gray hair is caused by

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microbiology test 2

Question	Answer
Melanin is found mainly in which part of the hair.	cortex
The layer of the hair consisting of unique protein structures that give the hair most of its pigment and strength (elastically) is called the	cortex
what helps protect the hair and skin from becoming too dry	sebum
how long does the telogen, or resting stage of hair growth, last?	3-4 months
the technical term for the study of hair is called	trichology
the hair follicle term for the study of hair is called	elliptical
what determines the shape of the hair shaft as it grows?	the shape of the hair follicle
hair color is darker during which stage of growth	anagen
what is the natural flow or wave pattern of hair determined by	the angle if the follicle
gray hair is caused by	reduced color pigment in the cortex layer of the hair
the central of the hair shaft sometimes missing in fine or very fine hair is the	medulla
three factors that affect the behavior of hair are heredity, products or appliances and	environment
the two primary parts of hair are the hair fiber and the	hair root
the active growing stage of hair last from	2 to 6 years.
hair that has been pulled out from the roots can grow back under what circumstance	that papilla has not been destroyed
stimulation of the onset of the telogen stage or causing the production of abnormal, brittle hairs can be caused by	disease and medication
what term identifies the outer covering of the hair shaft made up of overlapping layers of transparent scales	cuticle
the follicle in straight hair is typically	round
the hair bulb itself is nearly doubled back over the follicle in a growth shape resembling a golf club in	tightly curled hair
what hair color is at the greatest risk for sun damage and can turn yellow from too much exposure	white hair
gray hair is sometimes referred to as	mottled hair
if the amount of pheomelanin is very concentrated and near the cuticle, the hair color will appear more	red
mitosis takes place in the area of the hair bulb called the	germinal matrix
hair that is 90% cortex and 10% cuticle when compared to hair that is 40% cuticle would be considered to be more	more elastic
what large hair structure is located at the base of the hair follicle	papilla
what is the total lack of pigmentation in the hair and skin called	albinism
bundles called melanosomes are formed by	melanocytes
hair grows from a tube-like "pocket" called a root sheath or a	follicle
the three major layers of the hair are the medulla, cortex, and	cuticle
what is formed when sebum produced by the oil glands mixes with the bodys perspiration	acid mantle
cilia is the technical term for	eyelash hair
catagen, a brief transitional stage of hair growth, lasts for what amount of time	only a few weeks
what term is another name for cell division	mitosis
the lips, soles of the feet, palms of the hands and eyelids do not have what	hair
eumelanin is the type of melanin that produces	brown/balck hair color
the acid mantle maintains the natural pH of hair and skin and protects the	cuticle
the hair growth stage when all cell division stops is the	catagen stage
the process of hair turning gray is most commonly caused by	the natural aging process
the technical name for the hair of the head is known as	capilli
hair color is influenced by the amount, size and distribution of	eumelanin and pheomelanin
what stage is knows as the active growing stage of hair	anagen stage
that hard, resistant layer pf protein that protects the hair shaft is	cuticle
the resting stage of hair growth when the hair bulb has no attached root sheath is referred to as	telogen stage
when looking through a microscope, which portion of the hair would display living cells	hair bulb
the muscle that causes the hair to stand on the end when a person is scared or cold is known as the	germinal matrix
the diameter of a hair fiber will be the same as	the inside diameter of the hair follicle
the technical name for the hair of the eyebrows is known as	supercilia
the cross-section, or diameter, of the hair shaft is much larger in coarse hair than	fine hair
what factor does not effect hair growth	frequent exercise
human hair, on average, grows about	1/2 inches per month
what is the portion of hair that extends above the skins surface	hair root
people with lighter colored hair have melanin in the	cortex only
fragilitis crinium is the technical name for	slit ends
what color hair generally has the highest number of hairs per square inch on the head	blond
traction alopecia can be caused by	tight cornrows
what procedural step is generally used to determine if hair loss may be identified as androgenetic alopecia	ask questions about family history
each hair strand has about how many layers of cuticle scales	7 to 12
small cracks starting in the cuticle and splitting the hair entirely are known as brittle hair, fragilitis crinium or	trichoptilosis
what is the hair loss caused by excessive pulling or twisting on the hair	traction
what description refers to the ability of hair to stretch and return to its original shape without breaking	elasticity
what may need to be done to hair in the dry climate to reduce static and soften the hair fibers	surface conditioning
the premature shedding of hair in the resting stage which can be the result of childbirth, shock, drug intake or fever is	telogen effluvium
of the layers of the cuticle are very close together, the hair has which type of porosity	resistant
extreme porosity describes hair that has been damaged by the environment or	overprocessed
a disorder that refers to a chronic scalp condition with excessive, flaking, which accumulates on the scalp or galls to the shoulders, is	pityriasis
red, watery vesicles, or pus-filled areas caused by an itch mite burrowing under the skin are known as	scabies
baldness that occurs early in life, beginning as early as late adolescence is referred to as	alopecia prematura
what hair problem may be caused by an inherited defect in the hairs keratin protein structure	trichorrhexis nodosa
the medical term for greasy or waxy dandruff is	pityriasis steatoides
malassezia is a microscopic fungus that is the leading cause of	dandruff
excessive matting of the hair is referred to as	pilca polonica
the amount of hair that should be parted and wrapped around a perm rod, roller or curling iron is influenced by	density
long thick pigmented hair such as scalp and eyebrow hair is referred to as	terminal hair
total loss of hair on the scalp is referred to as	alopecia areata universalis
various hair loss measurement systems identify what	treatment options
hair that has a combination of two or more different porosities is referred to as	average porosity
the degree of coarseness or fineness of the hair fiber is referred to as	texture
