| CPSC | congenital paucity of secondary synaptic clefts [syndrome]; Consumer Products Safety Commission |
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| BCA | balloon catheter angioplasty; bicinchoninic acid; blood color analyzer; Blue Cross Association; bran... |
| BN | bladder neck; branchial neuritis; bronchial node; brown Norway [rat]; bulimia nervosa |
| BR | barrier reared [experimental animals]; baseline recovery; bathroom; bed rest; bedside rounds; biliru... |
| br | boiling range; brachial; branch; branchial; breath; brother |
| branchial clefts | A bilateral series of slitlike openings into the pharynx through which water is drawn by aquatic animals; in the walls of the cleft's are the vascular gill filaments that take up oxygen from the water passing through the cleft's; sometimes loosely applied to the branchial ectodermal grooves of mammalian embryos, which are imperforate, rudimentary homologues of complete gill clefts. Synonym: gill clefts. (05 Mar 2000) |
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| gill clefts | A bilateral series of slitlike openings into the pharynx through which water is drawn by aquatic animals; in the walls of the cleft's are the vascular gill filaments that take up oxygen from the water passing through the cleft's; sometimes loosely applied to the branchial ectodermal grooves of mammalian embryos, which are imperforate, rudimentary homologues of complete gill clefts. Synonym: gill clefts. (05 Mar 2000) |
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| Maurer's clefts | Finely granular precipitates or irregular cytoplasmic particles that usually occur diffusely in red blood cells infected with the trophozoites of Plasmodium falciparum, occasionally those of P. Malariae; rarely observed in P. Falciparum blood smears because its trophozoites seldom are seen in peripheral blood. Synonym: Maurer's clefts. (05 Mar 2000) |
| Schmidt-Lanterman clefts | Funnel-shaped interruptions in the regular structure of the myelin sheath of nerve fibres, formerly interpreted as actual breaks in the sheath but shown by electron microscopy to correspond each to a strand of cytoplasm locally separating the two otherwise fused oligodendroglial (or, in peripheral nerves, Schwann cell) membranes composing the myelin sheath. Synonym: Lanterman's incisures, Schmidt-Lanterman clefts. (05 Mar 2000) |
| interneuromeric clefts | Cleft's between the neuromeric or segmental elevations in the primitive rhombencephalon. (05 Mar 2000) |
| branchial | <anatomy> Of or pertaining to branchiae or gills. Branchial arches, the bony or cartilaginous arches which support the gills on each side of the throat of fishes and amphibians. Branchial clefts, the openings between the branchial arches through which water passes. Source: Websters Dictionary (01 Mar 1998) |
| branchial apparatus | The aggregate of the pharyngeal arches, pouches, clefts, and membranes seen in the developing embryo of vertebrates. (05 Mar 2000) |
| branchial arches | Typically, 6 arch's in vertebrates; in the lower vertebrates, they bear gills; in the higher vertebrates, they appear transiently and give rise to specialised structures in the head and neck. Synonym: pharyngeal arches, visceral arches. (05 Mar 2000) |
| branchial cartilages | Cartilage's developing within the vertebrate or embryonic branchial arches; they form the cartilaginous viscerocranium. Synonym: pharyngeal cartilages. (05 Mar 2000) |
| branchial cleft cyst | Also called a branchial cyst, this is a cavity that is a remnant from embryologic development present at birth in one side of the neck just in front of the large angulated muscle on either side (the sternocleidomastoid muscle). The cyst may not be recognised until adolescence as it enlarges its oval shape. Sometimes it develops a sinus or drainage pathway to the surface of the skin from which mucus can be expressed. Total surgical excision is the treatment of choice. Recurrence is not expected. (12 Dec 1998) |
| branchial cyst | Also called a branchial cleft cyst, this is a cavity that is a remnant from embryologic development present at birth in one side of the neck just in front of the large angulated muscle on either side (the sternocleidomastoid muscle). The cyst may not be recognised until adolescence as it enlarges its oval shape. It may develop a sinus or drainage pathway to the surface of the skin from which mucus can be expressed. Total surgical excision is the treatment of choice. Recurrence is not expected. (12 Dec 1998) |
| branchial efferent column | A column of gray matter in the brainstem of the embryo, represented in the adult by the nucleus ambiguus and the motor nuclei of the trigeminal and facial nerves. (05 Mar 2000) |
| branchial fissure | A persistent branchial cleft. (05 Mar 2000) |
| branchial fistula | A congenital fistula in the neck resulting from incomplete closure of a branchial cleft. (05 Mar 2000) |
| branchial groove | An external embryonic groove between contiguous branchial arches. See: branchial clefts. (05 Mar 2000) |
| branchial mesoderm | Mesoderm surrounding the primitive stomodeum and pharynx; it develops into the pharyngeal arches. (05 Mar 2000) |
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