| posterior cerebral artery | <anatomy, artery> Formed by the bifurcation of the basilar artery; it passes around the cerebral peduncle to reach the medial aspect of the hemisphere; for descriptive purposes it is divided into three parts: 1) the precommunical part (P1 segment of clinical terminology), the part before the junction with the posterior communicating artery, supplying parts of the thalamus, hypothalamus, and midbrain; 2) the postcommunical part (P2), supplying the thalamus, cerebral peduncles, and the choroid plexuses of the lateral and third ventricles; and 3) the terminal or cortical part, supplying the cortex of the temporal (P3) and occipital (P4) lobes. Synonym: arteria cerebri posterior. (05 Mar 2000) |
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| posterior cerebral commissure | A thin band of white matter, crossing from side to side beneath the habenula of the pineal body and over the aditus ad aqueductum cerebri; it is largely composed of fibres interconnecting the left and right pretectal region and related cell groups of the midbrain; dorsally, it marks the junction of the diencephalon and mesencephalon. Synonym: posterior cerebral commissure. (05 Mar 2000) |
| posterior cervical intertransversarii muscles | Origin, lateral part: posterior tubercle of cervical transverse process; medial part: transverse process; insertion, corresponding parts of next superior transverse process; action, abducts cervical vertebrae; nerve supply, lateral part: ventral primary rami of cervical spinal nerves; medial part: dorsal primary rami of cervical spinal nerves. Synonym: musculi intertransversarii posteriores cervicis, posterior cervical intertransverse muscles. (05 Mar 2000) |
| posterior cervical intertransverse muscles | Origin, lateral part: posterior tubercle of cervical transverse process; medial part: transverse process; insertion, corresponding parts of next superior transverse process; action, abducts cervical vertebrae; nerve supply, lateral part: ventral primary rami of cervical spinal nerves; medial part: dorsal primary rami of cervical spinal nerves. Synonym: musculi intertransversarii posteriores cervicis, posterior cervical intertransverse muscles. (05 Mar 2000) |
| posterior chamber of eye | The ringlike space, filled with aqueous humor, between the iris/pupil anteriorly and the lens and ciliary body posteriorly. Synonym: camera posterior bulbi, camera oculi minor, camera oculi posterior. (05 Mar 2000) |
| posterior choroidal artery | <anatomy, artery> One of several choroid branches of the P2 segment of the posterior cerebral artery that supply the choroid plexus of the body of the lateral ventricle and of the third ventricle. Synonym: arteria choroidea posterior. (05 Mar 2000) |
| posterior choroiditis | Disseminated choroiditis restricted to the central choroid. (05 Mar 2000) |
| posterior circumflex humeral artery | <anatomy, artery> Origin, axillary; distribution, muscles and structures of shoulder joint; anastomoses, anterior circumflex humeral, suprascapular, thoracoacromial, and profunda brachii. Synonym: arteria circumflexa humeri posterior, posterior humeral circumflex artery. (05 Mar 2000) |
| posterior column | The pronounced, dorsolaterally oriented ridge of gray matter in each lateral half of the spinal cord, corresponding to the posterior or dorsal horn appearing in transverse sections of the cord. Synonym: columna posterior, dorsal column of spinal cord, posterior column of spinal cord. (05 Mar 2000) |
| posterior column cordotomy | Division of the posterior column of the spinal cord. (05 Mar 2000) |
| posterior column of spinal cord | The pronounced, dorsolaterally oriented ridge of gray matter in each lateral half of the spinal cord, corresponding to the posterior or dorsal horn appearing in transverse sections of the cord. Synonym: columna posterior, dorsal column of spinal cord, posterior column of spinal cord. (05 Mar 2000) |
| posterior communicating artery | <anatomy, artery> Origin, internal carotid; distribution, optic tract, crus cerebri, interpeduncular region, and hippocampal gyrus; anastomoses, with posterior cerebral to form the cerebral arterial circle (circle of Willis). Synonym: arteria communicans posterior. (05 Mar 2000) |
| posterior condyloid foramen | The inconstant opening through the occipital bone posterior to the condyle on each side that transmits the occipital emissary vein. Synonym: canalis condylaris, posterior condyloid foramen. (05 Mar 2000) |
| posterior conjunctival artery | <anatomy, artery> One of a series of branches from the arterial arches of the upper and lower eyelids that supplies the conjunctiva. Synonym: arteria conjunctivalis posterior, conjunctival arteries. (05 Mar 2000) |
| posterior cord of brachial plexus | In the brachial plexus, the bundle of nerve fibres formed by the posterior divisions of the upper, middle and lower trunks which lies posterior to the axillary artery; it gives rise to the upper and lower subscapular and thoracodorsal nerves, terminates by dividing into the axillary, and radial nerves. Synonym: fasciculus posterior plexus brachialis. (05 Mar 2000) |
| postnuclear cap |
a broad band encircling the postacrosomal region of the nucleus of a spermatozoon.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| postoperative parotitis |
an acute parotitis due to infection (usually with staphylococci) of the parotid gland following a surgical procedure; it is marked by rapid onset, frequently with severe pain and rapid swelling of the glands, and by trismus, low-grade fever, headache, malaise, and leukocytosis. It affects generally debilitated patients, usually middle-aged or older, suffering from dehydration, suppression of salivary secretion, vomiting, or mouth-breathing.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| postpartum alopecia |
telogen effluvium occurring shortly after parturition.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| postcostal anastomosis |
a longitudinal linkage of the seven highest intersegmental arteries in the embryo that gives rise to the vertebral artery.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| postprimary tuberculosis |
pulmonary tuberculosis that is typical of a fresh infection but in which the person has actually had an earlier, probably subclinical, attack; it is distinguished by caseation and cavitation with healing that results in fibrosis. Called also reactivation t., secondary t., and formerly adult t.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| post | someone who rides the near horse of a pair in order to guide the horses pulling a carriage (especially a carriage without a coachman) |
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| post | an artist of the Postimpressionist school who revolted against impressionism |
| post | the transmission of a letter |
| post | (bookkeeping) a listing on the company's records |
| post | a sign posted in a public place as an advertisement |
| post | a man who delivers the mail |
| post | a cancellation mark stamped on mail by postal officials |
| post | stamp with a postmark to indicate date and time of mailing |
| post | the person in charge of a post office |
| post | the official in charge of the national postal service |
| post | infant born after 42 weeks of gestation |
| post | subsequent to menopause |