Answers, BIO 2310, Axial Skeleton


1.Frontal, Occipital, Parietal, Temporal, Sphenoid, Ethmoid

2.Vomer, Mandible, Maxilla, Inferior nasal concha, Lacrimal, Zygomatic, Palatine, Nasal

3. Know about structures observed in lab.

4.Soft spot between skull bones in baby’s head. It allows squishing of skull during childbirth and for growth of brain.

5. Coronal suture between frontal and parietal bones; Sagittal suture between 2 parietal bones; Lambdoidal suture between occipital and parietal; Squamosal suture between temporal and parietal bones.

6. Zygomatic and Temporal

7. Ethmoid, Sphenoid, Maxilla, Palatine, Lacrimal, Zygomatic, Frontal

8. Pituitary gland

9. Vomer and perpendicular plate of Ethmoid

10. Palatine process of Maxilla and Palatine bones

11. Maxilla and Mandible

12. Hyoid. It has no articulations

13. Cervical – 7

Thoracic – 12

Lumbar – 5

Sacral – 5 fused making the sacrum

Coccyx – 3-5 fused

14. Intervertebral disc made of fibrocartilage. Inter- means between.

15. C1 is the atlas; C2 is the axis.

16. Odontoid process = Dens

17. Vertebral foramen housing spinal cord. The vertebral arch comprised of the pedicles laterally and the lamina dorsally. Extending from the vertebra are the spinous process dorsally and transverse process laterally. The ventral part of the vertebra is the body. The facets or articular process articulate with the vertebra above/below it.

18. Manubrium, body, xiphoid process

19. True rib has its own costal cartilage going to the sternum. 7 pair

False rib does not have its own costal cartilage going to the sternum 5 pair

Floating rib (which by definition is also false rib) has NO costal cartilage – 2 pair – 11 and 12.