The Nasal Cavity – Structure – Vasculature – Innervation

The Nasal Cavity – Structure – Vasculature – Innervation

Enumerate the characteristic features of the lateral wall of the nose.
Answer.

The lateral wall of the nose presents the following features:

Three conchae/turbinates

Superior concha:

It is a curved bony projection from the medial surface of the ethmoid bone. It is the smallest concha.

Middle concha:

It is a curved bony projection from the medial surface of the ethmoid bone.

Inferior concha:

It is an independent bone.

Three meatuses

Three meatuses are passages beneath the overhanging conchae.

Superior meatus:

Lies below the superior concha.

Middle meatus:

Lies underneath the middle concha. It presents:

• Ethmoidal bulla, a rounded elevation produced by underlying middle ethmoidal sinus.
• Hiatus semilunaris, a deep semicircular sulcus below the bulla.

Inferior meatus (largest):

Lies underneath the inferior concha.

Sphenoethmoidal recess

It is a triangular recess situated just above and behind the superior concha.

Opening of paranasal air sinuses and nasolacrimal ducts

The features of the lateral wall of the nose.