What's the difference between hair and skin?

Hair


Definition:

  • (n.) The collection or mass of filaments growing from the skin of an animal, and forming a covering for a part of the head or for any part or the whole of the body.
  • (n.) One the above-mentioned filaments, consisting, in invertebrate animals, of a long, tubular part which is free and flexible, and a bulbous root imbedded in the skin.
  • (n.) Hair (human or animal) used for various purposes; as, hair for stuffing cushions.
  • (n.) A slender outgrowth from the chitinous cuticle of insects, spiders, crustaceans, and other invertebrates. Such hairs are totally unlike those of vertebrates in structure, composition, and mode of growth.
  • (n.) An outgrowth of the epidermis, consisting of one or of several cells, whether pointed, hooked, knobbed, or stellated. Internal hairs occur in the flower stalk of the yellow frog lily (Nuphar).
  • (n.) A spring device used in a hair-trigger firearm.
  • (n.) A haircloth.
  • (n.) Any very small distance, or degree; a hairbreadth.

Example Sentences:

  • (1) Cook, who has postbox-red hair and a painful-looking piercing in his lower lip, was now on stage in discussion with four fellow YouTubers, all in their early 20s.
  • (2) The surface of all cells was covered by a fuzzy coat consisting of fine hairs or bristles.
  • (3) We have isolated a murine cDNA clone, pCAL-F559, for the calcium-binding protein calcyclin by differential screening of a cDNA library made from RNA isolated from hair follicles of 6-d-old mice.
  • (4) White hair bulbs which demonstrated no TH activity formed 2SCD, but not 5SCD.
  • (5) Isolated outer hair cells from the organ of Corti of the guinea pig have been shown to change length in response to a mechanical stimulus in the form of a tone burst at a fixed frequency of 200 Hz (Canlon et al., 1988).
  • (6) We have reported on a simple and secure method of tying up hair during transplantation surgery for alopecia.
  • (7) Bone age has been analyzed mixed-longitudinally in a subsample of 370 patients (660 observations) and showed a slight retardation at all ages between 6 and 13 yr. Development of pubic hair of 91 subjects analyzed cross-sectionally was definitely retarded when compared to adequate reference data.
  • (8) Tumors were induced in athymic, T-cell-deficient nude mice and in syngeneic normal haired mice by treatment with low doses of 3-methylcholantrene (MCA).
  • (9) As I looked further, I saw that there was blood and hair and what looked like brain tissue intermingled with that to the right area of her skull."
  • (10) A new method of staining the keratin filament matrix allowing a visualization of the filaments in cross section of hair fibres has been developed.
  • (11) However, in subjects with alopecia there was no such difference and the growth rate of all the hairs showed a continuous distribution.
  • (12) No infection threads were found to penetrate either root hairs or the nodule cells.
  • (13) After 7 days, various stages of sensory hair degeneration could be observed.
  • (14) This review of androgenetic alopecia (AA) in women provides a summary of hair physiology and biochemistry, a general discussion of AA, and a brief description of other types of hair loss in women.
  • (15) Subungual hair penetration appears to be much less common.
  • (16) Steep longitudinal and transverse gradients of glycogen are known to exist in the organ of Corti of the guinea pig, with preferential accumulation in the outer hair cells of the apical turns.
  • (17) Of four normal tissues assessed, two (hair follicles and tissues responsible for development of leg contractures) showed no change in radioresponse after treatment with indomethacin, one (hematopoietic tissue) exhibited radioprotection, and one (jejunum) exhibited slight radiosensitization (enhancement factor, 1.12).
  • (18) On the other hand, the total number of missing hair cells, irrespective of location, was a good, general indicator of the hearing capacity in a given ear.
  • (19) The objective was to determine whether the parent axonal impulse train elicited by dual-hair stimulation was due to a temporal combining ("mixing"; Fukami, 1980) of the impulse trains elicited in the parent axons by the same stimulation to each hair alone.
  • (20) In addition to descriptions of variants of the root appearance for hairs removed from follicles in the three classical growth phases, several other commonly occurring root configurations are described and illustrated with photomicrographs.

