| MAS | magic angle spinning; Manifest Anxiety Scale; maximum average score; McCune-Albright syndrome; mecon... |
|---|---|
| MDM | medical decision making; mid-diastolic murmur; minor determinant mix [penicillin] |
| MGL | minor glomerular lesion |
| MIHA | minor histocompatibility antigen |
| MIKA | minor karyotype abnormalities |
| tooth bud | The primordial structures from which a tooth is formed; the enamel organ, the dental papilla, and the dental sac enclosing them. (05 Mar 2000) |
|---|---|
| end bud | The rapidly proliferating mass of cells at the caudal extremity of the embryo; remnant of the primitive node. Synonym: end bud. (05 Mar 2000) |
| ureteric bud | The primordial cellular outgrowth from the mesonephric duct that gives rise to the epithelial lining of the ureter, of the pelvis, and calyces of the kidney, and of the straight collecting tubules. Synonym: ureteric bud. (05 Mar 2000) |
| limb bud | The limbs of vertebrates start as outpushings of mesenchyme surrounded by a simple epithelium. The distal region is referred to as the progress zone. There has been extensive study of positional information within the limb bud that determines, for example: the proximal distal pattern of bone development and the anterior posterior specification of digits. (18 Nov 1997) |
| liver bud | The primordial cellular diverticulum of the embryonic foregut endoderm that gives rise to the parenchyma of the liver. (05 Mar 2000) |
| lung bud | The endodermal lung primordium which will give rise to the epithelial lining of the respiratory tract. Synonym: lung bud. (05 Mar 2000) |
| ala minor ossis sphenoidalis | One of a bilateral pair of triangular, pointed plates extending laterally from the anterolateral body of the sphenoid bone. Forming the posteriormost portion of the floor of the anterior cranial fossa, their sharp posterior edge forms the sphenoidal ridge separating anterior and middle cranial fossae. The medial end of the lesser wing attaches to the body by means of two pedicles, thus forming the optic canal. The wing itself forms the superior margin of the supraorbital fissure. Synonym: ala minor ossis sphenoidalis, ala orbitalis, Ingrassia's apophysis, Ingrassia's wing. (05 Mar 2000) |
| annulus iridis minor | The narrow inner zone of the iris. Synonym: annulus iridis minor. (05 Mar 2000) |
| aphthae minor | <dermatology> Roundish pearl-coloured specks or flakes in the mouth, on the lips, etc, terminating in white sloughs, better known as thrush and the specks are called aphthae. Synonym: thrush, candidiasis. Origin: Sing. Of Aphthae. L, fr. Gr. (mostly in pl, Hipp) an eruption, thrush, fr. To set on fire, inflame. (25 Jun 1999) |
| arteria palatina minor | <anatomy, artery> One of several posterior branches of the descending palatine in the greater palatine canal, distributed to the soft palate and tonsil. Synonym: arteria palatina minor. (05 Mar 2000) |
| camera oculi minor | 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) |
| variola minor | A mild form of smallpox caused by a less virulent strain of the virus. Synonym: Cuban itch, Kaffir pox, milkpox, pseudosmallpox, pseudovariola, variola minor, West Indian smallpox, whitepox. Origin: Pg. Alastrar, to scatter over (05 Mar 2000) |
| papilla duodeni minor | The site of the opening of the accessory pancreatic duct into the duodenum, located anterior to and slightly superior to the major papilla. Synonym: papilla duodeni minor, Santorini's minor caruncle. Nerve papilla, one of the papillae in the dermis containing a tactile corpuscle or other form of end organ. Synonym: neurothele. (05 Mar 2000) |
| vena azygos minor inferior | <anatomy, vein> Formed by the merger of the left ascending lumbar vein with the left subcostal vein or a communication from the inferior vena cava, it pierces the left crus of the diaphragm, ascends along the left side of the bodies of the lower thoracic vertebrae, opposite the eighth vertebra, crosses the midline behind the aorta, thoracic duct, and oesophagus, and empties into the azygos vein, sometimes in common with the accessory hemiazygos vein. Synonym: vena hemiazygos, vena azygos minor inferior. (05 Mar 2000) |
| vena azygos minor superior | <anatomy, vein> Formed by the union of the fourth to seventh left posterior intercostal veins, passes along the side of the bodies of the fifth, sixth, and seventh thoracic vertebrae, then crosses the midline behind the aorta, oesophagus, and thoracic duct, and empties into the azygos vein, sometimes in common with the hemiazygos vein. Synonym: vena hemiazygos accessoria, vena azygos minor superior. (05 Mar 2000) |