| Term | Definition |
| PA projection | CR enters the posterior and exits the anterior |
| AP projection | CR enters the anterior and exits the posterior |
| Lateral projection | CR enters one side and exits the opposite side |
| Oblique projection | CR enters for a side angle following an oblique plane |
| Tangential projection | CR skims body part |
| Axial projection | CR angles longitudinally with the long axis of the body |
| Anterior/Ventral | The front or foward aspect of the body or body part |
| Dorsal/Posterior | The back part of the body or body part |
| Medial/Mesial | Toward the median plane or middle of a part; opposite of lateral; e.g. spine is ______ to the kidneys |
| Lateral | Away from the median plane or middle of a part; e.g. kidneys are _______ to the spine |
| Distal | Parts furthest from the point of origin or attachment; fingers are ______ to the wrist; opposite of proximal |
| Proximal | Parts closest to the point of origin or attachment; e.g. elbow is ________ to the wrist; opposite of distal |
| Caudal/inferior | Away from the head or toward the tail or feet |
| Cephalic/superior | Pertaining to or toward the head; cranial |