Difference between revisions of "Anatomy Pearls"
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*The cervical vertebrae have a transverse foramen through which the vertebral arteries and veins pass. | *The cervical vertebrae have a transverse foramen through which the vertebral arteries and veins pass. | ||
*The transverse foramen of C8 contains only the vein, not the artery. | *The transverse foramen of C8 contains only the vein, not the artery. | ||
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*All other ribs articulate with three costal facets, one on the body, one on the transverse process, and one on the vertebra one level above. | *All other ribs articulate with three costal facets, one on the body, one on the transverse process, and one on the vertebra one level above. | ||
*The navicular bone sits behind the small “navy” of cuneiform bones. | *The navicular bone sits behind the small “navy” of cuneiform bones. | ||
| − | + | ||
| + | =Abdomen= | ||
* Liver | * Liver | ||
| − | ** | + | ** Portal vein divides the top from bottom halves of the liver. On the top half the segments are 2, 4a, 8, and 7. On the bottom half they are 3, 4b, 5, and 6. |
| + | ** Hepatic veins divide the segments on the top half. | ||
Latest revision as of 15:37, 10 March 2022
Bones
- The cervical vertebrae have a transverse foramen through which the vertebral arteries and veins pass.
- The transverse foramen of C8 contains only the vein, not the artery.
- Cervical vertebrae have uncovertebral joints which facilitate head rotation. Hypertrophy of these joints is a common cause of neural foramenal obstruction.
- Atlas is the strongest cervical vertebrae.
- Axis has no body, just an anterior and posterior arch.
- Ribs 11 and 12 (the “floating” ribs) attach only to the vertebrae, not the sternum. Furthermore, they articulate at a single costal facet on the vertebral body.
- Rib 1 and 10 articulate with a superior and transverse costal facet respectively on the body and transverse process of their vertebrae.
- Ribs 8-10 are so-called “false ribs” because they articulate anteriorly with the costal cartilage of the ribs above them rather then with the sternum or manubrium.
- All other ribs articulate with three costal facets, one on the body, one on the transverse process, and one on the vertebra one level above.
- The navicular bone sits behind the small “navy” of cuneiform bones.
Abdomen
- Liver
- Portal vein divides the top from bottom halves of the liver. On the top half the segments are 2, 4a, 8, and 7. On the bottom half they are 3, 4b, 5, and 6.
- Hepatic veins divide the segments on the top half.