Question

question 17 ex 9 ryk b vertebral column and thorax select the name of the structure that is described: 1. softens jolts to the vertebral column 2. opening for spinal nerve exit 3. bony protection for thoracic organs 4. first cervical vertebra 5. second cervical vertebra 6. articulates with rib posteriorily 7. tailbone 8. encloses and protects the spinal cord question 18 ex 9 ryk b vertebral column and thorax select the correct name of the structure that is described 9. and 10. primary curvatures select one or more: a. cervical curve b. thoracic curve

Explanation:

1. Intervertebral discs act as shock - absorbers between vertebrae.
2. Intervertebral foramina are the openings through which spinal nerves exit.
3. The thoracic cage provides bony protection for thoracic organs.
4. The atlas is the first cervical vertebra.
5. The axis is the second cervical vertebra.
6. The facet and demifacet joints of thoracic vertebrae articulate with ribs posteriorly.
7. The coccyx is the tailbone.
8. The vertebral canal within the vertebral column encloses and protects the spinal cord.

9 - 10. The primary curvatures of the vertebral column are the thoracic and sacral curves (but in the given options, thoracic curve is correct as cervical curve is a secondary curvature).

Answer:

1. intervertebral discs
2. intervertebral foramina
3. thoracic cage
4. atlas
5. axis
6. facet and demifacet joints of thoracic vertebrae
7. coccyx
8. vertebral column

9 - 10. b. thoracic curve