sudden hair loss in round or irregular patches without the display of an inflamed scalp is referred to as	alopecia areata
a disorder that refers to thick, crusty patches of res irritated scalp is known as	psoriasis
what is the average amount of hair loss daily	40 to 100
if the scalp appears abnormal at all, a client should see	a dermatologist
the most common form of hair loss in both men and women is	androgenetic alopecia
short, fine, non-pigmented hair that covers most of the body is called	vellus
the temporary hair loss occurring at the conclusion of pregnancy	postpartum alopacia
the loss of pigment in the hair as a person ages is called	acquired canities
lumps or swelling along the hair shaft is known as trichorrhexis nodosa or	knotted hair
the baby fine, silky hair that is shed shortly after birth and replaced with vellus is known as	lanugo
an abnormal coverage of hair on areas of the body where normally only lanugo, or baby-fine hair appears, is a condition known as	hypertrichosis
a condition in which beads or nodes form on the hair shaft is called	monilethrix
excessive amounts of terminal hair found in women in areas of the body where men usually get hair is a condition known as	hirsuties
pliability, buoyancy and springiness are words that could be used with your client to describe	elasticity
the name given to grayness or whiteness of the hair is	canitites
which of the following types of hair loss refers to the loss of hair over the entire scalp and body	alopecia areata universalis
what conditions results in a situation in which alternating bands of gray and dark hair exist	ringed hair
an infestation of head lice on the scalp is called	pediculosis capitis
the number of active hair follicles per square inch on the scalp refers to	density
what scalp disease might be present if prior to a service several dry, yellow, encrusted areas on he scalp are noticed along with a peculiar odor	tinea favosa
bib-medical options for hair loss include	wigs or toupees
the technical term for broken hair is	abraded hair
short, fine, non-pigmented hair is replaced with terminal hair around the time of	puberty
normal dry hair is capable of being stretched about how much of its length	20%
of the diameter of a female clintes ponytail has become smaller over time, it could indicate	androgenetic alopecia
dry flakes attached to the scalp or on the hair, which can appear translucent, are called	pityriasis capitis simplex
the ability of the hair to absorb moisture, liquids, or chemicals is known a	porosity
tinea is the medical term for	ringworm
male pattern baldness takes the shape of	a horseshoe-shaped fringe
in androgenetic alopecia, a combination of heredity, hormones and age causes	shrinking or miniaturization of certain scalp follicles
wet hair is able to be stretched to what percent of it length	40% to 50%
hair with normal ability to absorb moisture is said to have what kind of porosity	average
oily flakes combined with sebum, which stick to the scalp in clusters, are known as	greasy dandruff
a red, circular patch of small blisters on the skin or scalp caused by vegetable parasite is known as	ringworm
products claiming hair regrowth or hair loss provention cannot be marketed without which agencys prior review and approval	FDA
the cuticle layers protect which part of the hair strand	cortex
a highly stimulating, shaking motion describes which massage movement	vibration
a primary cause of water-spill accidents is	excessive water pressure
a shampoo bowl that allows you to stand behind the client helps	reduce back fatigue
which massage movement consists of a light tapping or slapping and is used to promote muscle contraction	tapotement
for medical and comfort purposes during a shampoo service, it is often recommended that elderly clients	lean forward into the shampoo bowl
which massage movement involves light, gliding strokes and is often used to begin and/or end a treatment	effleurage
which type of water is generally preferred for shampooing	soft
when brushing the clients hair you should begin	from the ends first, then toward scalp
which type of bristles are recommended for hair brushed	natural
what massage movement involves light or heavy kneading and rolling of the muscle	petrissage
the type of cape that is used designing and sculpting services on dry hair is made of	cloth
what is not true about draping	performed after shampooing is complete
before applying the water stream to a clients scalp when shampooing, always	monitor the water temp
what statement about hard water is true	hard water does not allow shampoo to lather freely
scalp massage involves movements performed on the scalp to relax the muscles and increase	blood circulation
avoid performing a scalp treatment when	immediately prior to a chemical service
the capes used for shampooing, wet hair sculpting, designing and chemical services are made of plastic or	waterproof material
of the basic massage movements, which stimulates the production of natural oil	petrissage
what type of hair is likely to tangle more easily	chemically treated hair
what shampoo product cleans hair with either soft or hard water	soapless
what type of conditioner displaces excess moisture, providing the hair more body	body building
what items would be discarded following the shampoo service	neck strip
how should you monitor the temperature of the water during rinsing	by keeping one finger in the water stream
the statement would occur during the consult service essential	"how frequently do you shampoo your hair"
the shampoo that is effective for cleaning wigs and hairpieces are	liquid dry
the shampoo product that deposits protein fragments along the hair shaft is	strengthening protein additive
which product provides soothing scents and allows fluid movement on the scalp	essential oil
what is considered the appropriate water pressure for rinsing during shampoo service	moderate to strong
what statement describes a technique for scalp massage	behind the earlobes
what type of conditioner closes the cuticle after a color service to prevent the color from fading	acid-balance
what would not be considered a contraindicaiton	a healthy scalp
what shampoo is recommended for removing residue such as product buildup	clarifying
what step would be performed first during a shampoo service	position cape on the outside of the shampoo chair
perform scalp massage movements starting at	the front hairline
never use firm scalp manipulations when shampoo is to be followed by	any kind of chemical service
what step would occur last when performing a wet hair service inclusive of draping, shampooing and conditioning	applying shampoo
at what point should the condition of the clients hair and scalp be examined when performing a shampoo	before shampooing the hair

Created by: Brooke_Allyce

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