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PSR
directional body planes
| Term | Definition |
|---|---|
| medial | toward the midline or center, inner |
| lateral | to the side of the body |
| superior or cephalic | toward the head, surface, upper portion of body |
| inferior or caudal | toward the feet or lower portion of the body |
| anterior or ventral | towards the front of the body |
| posterior or dorsal | toward the back |
| proximal | near the center of the body or structure |
| distal | away from the body/area |
| bilateral | pertaining to both sides of the body or structure |
| unilateral | pertaining to only one side of the body or structure |
| palmar | pertaining to the sole of the foot |
| deep | toward the interior |
| superficial | toward the surface |
| parietal | the wall of a hollow organ or body cavity |
| visceral | inner covering of the surface of an organ or body cavity |