front 1 tricology | back 1 technical name for the study of hair |
front 2 follicle | back 2 the tube like "pocket" that hair grows from also known as a root sheath, determines curl pattern |
front 3 papilla | back 3 filled with capillaries that supply nourishment to cells around it |
front 4 hair bulb | back 4 the part of the hair follicle at the base of the hair that produces new hair and grows hair |
front 5 hair fiber | back 5 portion of hair that extends above the skin's surface |
front 6 anagen stage | back 6 active growing stage, attached root sheath 2-6 years |
front 7 catagen stage | back 7 brief transitional stage, cell division stops, a few weeks |
front 8 telogen stage | back 8 resting period, no attached root sheath, hair falls out |
front 9 kerantinization | back 9 process of cells changing shape, drying out and forming keratin protein |
front 10 cuticle | back 10 outer layer of hair shaft, made up of overlapping transparent cells |
front 11 cortex | back 11 2nd layer of hair consisting of unique structures that give the hair most of its pigment and strength (elasticity) |
front 12 medulla | back 12 central core of hair shaft, not in fine hair |
front 13 germinal matrix cells | back 13 undergo cell division, produce cells that ultimately keratinize and form the 3 layers of hair |
front 14 arrector pilli muscle | back 14 cause hair to stand on end when a person is either cold or scared |
front 15 sebaceous gland | back 15 produce sebum to prevent hair and skin form becoming too dry |
front 16 sebum | back 16 oil, mixes with perspiration (sweat) to form the acid mantle |
front 17 acid mantle | back 17 protects cuticle of hair fiber and maintains the natural p.H. of hair and skin |
front 18 elasticity | back 18 strength of hair, ability to stretch |
front 19 porosity | back 19 ability to absorb moisture |
front 20 density | back 20 number of active hair follicles per square inch on the scalp |
front 21 texture | back 21 degree of fineness or coarseness in the hair fiber |
front 22 melanin | back 22 found in cortex |
front 23 melanoctyes | back 23 produce melanosomes, which contain the pigment melanin |
front 24 eumelanin | back 24 melanin that is black/brown |
front 25 pheomelanin | back 25 melanin that is red/yellow |
front 26 gray hair | back 26 reduced melanin in cortex, reffered to as mottled hair, grows form papilla with gray color |
front 27 pityriasis capitis simplex | back 27 dry dandruff, disorder, dry flakes which can appear translucent |
front 28 peduculosis capitis | back 28 disorder, infestation of head lice causing itching and eventual infection |
front 29 alopecia areata | back 29 autoimmune disease, sudden loss of hair in round or irregular patches |
front 30 mottled hair | back 30 gray hair |
front 31 frontalis | back 31 extends from the forehead to the top of the skull, raises the eyebrows or draws the scalp forward |
front 32 occipitalis | back 32 at the nape of the neck, draws the scalp back |
front 33 platysma | back 33 extends from the tip of the chin to the shoulders and chest, draws the lower lip and corner of the mouth sideways and down, partially opens the mouth, as in surprise or fright |
front 34 epicranius | back 34 lifts the eyebrows and the upper eyelid |
front 35 temporalis | back 35 above and infront of the ear, opening and closing the jaw, as in chewing |
front 36 sterno cleido mastoid | back 36 extends along the side of the neck from the ear to the collarbones, causes the head to move from side to side and up and down, nodding yes or no |
front 37 nasalis | back 37 flares the nose |
front 38 masseter | back 38 covers the hinge of the jaw, aids in closing the jaw, chewing |
front 39 trapezius | back 39 aids in drawing the head back and elevating the shoulder blades |
front 40 orbicularis oculi | back 40 circles the eye socket, closes the eyelid |
front 41 orbicularis oris | back 41 circles the mouth, contracts, puckers and wrinkles the lips, as in kissing or whistling |
front 42 effleurage | back 42 a light, relaxing, smoothing, gentle stroking or circular movement |
front 43 petrissage | back 43 a light heavy kneading and rolling of the muscle |
front 44 tapotement | back 44 a light tapping or slapping movent by the fingertips |
front 45 friction | back 45 a circular or wringing movement with no gliding using the finger tips |
front 46 vibration | back 46 a shaking movement in the arms |