Question

Which of the following bones forms the inferior part of the nasal septum?
A. Ethmoid
B. Vomer
C. Girdle
D. None of the above

Answer 1

Hint: The nasal cavity is defined as an air-filled space that is present behind the nose in the middle of the face. It is made up of septum that divides the cavity into two different cavities that are termed as fossae. The nasal cavity is divided into dorsal, caudal and ventral.

Complete Answer:
The caudal portion is defined as the part away from the head, ventral is defined the front part of the nose, and the dorsal is the back or upper side of the nose. Nasal part of the body is the respiratory and olfactory organ. It consists of a nasal cavity and nasal skeleton.

Now lets us find the solution from the given options:
- Ethmoid: Ethmoid bone is an unpaired that is present singly as a bone. This bone separates the nasal cavity from the brain. It is located in the roof of the nose between the orbits. Therefore, this bone shows the mark as a caudal surface.
- Vomer: It is an unpaired facial bone that is present at the midsagittal line. These bones show articulation with ethmoid.
- Girdle: It is of two types that is pectoral girdle and pelvic girdle. It is the space where articulation takes place.
- None of the above: As one of the options is correct , this cannot be correct.

Our required option is B that is Vomer.

Note: The nasal cavity is covered by the paranasal sinuses which are the group of air-filled spaces around the nasal cavity, are four in number. The sinuses which are located below the eye are called maxillary sinuses. The sinuses that are located between the eyes are ethmoidal sinuses, and which are present behind the eyes are called sphenoidal sinuses.