| UD | ulcerative dermatosis; ulnar deviation; undetermined; underdeveloped; unit dose; urethral dilatation... |
|---|---|
| uln | ulna, ulnar |
| UMCV-TO | ulnar motor conduction velocity across thoracic outlet |
| UN | ulnar nerve; undernourished; unilateral neglect; urea nitrogen; urinary nitrogen |
| UNCV | ulnar nerve conduction velocity |
| ulnar head | The name applied to a head of origin of a forearm muscle arising from the ulna. Nomina Antomica lists ulnar heads (caput ulnare...) of the following: 1) flexor carpi ulnaris muscle (... Musculi flexoris carpi ulnaris ); 2) pronator teres muscle (... Musculi pronatoris teritis ). Synonym: caput ulnare. (05 Mar 2000) |
|---|---|
| ulnar margin of forearm | An imaginary line extrapolated from the medial epicondyle of the humerus to the styloid process of the ulna, forming a border between the anterior and posterior surfaces. Synonym: margo medialis antebrachii, margo ulnaris antebrachii, ulnar margin of forearm. (05 Mar 2000) |
| ulnar nerve | <anatomy, nerve> A major nerve of the upper extremity. In humans, the fibres of the ulnar nerve originate in the lower cervical and upper thoracic spinal cord (usually c7 to t1), travel via the medial cord of the brachial plexus, and supply sensory and motor innervation to parts of the hand and forearm. (12 Dec 1998) |
| ulnar nerve compression syndrome | <syndrome> A condition caused by compression or entrapment of the ulnar nerve. It may involve both sensory and motor problems and most often results from compression or entrapment of the ulnar nerve at the elbow (cubital tunnel syndrome). Compression of the nerve may occur during normal activities or as a complication of general anaesthesia. (12 Dec 1998) |
| ulnar notch | The concave surface on the medial side of the distal end of the radius which articulates with the head of the ulna. Synonym: incisura ulnaris. (05 Mar 2000) |
| ulnar reflex | Pronation and adduction of the hand caused by tapping the styloid process of the ulna. Synonym: pronator reflex. (05 Mar 2000) |
| ulnar styloid erosions | <radiology> Seen in rheumatoid arthritis, related to: triangular fibrocartilage, prestyloid recess (of joint space), extensor carpi ulnaris tendon (12 Dec 1998) |
| ulnar variance | <radiology> Ulna minus variance ulna shorter than radius increased frequency of avascular necrosis of lunate associated with DISI, ulna plus variance ulna longer than radius increased stress on triangular fibrocartilage (12 Dec 1998) |
| ulnar veins | Venae comitantes of the ulnar artery, continuing from those of the supericial palmar arch and joining with those of the radial artery to form the brachial veins in the cubital fossa. Synonym: venae ulnares. (05 Mar 2000) |
| alveolar ridge | That portion of bone in either the maxilla or the mandible which surrounds and supports the teeth. (12 Dec 1998) |
| alveolar ridge augmentation | Preprosthetic surgery involving rib, cartilage, or iliac crest bone grafts, usually autologous, or synthetic implants for rebuilding the alveolar ridge. (12 Dec 1998) |
| apical ectodermal ridge | The layer of surface ectodermal cells at the apex of the embryonic limb bud; considered to exert an inductive influence on the condensation of underlying mesenchyme. (05 Mar 2000) |
| basal ridge | That portion of bone in either the maxilla or the mandible which surrounds and supports the teeth. (12 Dec 1998) |
| buccocervical ridge | A convexity within the cervical third of the buccal surface of molars. (05 Mar 2000) |
| buccogingival ridge | A distinct ridge on the buccal surface of a deciduous molar tooth, approximately 1.5 mm from the crown-root junction. (05 Mar 2000) |