Biology Exam Questions and Answers
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What is a contraindication? - ✔✔a contraindication would be any reason
the client medically speaking cannot get a treatment done. For example, if
your client; a pregnant woman, comes in requesting laser hair removal you
will not be able to do the treatment.
Some medications that increase photosensitivity - ✔✔-Antihistamines
-Coal Tar and Derivatives
-Contraceptives, Oral and Estrogens
-Non-Steroidal Anti-Inflammatory Drugs
-Phenothiazines
-Psoralens
-Sulfonamides
-Sulfonylureas
-Thiazide Diuretics
-Tetracyclines
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, Cuticle - ✔✔is the thin, translucent outer layer that protects the cortex.
Cortex - ✔✔intermediate gives hair strength, color and texture.
Medulla - ✔✔is the central core of the cells that form the innermost layer of
the skin.
The functions of hair - ✔✔protection, regulation of body temperature, and
facilitation of evaporation of perspiration; hairs also act as sense organs
Anagen Phase - ✔✔It's the longest phase, lasting about 3 to 5 years for the
hairs on your head. Continue growing for 7 or more years. 80%-90% of
your hair will be in this phase.
Catagen Phase - ✔✔catagen phase starts when the anagen phase ends,
and last about 10 days. Hair follicles shrink and hair growth slows down.
Hair separates from the bottom of the follicle. only 5% of your hair will be in
this phase at any given time
Telegen Phase - ✔✔Hair doesn't grow, doesn't usually fall out either. Also
when new hairs start to form in follicles that have just released during the
catagen. 10%-15% of your scalp hair is in this phase at all times.
Exogen Phase - ✔✔extension or a part of the telegen stage. hair is shed
from the scalp, often helped along by washing and brushing. Losing 50 to
100 hairs
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