Understanding The Maxillary Sinus: Nerve Supply, Blood Supply, And Function

Understanding The Maxillary Sinus: Nerve Supply, Blood Supply, And Function

Question 1. Maxillary sinus. (or) Functions of the maxillary sinus.
Answer:

Synonym: Antrum of Highmore

maxillary sinus Definition:

• It is the pneumatic space that is lodged inside the body of the maxilla and communicates with the environment by way of the middle meatus.

maxillary sinus Anatomy:

• It is pyramidal in shape with a base facing nasal cavity and apex facing zygomatic bone.

maxillary sinus Nerve supply:

• Superior alveolar nerve
• Infraorbital nerve
• The greater palatine nerve.

maxillary sinus Blood supply:

Question 2. The lining of the maxillary sinus.
Answer:

The maxillary sinus is lined by 3 layers.

1. Epithelial layer.

• It is pseudostratified, columnar ciliated.
• It contains basal cells, columnar nonciliated cells, and goblet cells.

2. Basal layer

3. Subepithelial layers.

• It consists of blood capillaries, fibroblasts, fibrocytes, collagen bundles, and other connective tissue elements.