| buccal region | The region of the cheek, corresponding approximately to the outlines of the underlying buccinator muscle. Synonym: regio buccalis. (05 Mar 2000) |
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| calcaneal region | The region of the heel. Synonym: regio calcanea. (05 Mar 2000) |
| caribbean region | The area that lies between continental north and south america and comprises the caribbean sea, the west indies, and the adjacent mainland regions of southern mexico, central america, colombia, and venezuela. (12 Dec 1998) |
| variable region | <molecular biology> Those regions in the amino acid sequence of both the heavy and the light chains of immunoglobulins where there is considerable sequence variability from one immunoglobulin to other of the same class, in contrast to constant sequence (C) regions. The V regions are associated with the antigen binding areas. They contain hypervariable regions of particularly high sequence diversity. (18 Nov 1997) |
| mammary region | The region of the breast. Synonym: regio mammaria. (05 Mar 2000) |
| vertebral region | The central region of the back, corresponding to the underlying vertebral column. Synonym: regio vertebralis. (05 Mar 2000) |
| parietal region | The surface region of the head corresponding to the outlines of the underlying parietal bone. Synonym: regio parietalis capitis. (05 Mar 2000) |
| region | <anatomy> A plane area with more or less definite boundaries. (18 Nov 1997) |
| region of interest | In computed tomography or other computerised imaging, an interactively selected portion of the image, whose individual or average pixel values can be displayed numerically. (05 Mar 2000) |
| region of respiratory mucosa | The area commencing at the vestibule of the nose lined with respiratory mucosa; with the exception of the olfactory mucusa, it includes the entire nasal cavity. Synonym: regio respiratoria tunicae mucosae nasi, respiratory region of tunica mucosa of nose. (05 Mar 2000) |
| region, regulatory | See: Regulatory sequence. (12 Dec 1998) |
| regulatory region | <molecular biology> A DNA base sequence that controls gene expression. (14 Oct 1997) |
| pectoral region | The region of the chest demarcated by the outline of the pectoralis major muscle. See: pectoral region, regions of chest. Synonym: regio pectoralis. (05 Mar 2000) |
| mediterranean region | The mediterranean sea, the mediterranean islands, and the countries bordering on the sea collectively. (12 Dec 1998) |
| gluteal region | The region of the buttocks. Synonym: regio glutealis. (05 Mar 2000) |