muscles that contract and elevate the hair so it resembles
"goose flesh" when the skin is exposed to cold or in What are arrector pili muscles?
emotional states
vellus and terminal hair What are the two types of hair?
CORRECT DETAILED ANSWERS| 100% CORRECT
SOLUTIONS/GRADE A+
Terms in this set (427) Original
The skin is the __________ organ
system in the body -- it covers _____
largest; 20
square feet of surface area in the
average adult.
epidermis (outer) and dermis (inner0 What are the two layers of the skin?
What lies beneath the two layers of
a subcutaneous layer of adipose tissue
skin?
,a thin but tough protective outer layer Explain the epidermis.
they are bound tightly together in sheets that form a How are cells organized in the
rugged protective barrier epidermis?
the inner layer of the epidermis that forms new skin cells Explain the basal cell layer.
What is the major ingredient in skin
keratin
cells formed in the basal cell layer?
The ______________ interspersed
along the basal cell layer produce the
melanocytes; melanin
pigment __________, which gives
brown tones to the skin and hair.
True: only the amount of melanin they produce varies T/F: People of all skin colors have
with genetic, hormonal, and environmental influences. 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 Explain the horny cell layer.
being shed, or desquamated, and are replaced with new
cells)
, How often is the epidermis
every 4 weeks
completely replaced?
Where is the skin thicker because of
palms and soles
work and weight bearing?
1. melanin (brown)
2. carotene (yellow-orange) Where is skin color derived from?
3. red-purple tones in underlying vascular bed
the inner supportive layer consisting mostly of
Explain the dermis.
connective tissue/ collagen
a tough, fibrous protein that enables the skin to resist
What is collagen?
tearing
The nerves, sensory receptors, blood
dermis vessels, and lymphatics lie in the
_________.
What are some appendages from the
hair follicles, sebaceous glands, and sweat glands epidermis that are embedded in the
dermis?
, adipose tissue (lobules of fat cells) that stores fat for
energy, provides insulation for temperature control, and Explain the subcutaneous layer's
aids in protection structure and functions.
also gives skin increased mobility
keratin Hairs are threads of __________.
The hair ________ is the visible
projecting part, and the _______ is
shaft; root
below the surface embedded in the
follicle.
the expanded area at the root where new cells are
What is the bulb matrix?
produced at a high rate
Each follicle functions
independently (some are resting and some are growing)
________________.
muscles that contract and elevate the hair so it resembles
"goose flesh" when the skin is exposed to cold or in What are arrector pili muscles?
emotional states
vellus and terminal hair What are the two types of hair?
