BIO 201 Exam I Key Terms - Skeletal System

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Across
  1. 3. number of inferior bones that are fusions of several vertebrae including the sacrum and coccyx
  2. 5. location where neck of rib articulates with transverse process
  3. 7. breastbone on anterior midline comprised of 2 bones that fuse at approximately 40 years of age including manubrium, body, xiphoid process
  4. 8. body frame around chest composed of thoracic vertebrae posteriorly, ribs laterally, and sternum anteriorly, protecting heart, lungs, trachea, esophagus, and other thoracic organs
  5. 10. type of atypical vertebra, usually fused in third decade of life, has alae, promontory, sacral canal, and sacral foramina
  6. 13. category of skeleton including pectoral girdle, upper limb, pelvic girdle, and lower limb
  7. 15. type of vertebrae with small body, transverse foramen for nerved and blood vessels to head
  8. 16. pairs 1 through 7, articulate anteriorly with the sternum via costal cartilages
  9. 18. "wing-like" projections
  10. 19. houses the spinal cord, stabilizes the axial body, muscle attachment
  11. 20. type of atypical vertebra, has an odontoid process or dens acting as axis of rotation between the atlas and the skull
  12. 21. for nerves extending from the inferior end of the spinal cord
Down
  1. 1. also known as ribs, articulates posteriorly with thoracic vertebrae
  2. 2. type of vertebrae with increasing body size, without transverse foramen
  3. 4. number of individual bones, divided into cervical, thoracic, and lumbar regions
  4. 6. pairs 11 and 12, do not articulate with any bone anteriorly
  5. 8. number of bone comprising vertebral column
  6. 9. for nerves extending from the inferior end of the spinal cord
  7. 11. location where head of rib articulates between two vertebra bodies
  8. 12. pairs 8 through 12, do not articulate directly with sternum via their costal cartilages
  9. 14. type of atypical vertebra, articulates with condyles of occipital bone, has deep superior articular facets, only vertebra that lacks a body
  10. 17. anteriosuperior edge of 1st vertebrae
  11. 22. type of vertebrae with large body size, no transverse foramen, and thick transverse and spinous processes