| regio infraorbitalis | The region of the face below the orbit and alongside the nose on each side. Synonym: regio infraorbitalis. (05 Mar 2000) |
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| regio infrascapularis | The region of the back lateral to the vertebral region and below the scapula. Synonym: regio infrascapularis. (05 Mar 2000) |
| regio inguinalis | The topographical area of the inferior abdomen related to the inguinal canal, lateral to the pubic region. Synonym: regio inguinalis, groin, iliac region, inguen. (05 Mar 2000) |
| regio lateralis | The area of the abdomen on each side of the umbilical region between transpyloric plane and intertubercular or interspinous plane. Synonym: regio lateralis. (05 Mar 2000) |
| regio lumbalis | The region of the back lateral to the vertebral region and between the rib cage and the pelvis. Synonym: regio lumbalis. (05 Mar 2000) |
| regio mammaria | The region of the breast. Synonym: regio mammaria. (05 Mar 2000) |
| regio mentalis | The region of the chin. Synonym: regio mentalis. (05 Mar 2000) |
| regio nasalis | The region of the nose. Synonym: regio nasalis. (05 Mar 2000) |
| regio nuchalis | An alternate term for posterior region of neck. (05 Mar 2000) |
| regio occipitalis capitis | The surface region of the head corresponding to the outlines of the occipital bone. Synonym: regio occipitalis capitis. (05 Mar 2000) |
| regio olfactoria tunicae mucosae nasi | The specialised olfactory receptive area that includes the upper one-third of the nasal septum and the lateral wall above the superior concha; it is lined with olfactory mucosa. Synonym: regio olfactoria tunicae mucosae nasi, olfactory region of tunica mucosa of nose, Schultze's membrane. (05 Mar 2000) |
| regio oralis | The region of the face including the lips and mouth. Synonym: regio oralis. (05 Mar 2000) |
| regio orbitalis | The region about the orbit. Synonym: regio orbitalis. (05 Mar 2000) |
| regio parietalis capitis | The surface region of the head corresponding to the outlines of the underlying parietal bone. Synonym: regio parietalis capitis. (05 Mar 2000) |
| regio pectoralis | 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) |