| BII | beat inclusion index; Billroth II [operation]; butanol-insoluble iodine |
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| BOR | basal optic root; before time of operation; bowels open regularly; branchio-oto-renal [syndrome] |
| HAZWOPER | Hazardous Waste Operation and Emergency Response [of OSHA] |
| OP | occipitoparietal; occipitoposterior; occiput posterior; octapeptide; olfactory peduncle; opening pre... |
| op | operation; operator |
| Hunter's membrane | The mucous membrane of the pregnant uterus that has already undergone certain changes, under the influence of the ovulation cycle, to fit it for the implantation and nutrition of the ovum; so-called because the membrane is cast off after labour. Synonym: membrana decidua, caduca, decidua, Hunter's membrane. (05 Mar 2000) |
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| Hunter's syndrome | <syndrome> An error of mucopolysaccharide metabolism characterised by deficiency of iduronate sulfatase, with excretion of dermatan sulfate and heparan sulfate in the urine; clinically similar to Hurler's syndrome but distinguished by less severe skeletal changes, no corneal clouding, and X-linked recessive inheritance. Synonym: type II mucopolysaccharidosis. (05 Mar 2000) |
| Hunter syndrome | <syndrome> A recessive mucopolysaccharidosis, also designated mucopolysaccharidosis II, caused by a deficiency of the enzyme iduronate sulphate sulphatase which breaks down dermatan sulphate and heparen sulphate and consequently, the mucopolysaccharides accumulate in the cells of the body and cause damage. Symptoms are treated as they appear. Hunter syndrome is the most common of the mucopolysaccharide disorders. In its severe form this X-linked disease presents with coarse facial features, short stature, skeletal dysplasia, retinitis pigmentosa, hepatosplenomegaly, neurologic deterioration, and death in childhood. It is often distinguished clinically from Hurler syndrome by the absence of corneal clouding. Milder forms allow for survival to adulthood with minimal neurologic problems. Patients have the two types of sulphates in their urine. A variety of point mutations, splicing defects and deletions have been found in the gene, with full deletions causing the most severe disease. at present there is no cure. Inheritance: sex-linked (X chromosome). (29 Dec 1997) |
| Hunter, William | <person> Scottish anatomist and obstetrician, 1718-1783. See: Hunter's ligament, Hunter's line, Hunter's membrane. (05 Mar 2000) |
| Hunter, William A | <person> English pathologist, 1861-1937. See: Hunter's glossitis. (05 Mar 2000) |
| abdominal canal | A passage in the lower anterior abdominal wall which in the male allows passage of the spermatic cord and in the female contains the round ligament. Because of the weakness it creates in the abdominal wall, it is the most frequent site for a hernia. (12 Dec 1998) |
| accessory canal | A channel leading from the root pulp laterally through the dentin to the periodontal tissue; may be found anywhere in the tooth root, but is more common in the apical third of the root. Synonym: lateral canal. (05 Mar 2000) |
| adductor canal | The space in middle third of the thigh between the vastus medialis and adductor muscles, converted into a canal by the overlying sartorius muscle. It gives passage to the femoral vessels and saphenous nerve, ending at the adductor hiatus. Synonym: canalis adductorius, Hunter's canal, subsartorial canal. (05 Mar 2000) |
| Alcock's canal | The space within the obturator internis fascia lining the lateral wall of the ischiorectal fossa that transmits the pudendal vessels and nerves. Synonym: canalis pudendalis, Alcock's canal. (05 Mar 2000) |
| alimentary canal | <anatomy> The digestive tract. (27 Sep 1997) |
| anal canal | The terminal portion of the alimentary canal; it extends from the pelvic diaphragm to the anal orifice. Synonym: canalis analis. (05 Mar 2000) |
| anterior condyloid canal of occipital bone | The canal through which the hypoglossal nerve emerges from the skull. Synonym: canalis hypoglossalis, anterior condyloid canal of occipital bone, anterior condyloid foramen. (05 Mar 2000) |
| archenteric canal | Invagination of the blastopore into the notochordal process to form a cavity. See: neurenteric canal. Synonym: notochordal canal. (05 Mar 2000) |
| Arnold's canal | <anatomy, nerve> The small opening in the petrous bone lateral to the hiatus of facial canal that gives passage to the lesser petrosal nerve. Synonym: hiatus canalis nervi petrosi minoris, Arnold's canal, canalis nervi petrosi superficialis minoris. (05 Mar 2000) |
| arterial canal | Before birth, the blood headed from the heart (via the pulmonary artery) for the lungs is shunted away from the lungs and returned to the greatest of arteries (the aorta). The shunt is through a short vessel called the ductus arteriosus. When the shunt is open, it is said to be patent (pronounced pa'tent). The patent ductus arteriosus (PDA) usually closes at or shortly after birth and blood is permtted from that moment on to course freely to the lungs. If the ductus stays open (patent), flow reverses and blood from the aorta is shunted into the pulmonary artery and recirculated through the lungs. The PDA may close later spontaneously (on its own) or need to be ligated (tied off) surgically. (12 Dec 1998) |