Bma Illustrated Medical Dictionary
into hair follicles or discharge directly on to the skin surface. They are most numerous on the scalp, face, and anus and are ab ...
between self-image and how others see one. Psychotherapytreats neurosis by changing a person’s self-image. self-injuryThe act of ...
environment and about the body’s inter- nal state, to the central nervous system. Information is collected by millions of sense ...
bacterial toxins are present in the blood. (See also bacteraemia.) Septicaemia usually arises through es- cape of bacteria from ...
develops. Symptoms usually clear up in a few days; antihistamine drugsmay hasten recovery. In severe cases, a corticosteroid dru ...
sexual desire, inhibitedLack of sexual desire or of the ability to become physi- cally aroused during sexual activity. sexual de ...
volume is reduced, blood vessels are abnormally widened, the heart’s action is weak, blood flow is obstructed, or there is a com ...
shuntAn abnormal or surgically created passage between two normally uncon- nected body parts. Shy–Drager syndromeA rare degener- ...
sievertA unit for measuring doses of ionizing radiation. (See radiation units). sightSee vision. sight, partialLoss of vision sh ...
lower forehead; 2 ethmoidal sinuses be- tween the eyes; 2 maxillary sinuses in the cheekbones; and the sphenoidal sinuses in the ...
sweat glands, sebaceous glands, blood and lymph vessels, and sensory receptors for pressure, temperature, and pain. skin allergy ...
to heal, or that would leave tethering or unsightly scars. A skin graft is often used in the treatment of burns or some- times f ...
of progressively greater “depth”, with slowing of brain activity. In REM sleep, the brain becomes more active; the eyes move rap ...
The injured arm may be supported horizontally or held elevated, depend- ing on the injury. slipped discSee disc prolapse. slippe ...
snake bitesMost snake bites are by non- venomous species. Venomous snakes are found mainly in the tropics; the only species nati ...
sodium picosulfateA stimulant laxative drug used to treat constipationand to empty the bowel prior to procedures such as X-ray, ...
spasmAn involuntary contraction of a muscle. Examples include hiccupsand tics. Disorders characterized by spasm in- clude trigem ...
Sperm are produced within the seminif- erous tubules of the testesand mature in the epididymis. Production and develop- ment of ...
spinal anaesthesiaInjection of an anaesthetic into the cerebrospinal fluid in the spinal canal to block pain sensa- tions before ...
Disc prolapsemay lead to pressure on a spinal nerve, causing pain. Injury to a nerve may lead to loss of sensation or movement i ...
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