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Samsam 101
Directional terms, planes, and bone structures
| Question | Answer |
|---|---|
| Frontal/Coronal | Separates chest and back |
| Sagittal | Separates left and right |
| Midsagittal | Separates left and right symmetrically |
| Parasagittal | Separates left and right asymmetrically |
| Transverse | Separates top and bottom |
| Oblique | Separates along undefined axis |
| Proximal | Closer to the torso |
| Midline | Divides humans symmetrically |
| Medial | Closer to the midline |
| Lateral | Closer to the surface |
| Superior | Higher |
| Inferior | Lower |
| Anterior | Front |
| Posterior | Back |
| Dorsal | Back |
| Ventral | Belly |
| Cranial | Towards head end |
| Caudal | Towards foot end |
| Ipsilateral | Same side |
| Contralateral | Opposite side |
| Superficial | Near the surface |
| Deep | Far from the surface |
| Flat bone examples | Cranium, pelvis, sternum, ribs, scapula |
| Sesamoid bone examples | Patella (kneecap) |
| Irregular bone examples | Vertebrae, sacrum, coccyx |
| Foramen | Opening |
| Sulcus | Superficial groove |
| Fissure | Deep groove |
| Fossa | Hollow area or depression |
| Meatus | Canal |
| Process | Tissue projection or outgrowth |
| Condyle | Round, bulbous end of a bone |
| Facet | Smooth surface |
| Head | Bigger bulb on the end of a long bone |
| Crest | Ridge |
| Epicondyle | Round bulbous structure on distal end of bone |
| Line | I hope you knew this one |
| Spinous process | Backward and down facing outgrowths on vertebrae |
| Trochanter | Bone outgrowth on femur opposite to head |
| Tubercle | Small wart or outgrowth on bone generally for muscle insertion |
| Tuberosity | Projection or protuberance, especially for muscle attachment on a bone |
| Origin | Relative location; for muscles, the point where support is derived |
| Insertion | The end of a muscle used for manipulation |