NEET PG DENTAL EXAM

HEAD NECK

ORBIT NOSE EAR

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Thin bone forming the inner orbital cavity
A
lacrimal
B
zygomatic
C
sphenoid
D
ethmoid
Explanation: 

Detailed explanation-1: -The largest part of the medial wall is from the ethmoid bone. The frontal process of the lacrimal fossa and the bony nasolacrimal canal are continuous and extend into the inferior meatus of the nasal cavity. The medial wall of the ethmoid bone is actually very thin and is called the lamina papyracea.

Detailed explanation-2: -There are seven orbital bones that make up this structure: the frontal, sphenoid, zygomatic, ethmoid, lacrimal, palatine and maxilla bones. Each of these plays a role in keeping the eyeball protected. Though small, the orbital bones are quite strong to protect the eye inside the head.

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