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45 Cards in this Set

  • Front
  • Back
Thick skin can be found on the ______, ______, & _____.
palms,
soles,
fingertips
The combination of collagen & elastic fibers in the reticular region of the dermis provides skin with ______, ______, & ______.
strength,
extensibility,
elasticity
Modified sweat glands in the ear are called ______ glands.
ceruminous
The pigments that give skin a wide variety of colors are ______, ______, & _______.
melanin,
carotene,
hemoglobin
The substance that prevents excessive evaporation of water from the skin, keeps the skin soft & pliable, and inhibits the growth of bacteria is?

a. sebum
b. sweat
c. cerumen
d. carotene
e. melatonin
a. sebum
Epidermal ridges ...

a. indicate the predominant direction of underlying collagen fiber bundles

b. increase the grip of the hand or foot

c. provide the pigments of skin color

d. synthesize vitamin D in the epidermis of the skin
b. increase the grip of the hand or foot
TO permanently remove hair you must destroy the?

a. matrix
b. shaft
c. cuticle
d. arrector pilli
e. external root sheath
a. matrix
Which statements are true?
1. Nails are composed of tightly packed, hard, keratinized cells of the epidermis that form a clear, solid covering over the dorsal surface of the terminal end of the digits

2. The free edge of the nail is white due to absence of capillaries

3. Nails help us to grasp & manipulate small objects

4. Nails protect the ends of the digits from trauma

5. Nail color is due to a combination of melanin & carotene
1,3, & 4
When performing surgery, the physician's scalpel would first cut through which layer of the surface epidermis?

a. stratum granulosum
b. stratum basale
c. stratum corneum
d. stratum spinosum
e. stratum lucidum
c. stratum corneum
Which statements are true?
1. A first-degree burn involves only the surface epidermis

2. In a 2nd degree burn, no skin function is lost

3. 1st & 2nd degree burns are collectively referred to as partial thickness burns

4. A 3rd degree burn destroys the epidermis, dermis, & epidermal derivatives

5. When burns exceed 20% of body surface are, more than half the victims die
1,3,& 4
Deep region of the dermis composed primarily of dense irregular connective tissue
reticular region
Composed of keratinized stratified squamous epithelial tissue
epidermis
Not considered part of the skin, it contains areolar & adipose tissues & blood vessels; attaches skin to underlying tissues & organs.
subcutaneous layer
(hypodermis)
Superficial region of the dermis; composed of areolar connective tissue
papillary region
A skin disorder in which keratinocytes divide & move more quickly to the skin surface, are shed prematurely & make abnormal keratin
psoriasis
An inherited inability to produce melanin
albinism
A condition in which a partial or complete loss of melanocytes from patches of skin produce irregular white spots
vitiligo
A yellowed appearance of the whites of the eyes & of light colored skin, usually indicating liver disease.
jaundice
A bluish appearance of mucous membranes, nail beds, 7 light-colored skin due to oxygen depletion
cyanosis
Redness of the skin caused by engorgement of capillaries in the dermis with blood.
erythema
Partial or complete lack of hair
alopecia
An inflammation of sebacious glands
acne
A precancerous skin lesion induced by sunlight
solar keratosis
The most common form of skin cancer
basal cell carcinoma
A skin sore caused by long-standing, pressure-induced deficiency of blood flow to tissues overlying a bony projection
decubitous ulcer
The process of scar tissue formation
fibrosis
A rapidly metastasizing, potentially fatal form of skin cancer
malignant melanoma
Produce the protein that helps protect the skin & underlying tissues from light, heat, microbes, & many chemicals
keratinocytes
Produce the pigment that contributes to skin color & absorbs ultraviolet light
melanocytes
Cells that arise from red bone marrow, migrate to the epidermis, & participate in immune response
Langerhans cells
Cells thought to function in the sensation of touch
Merkel cells
AN abnormal thickening of the epidermis
callus
Release of lipid-rich secretion that functions as a water repellent sealant in the stratus granulosum
lamellar granules
Pressure-sensitive cells found mostly in the subcutaneous layer
lamellated (Pacinian)
corpuscles
A fatty substance that covers & protects the skin of the fetus from the constant exposure to amniotic fluid
vernix caseosa
A liberation of sweat at the surface & adjustment of blood flow in the dermis
thermoregulation
Provision of a chemical barrier & resistance to microbial invasion
protection
Input of touch, pressure, pain, & heat & cold information
sensation
Elimination of usually unneeded substances & passage of materials from the external environment into the body cells
excretion
&
absorption
Production of calcitriol
vitamin D synthesis
Phase in which epithelial cells migrate under scab to bridge the would; formation of granulation tissue
migratory phase
Phase: sloughing of scab; reorganization of collagen fibers; blood vessels return to normal
maturation phase
Phase: Vasodilation & increased permeability of blood vessels to deliver cells involved in phagocytosis; clot formation
inflammatory phase
Phase: Extensive growth of epithelial cells beneath scab; random deposition of collagen fibers; continued growth of blood vessels
proliferative phase
Correct ordering of phases?

proliferative, inflammatory,
maturation, migratory
inflammatory,
migratory,
proliferative,
maturation