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IBEC Terminology
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Exam of 19 pages for the course WGU - D291 Pre-Assessment Review Learning Experien at WGU - D291 Pre-Assessment Review Learning Experien (IBEC Terminology)
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IBEC TerminologyAbsorption - correct answer-The uptake of one substance into another
Acid mantle - correct answer-The bacteria-killing layer made of sweat and lipids
Adipose tissue - correct answer-Connective tissue in animal bodies that contains fat
Amino acid - correct answer-Units of structure in protein that help break down simple sugars
and fats
Apocrine - correct answer-Glands in the axillae and groin that secrete sweat and substances
that produce body odor when contaminated with bacteria
Arrector Pili - correct answer-An appendage that is attached to the hair follicle
Axillae - correct answer-Armpits
Basal Zone - correct answer-Live layer of dividing cells that continuously change and push
upward
Catagen - correct answer-Transition stage of the hair's growth cycle; the period between the
growth and resting phases
Club hair - correct answer-Hair that has lost its root structure and that, when shed from the
follicle, exhibits a round shape
Collegenous - correct answer-Fiber made of protein that gives the skin its form and strength
Connective tissue - correct answer-Fibrous tissue that binds, protects, cushions, and
supports the various parts of the body
Constriction - correct answer-The process of narrowing
Cortex - correct answer-Middle layer of the hair; a fibrous protein core formed by elongated
cells containing melanin
Cosmeceuticals - correct answer-Products that fall between the categories of
pharmaceuticals and cosmetics and that generally have a higher level of absorption than
standard cosmetics
Cuticle - correct answer-The outermost layer of hair consisting of one overlapping layer of
transparent, scale-like cells
Dermal Papilla - correct answer-Small, cone-shaped indentation at the base of the hair
follicle that fits into the hair bulb; contains capillaries for hair nourishment
,Dermis - correct answer-Underlying or inner layer of the skin
Desquamation - correct answer-The act of exfoliating dead skin cells
Dilation - correct answer-The process of widening or expanding
Eccrine - correct answer-Glands throughout the skn that excrete mainly water and salt
Eleidin - correct answer-Clear, lifeless matter deposited in the form of minute keratohyalin
granules in the protoplasm of living cells
Epidermis - correct answer-The thin, outermost layer of the skin
Epithelial tissue - correct answer-The tissue that forms a thin protective layer on bodily
surfaces
Excretion - correct answer-The act of discharging waste matter from tissues or organs
External root sheath - correct answer-The inner side of the follicular canal which is made of
horny epidermal tissue
Follicular canal - correct answer-The depression in the skin that houses the entire
pilosebaceous unit
Germinal Zone - correct answer-The layer of skin where cells divide
Hair follicle bulb - correct answer-The bulbous base of the hair follicle that houses the dermal
papilla
Hair matrix - correct answer-The germinating center of the hair follicle where mitotic activity
occurs
Horny zone - correct answer-The outermost portion of the epidermis
Internal root sheath - correct answer-The innermost layer of the hair follicle, closest to the
hair
Keratin - correct answer-A protein found in the skin that helps guard against invasion
Keratinization - correct answer-The change of living cells to dead ones
Keratohyalin granules - correct answer-Granules found in living cells that contribute to the
keratin content of dead, confined cells
Langerhans' cells - correct answer-Cells found in the epidermis that warn against the
invasion of microorganisms and respond to that invasion
, Lanugo - correct answer-Soft, downy hair present on fetuses in utero, and infants at birth
Leukocytes - correct answer-White blood cells or corpuscles
Lymph - correct answer-Colorless, watery fluid that circulates through the lymphatic system;
similar in composition to blood plasma
Lymphocytes - correct answer-Cells produced in the lymph nodes, spleen, and thymus gland
that produce antibodies capable of attacking infection
Malpighian - correct answer-A skin layer made of the stratum mucosum and the stratum
germinativum
Medulla - correct answer-The innermost layer of hair' composed of round cells; often absent
in the fine hair
Meissner's corpuscles - correct answer-Nerve endings in the skin that are sensitive to touch
Melanin - correct answer-Grains of pigment that give hair and skin its color
Melanocytes - correct answer-Melanin-forming cells
Mitosis - correct answer-The process by which a cell divides into two daughter cells
Pacinian's Corpuscles - correct answer-Nerve endings found deep in the skin that are
receptive to pressure
Papillae - correct answer-Cone-shaped, finger-like projections that protrude into the
epidermis
Papillary layer - correct answer-The most superficial layer of the dermis
Pheromones - correct answer-Chemicals produced by humans and other animals that, when
secreted, influence other members of the same species
Pilosebaceous unit - correct answer-The entire hair appendage, including the sebaceous
gland and the arrector pilli muscle
Reticular layer - correct answer-A deep layer of the dermis; composed of dense bundles of
collagen fibers; contains vessels, glands, nerve endings, and follicles
Sebaceous glands - correct answer-Oil glands of the skin connected to hair follicle
Sebum - correct answer-Fatty or oily secretions of the sebaceous gland that lubricates the
hair and skin
Secretion - correct answer-The process of producing and discharging substances from
glands
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