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Exercise · Q8

Q.Select the correct option showing the two nasal bones, from the four diagrams given.

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Concept understanding — Skull and Facial Bones

The skull (22 bones) sits atop the vertebral column and consists of the cranium (brain box) and the facial bones, joined mostly by immovable sutures except at the mandible. The cranium's four median bones are the frontal (forehead/orbit roof), occipital (back/base of skull, with the foramen magnum and paired occipital condyles), sphenoid (base of skull, with the sella turcica housing the pituitary), and ethmoid (contributes to the nasal septum); its paired bones are the parietals (roof/sides) and temporals (house the ear canal, bear the zygomatic process and mandibular fossa). Four sutures are especially prominent: coronal, sagittal, lambdoid, and lateral/squamous. …

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