| head movements | Voluntary or involuntary motion of head that may be relative to or independent of body; includes animals and humans. (12 Dec 1998) |
|---|---|
| head-nodding | Head movements associated with congenital nystagmus, spasmus nutans, and miner's nystagmus. Synonym: head tremors. (05 Mar 2000) |
| head nurse | A nurse administratively responsible for a designated hospital unit on a 24 hour basis. Synonym: charge nurse. (05 Mar 2000) |
| head of epididymis | The upper and larger extremity of the epididymis. Synonym: caput epididymidis, caput epididymis, globus major. (05 Mar 2000) |
| head of femur | The hemispheric articular surface at the upper extremity of the thigh bone. Synonym: caput ossis femoris, caput femoris, head of thigh bone. (05 Mar 2000) |
| head of fibula | The superior extremity of the fibula, which articulates by a facet with the undersurface of the lateral condyle of the tibia. Synonym: caput fibulae, upper extremity of fibula. (05 Mar 2000) |
| head of humerus | The upper rounded extremity fitting into the glenoid cavity of the scapula. Synonym: caput humeri. (05 Mar 2000) |
| head of malleus | The rounded portion of the malleus articulating with the body of the incus. Synonym: caput mallei. (05 Mar 2000) |
| head of mandible | The expanded articular portion of the condylar process of the mandible. Synonym: caput mandibulae. (05 Mar 2000) |
| head of metacarpal bone | The expanded distal end of a metacarpal that articulates with the proximal phalanx of the same digit. Synonym: caput ossis metacarpalis. (05 Mar 2000) |
| head of metatarsal bone | The expanded distal end of a metatarsal bone that articulates with the proximal phalanx of the same digit. Synonym: caput ossis metatarsalis. (05 Mar 2000) |
| head of pancreas | That portion of the pancreas lying in the concavity of the duodenum. Synonym: caput pancreatis. (05 Mar 2000) |
| head of phalanx | The rounded articular surface at the distal end of the proximal and middle phalanx of each finger and toe. Synonym: caput phalangis, trochlea phalangis. (05 Mar 2000) |
| head of rib | The rounded medial extremity of a rib which, except for ribs 1, 10, 11, and 12, articulates by two facets with the bodies of two contiguous vertebrae. Synonym: caput costae. (05 Mar 2000) |
| head of stapes | The portion of the stapes that articulates with the lenticular process of the incus. Synonym: caput stapedis. (05 Mar 2000) |