Question

What are the types of paranasal sinuses?

1) Frontal, ethmoidal, sphenoidal and maxillary
2) Nasal, ethmoidal, sphenoidal and maxillary
3) Frontal, nasal, sphenoidal and maxillary
4) Frontal, ethmoidal, nasal and maxillary

Answer 1

The types of paranasal sinuses are the frontal, ethmoidal, sphenoidal, and maxillary sinuses.

Step-by-step explanation:

The paranasal sinuses are hollow, air-filled spaces named for the skull bone that each occupies. The types of paranasal sinuses are:

1. Frontal sinus: Located in the frontal bone above the eyebrows.
2. Ethmoidal sinuses: Multiple small spaces located in the right and left sides of the ethmoid bone, between the medial wall of the orbit and lateral wall of the upper nasal cavity.
3. Sphenoidal sinus: Located in the body of the sphenoid bone, under the sella turcica.
4. Maxillary sinuses: Located in the right and left maxillary bones below the orbits. The largest sinuses.