Question

avity Sred Label the bony features of the orbit Orbital surface of greater wing Orbital surface of maxilla Orbital process of palatine bone Orbital surface of zygomatic bone Orbital surface of frontal bone < Prev 23 of 69!!! Next > OEM *

Answer 1

BONE FEATURES Orbital surface of frontal bone Orbital surface of greater wing Orbital surface of zygomatic bone Orbital surface of maxilla Orbital surface of palatine bone

The orbit is the compartment or cavity in which eye is situated. It is basically comprised of seven bones.

The seven bones are as following:
1.) Frontal bone
2.) Sphenoid bone: a.) Greater wing of Sphenoid and b.) Lesser wing of Sphenoid
3.) Maxillary bone
4.) Zygomatic bone
5.) Ethmoid bone
6.) Palatine bone
7.) Lacrimal bone

Let’s define each term.

1.) Frontal bone: This bone is the part of the human skull which is found in the forehead region.
2.) Sphenoid bone: It is the bone that helps in the formation of skull and provides rigidity to it. Greater wing and lesser wing articulate into formation of sphenoid bone. Another key feature of this bone is that it joins with almost every bone of skull.
3.) Maxillary bone: These are the bones which help in the formation of upper jaw and have their contribution in orbit formation as well.
4.) Zygomatic bone: Also called as cheek bone has two extensions formed from maxilla and temporal bone. Both these extensions contribute in the formation of zygomatic bone.
5.) Ethmoid bone: It is the bone located between the eyes and helps in the formation of nasal cavity, orbit and various other parts. It is also very light and spongy bone.
6.) Palatine bone: It has a smaller contribution to the formation of orbit as well as nasal cavity. It also forms the hard palate hence the name Palatine.
7.) Lacrimal bone: It is a facial bone that helps in the formation of orbit. It is very small in size. You might have heard of lacrimal glands which helps in tear formation. This bone provides a canal to drain out that tear.

All these bones with their contributions helps to form the orbit.