Skin


Definition:

  • (n.) The external membranous integument of an animal.
  • (n.) The hide of an animal, separated from the body, whether green, dry, or tanned; especially, that of a small animal, as a calf, sheep, or goat.
  • (n.) A vessel made of skin, used for holding liquids. See Bottle, 1.
  • (n.) The bark or husk of a plant or fruit; the exterior coat of fruits and plants.
  • (n.) That part of a sail, when furled, which remains on the outside and covers the whole.
  • (n.) The covering, as of planking or iron plates, outside the framing, forming the sides and bottom of a vessel; the shell; also, a lining inside the framing.
  • (v. t.) To strip off the skin or hide of; to flay; to peel; as, to skin an animal.
  • (v. t.) To cover with skin, or as with skin; hence, to cover superficially.
  • (v. t.) To strip of money or property; to cheat.
  • (v. i.) To become covered with skin; as, a wound skins over.
  • (v. i.) To produce, in recitation, examination, etc., the work of another for one's own, or to use in such exercise cribs, memeoranda, etc., which are prohibited.

Example Sentences:

  • (1) The catheter must be meticulously fixed to the skin to avoid its movement.
  • (2) Elements in the skin therefore seemed to enhance nerve regeneration and function.
  • (3) This is a fascinating possibility for solving the skin shortage problem especially in burn cases.
  • (4) Blood flow decreased immediately after skin expansion in areas over the tissue expander on days 0 and 1 and returned to baseline levels within 24 hours.
  • (5) These findings suggest that clonidine transdermal disks lower blood pressure in hypertensive patients, but produce local skin lesions and general side effects.
  • (6) Currently, photodynamic therapy is under FDA-approved clinical investigational trials in the treatment of tumors of the skin, bronchus, esophagus, bladder, head and neck, and of gynecologic and ocular tumors.
  • (7) Immunofluorescent staining for HLA-DR showed dermal positivity in 12 of 13 involved- and 9 of 13 uninvolved-skin biopsy specimens from scleroderma patients, compared with only 1 of 10 controls.
  • (8) Blood flow was measured in leg and torso skin of conscious or anesthetized sheep by using 15-micron radioactive microspheres (Qm) and the 133Xe washout method (QXe).
  • (9) A similar interference colour appeared after incubating sections of rat skin with chymase.
  • (10) Peptides from this region bind to actin, act as mixed inhibitors of the actin-stimulated S1 Mg2(+)-ATPase, and influence the contractile force developed in skinned fibres, whereas peptides flanking this sequence are without effect in our test systems.
  • (11) This study was designed to examine the effect of the storage configuration of skin and the ratio of tissue-to-storage medium on the viability of skin stored under refrigeration.
  • (12) Somatostatin-like immunoreactivity has been found to occur in nerve terminals and fibres of the normal human skin using immunohistochemistry.
  • (13) We recommend analysing the urine for porphyrins in HIV-positive patients who have chronic photosensitivity of the skin.
  • (14) We investigated the incidence of skin cancer among patients who received high doses of PUVA to see whether such incidence increased.
  • (15) Attachment of the graft to the wound is similar with and without the addition of human basic fibroblast growth factor, a potent angiogenic agent, to the skin replacement before graft placement on wounds.
  • (16) In order to develop a sampling strategy and a method for analyzing the circadian body temperature pattern, we monitored estimates of the temperature in four ways using rectal, oral, axillary and deep body temperature from the skin surface every hour for 72 consecutive hours in 10 normal control subjects.
  • (17) It was shown that the antibiotic had low acute toxicity, did not cumulate and had no skin-irritating effect.
  • (18) Compliance during dehydration was 7.6 and 12.5% change in IFV per millimeter Hg fall in IFP (micropipettes) in skin and muscle, respectively, whereas compliance in subcutis based on perforated capsule pressure was 2.0% change in IFV per millimeter Hg.
  • (19) For the second propositus, a woman presenting with abdominal and psychiatric manifestations, the age of onset was 38 years; the acute attack had no recognizable cause; she had mild skin lesions and initially was incorrectly diagnosed as intermittent acute porphyria; the diagnosis of variegate porphyria was only established at the age of 50 years.
  • (20) 14 patients with painful neuroma, skin hyperesthesia or neuralgic rest pain were followed up (mean 20 months) after excision of skin and scar, neurolysis and coverage with pedicled or free flaps.