| MCL | maximum containment laboratory; medial collateral ligament; midclavicular line; midcostal line; mini... |
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| OALL | ossification of anterior longitudinal ligament |
| OPLL | ossification of posterior longitudinal ligament |
| PCL | pacing cycle length; persistent corpus luteum; plasma cell leukemia; posterior chamber lens; posteri... |
| PDL | pancreatic duct ligation; periodontal ligament; poorly differentiated lymphocyte; population doublin... |
| short palmar muscle | <anatomy, muscle> Origin, ulnar side of central portion of the palmar aponeurosis; insertion, skin of ulnar side of hand; action, wrinkles skin on medial side of palm; nerve supply, ulnar. Synonym: musculus palmaris brevis, short palmar muscle. (05 Mar 2000) |
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| short peroneal muscle | <anatomy, muscle> Origin, lower two-thirds of lateral surface of fibula; insertion, base of fifth metatarsal bone; action, everts foot; nerve supply, superficial peroneal. Synonym: musculus fibularis brevis, musculus peroneus brevis, short fibular muscle, short peroneal muscle. (05 Mar 2000) |
| short posterior ciliary artery | <anatomy, artery> One of approximately seven branches of the ophthalmic artery which pass around the optic nerve to supply the eyeball. Dividing into some 15-20 branches, they penetrate the sclera adjacent to the optic nerve, supplying the choroid and ciliary processes. Anastomoses: with central retinal artery and long and anterior ciliary arteries (at the ora serrata). Synonym: arteria ciliaris posterior brevis. (05 Mar 2000) |
| short process of malleus | A short projection from the base of the manubrium of the malleus, attached firmly to the drum membrane. Synonym: processus lateralis mallei, processus brevis, short process of malleus, tuberculum mallei. (05 Mar 2000) |
| short radial extensor muscle of wrist | <anatomy, muscle> Origin, lateral epicondyle of humerus; insertion, base of third metacarpal bone; action, extends and abducts wrist radialward; nerve supply, radial. Synonym: musculus extensor carpi radialis brevis, short radial extensor muscle of wrist. (05 Mar 2000) |
| short rib-polydactyly syndrome | <syndrome> A syndrome inherited as an autosomal recessive trait and incompatible with life. The main features are narrow thorax, short ribs, scapular and pelvic dysplasia, and polydactyly. (12 Dec 1998) |
| short root of ciliary ganglion | A branch of the oculomotor nerve supplying parasympathetic preganglionic nerve fibres to the ciliary ganglion. Synonym: radix parasympathica ganglii ciliaris, radix oculomotoria ganglii ciliaris, motor root of ciliary ganglion, oculomotor root of ciliary ganglion, radix brevis ganglii ciliaris, short root of ciliary ganglion. (05 Mar 2000) |
| short rotation energy plantation | Plantings established and managed under short-rotation intensive culture practices. (05 Dec 1998) |
| short rotation intensive culture | Intensive management and harvesting at 2 to 10 year intervals of cycles of specially selected fast- growing hardwood species for the purpose of producing wood as an energy feedstock. (05 Dec 1998) |
| short saphenous nerve | <anatomy, nerve> A branch of the tibial nerve which supplies sensory innervation to parts of the lower leg and foot. (12 Dec 1998) |
| short saphenous vein | <anatomy, vein> Arises on the lateral side of the foot from a union of the dorsal vein of the little toe with the dorsal venous arch, ascends behind the lateral malleolus, along the lateral border of the calcanean tendon and then through the middle of the calf to the lower portion of the popliteal space where it empties into the popliteal vein. Synonym: vena saphena parva, short saphenous vein. (05 Mar 2000) |
| short sight | <ophthalmology> That error of refraction in which rays of light entering the eye parallel to the optic axis are brought to a focus in front of the retina, as a result of the eyeball being too long from front to back (axial myopia) or of an increased strength in refractive power of the media of the eye (index myopia). Also called nearsightedness, because the near point is less distant than it is in emmetropia with an equal amplitude of accommodation. Origin: Gr. Myein = to shut (18 Nov 1997) |
| short-term exposure limit | The maximum concentration of a chemical to which workers may be exposed continuously for up to 15 minutes without danger to health or work efficiency and safety. (05 Mar 2000) |
| short-term memory | <psychology> Temporary storage of information for a few seconds to hours, as opposed to long-term memory which refers to material stored for days, years, or a lifetime. (12 Dec 1998) |
| short TI inversion recovery | An inversion recovery sequence that uses a short inversion time, about 100 ms., between 180 |