Pivot Point Trichology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Trichology | Technical term for the study of hair
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| Hair bulb | The only part of the hair that is alive.
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| hair fiber | The part of the hair that extends beyond the skin. hair shaft.
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| hair strand | The part of the hair that extends beyond the skin. hair fiber
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| hair follicle | The shaft hair grows out of. The size of this determines the diameter of the hair. The shape of this determines if hair is straigh, wavy or cury.
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| basal layer | Cell division takes place.
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| Epicermis | Outermost layer of the skin.
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| Primitive hair germ | The cluster of cells at the basal layer of the epidermis
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| Dermal layer | Underlying or inner layer of the skin. contains connective tissues and a portion the hair follicle.
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| Hair root | Portion of hair that is inside the hair follicle under the skin's surface
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| Papilla | hair structure filled with capillaries that supplies
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| Keratinize | Cells change shape, dry out and form this protein: the cells are no longer alive.
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| Cuticle | overlapping transparent outer covering of the hair shaft.
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| Cortex | The second layer of the hair consisting of protein
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| Medulla | The central core of the hair: sometimes absent in fine hair
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| Sebacceous glands | oil glands
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| Sebum | secretion of fatty oil substance
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| Acid mantle | mixture of sebacceous glands (oil) and sudoriferous glands (sweat) to keep skin and hair soft and supple
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| Arrector pilli muscle | The muscle that couses hair to stand on end when scared or cold
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| anagen | Active or growing stage of hair
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| Catagen | Brief transitional stage of hair cycle in which cell dividion stops
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| Telogen | The resting stage of the hair cycle in which hair has no attached rooth sheat and falls out.
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| Cilia | Eyelash hair
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| melanin | Pigment that give hair and skin its color
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| Melanocytes | pigment producing cells
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| Eumelanin | pigment that gives hair brown or black color. The more present in hair, the darker hair is.
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| Pheomelanin | Pigment that gives hair its red color.
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| Albinism | Lack of produciton of the melanocytes
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| broken hair | results from improper brushing of hair.
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| split ends | brittle hair or trichoptilosis: cracks deep in the cutile into the cortex layer
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| matting | pilica polonica: tangled hair, as in excessive back combing
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| Nodules | Trichorrexis nodosa: knotted haiar with presnce of lumps or swelling alon the shaft: from vigorously rubbing as in towel drying
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| Canities | greying or white hair: loss of pigment as someone ages
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| ringed hair | alternating bands of grey and dark hair
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| hypertrichosis | abnormal coverage of hair on areas of the body usually covered in lanugo hair
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| moniletrix | beads or nodes formed on the hair shaft
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| Psoriasis | thick crusty patches of red irritated scalp
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| Dandruff | pityriasis: chronic scalp condition with excessive flaking
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| pityriasis capitis simplex | dry flakes attached to the scalp or hair
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| pityriasis steatoids | oily flakes combined with sebum
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| Tinea | Ringworm: red circular patches of small bilsters
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| tinea capitis | enlarged open hair follicles surrounded by red or black spots
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| tinea favosa | dry, yellow, encrusted areas on the scalp: shiny pink or odor
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| scabies | itch mites: red and watery: burrows under the skin
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| pediculosis capitis | head lice
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| postpartum alopecia | hair loss occurs after giving birth
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| alopecia areata | loss of hair in round or irregular patches: no obvious skin disorder.
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| telogen effluvium | Premature shedding of hair in the telogen (resting) phase of hair. caused by stress.
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