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 Name the bones of skull.


Skull : It has two sets of bones - the cranial and facial, that totals to 22 bones. Cranial bones are 8 in number. They form the hard protective outer covering, cranium for the brain. The facial region is made up of 14 skeletal elements which form the front part of the skull. A single U-shaped bone called hyoid is present at the base of the buccal cavity and it is also included in the skull.

A. Cranium : It encloses the brain. Cranium has following eight bones :

(a) Frontal bone (one)

(b) Parietal bones (two)

(c) Occipital bone (one)

(d) Temporal bones (two)

(e) Sphenoid bone (one)

(f) Ethmoid bone (one)

B. Bones of face : Face has fourteen bones namely :

(a) Nasals (two)

(b) Maxilla (two)

(c) Palatines (two)

(d) Mandible (one)

(e) Zygomatic bones or cheek bones (two)

(f) Inferior nasal conchae (two)

(g) Vomer (one)

(h) Lacrimal (two)

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Explain the division of the skeletal system. 

Give the functions of skull and ribs.

 Describe the types of ribs.

Write a note on vertebral column or back bone.

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