| collum anatomicum humeri | A groove separating the head of the humerus from the tuberosities, giving attachment to the articular capsule. Synonym: collum anatomicum humeri. (05 Mar 2000) |
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| collum chirurgicum humeri | The narrow portion below the head and tuberosities. Synonym: collum chirurgicum humeri. (05 Mar 2000) |
| collum costae | The flattened portion of a rib between the head and the tuberosity. Synonym: collum costae. (05 Mar 2000) |
| collum dentis | The slightly constricted part of a tooth, between the crown and the root. Synonym: cervix dentis, cervical margin of tooth, cervical zone of tooth, collum dentis, dental neck. (05 Mar 2000) |
| collum distortum | <neurology> A wry neck, a contracted state of the cervical muscles, producing twisting of the neck and an unnatural position of the head. Origin: L. Tortus = twisted, collum = neck (18 Nov 1997) |
| collum femoris | A short, constricted, strong bar projecting at an obtuse angle (about 125 |
| collum fibulae | The slightly constricted region between the head and body of the fibula. Synonym: collum fibulae. (05 Mar 2000) |
| collum folliculi pili | The narrowed part of the hair follicle between the hair bulb and the surface of the skin. Synonym: collum folliculi pili. (05 Mar 2000) |
| collum glandis penis | A constriction behind the corona glandis of the penis. Synonym: collum glandis penis. (05 Mar 2000) |
| collum humeri | See: anatomical neck of humerus, surgical neck of humerus. (05 Mar 2000) |
| collum mallei | The constricted portion of the malleus between the head and the manubrium. Synonym: collum mallei. (05 Mar 2000) |
| collum mandibulae | The constricted portion of the condylar process below the head of the mandible. Synonym: collum mandibulae. (05 Mar 2000) |
| collum ossis femoris | A short, constricted, strong bar projecting at an obtuse angle (about 125 |
| collum radii | The narrow part of the shaft just below the head. Synonym: collum radii. (05 Mar 2000) |
| collum scapulae | A slight constriction marking the separation of that portion bearing the glenoid cavity and coracoid process from the remainder of the scapula. Synonym: collum scapulae. (05 Mar 2000) |