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Lab 4 - Spine & Ribs
vertebrae, ribs, sternum
| Term | Definition |
|---|---|
| atlas | C1; no body, cupped superior articular facets, smaller anterior arch, larger posterior arch |
| axis | C2; dens that articulates with anterior arch of atlas, has a body, has a spinous process |
| cervical vertebrae | neck, 7, C1-C7; have transverse foramen, some have bifid spinous processes |
| thoracic vertebrae | 12, T1-T12; giraffe; pointy, downward-facing spinous processes |
| lumbar vertebrae | lower back, 5, L1-L5; moose; more blunted, pinched spinous process, large body |
| sacrum | 5 fused vertebrae |
| coccyx | below sacrum, "tailbone" |
| manubrium | superior section of the sternum |
| body (sternum) | middle section of the sternum |
| xiphoid process | inferior section of the sternum |
| true ribs | superior 7 ribs; attach to costal cartilage and then to the sternum |
| false ribs | inferior 5 ribs; 8-10 "catch a ride" on the costal cartilage of rib 7 to attach to the sternum; 11-12 float and do not attach to the sternum |
| floating ribs | a type of false rib - ribs 11 and 12 - do not attach to the sternum (directly or indirectly) |
| ribs 2-11 touch which vertebrae.... | the thoracic vertebrae of the same number as the rib and one down |
| R vs L rib... | bumpy end in the back - correct curvature to encase organs - costal groove is on the inferior side |