ANATOMY

Detailed explanation-1: -The triangular-shaped frontal sinuses are in the frontal bone superior to the orbits. These sinuses vary in size. They open at the lateral wall of the middle meatus, which then continues as the semilunar hiatus, which drains the maxillary sinus. Finally, the sphenoidal sinuses are in the body of the sphenoid.

Detailed explanation-2: -The frontal sinuses are located above the eyes, near your forehead. The ethmoid sinuses are located on each side of the bridge of your nose, near your eyes. There are three small pairs of the ethmoid sinuses. The sphenoid sinuses are behind the eyes, deeper into your skull.

Detailed explanation-3: -Sinuses are air pockets that are located within the bones of the skull and face and are connected to your nasal passages by small tubes or channels, the osteomeatal complex. These channels permit air to flow from the nose into the sinuses and allow drainage of mucous from each sinus into the nose.

Detailed explanation-4: -Paranasal sinuses are air-filled cavities in the frontal, maxilae, ethmoid, and sphenoid bones. These sinuses, which have the same names as the bones in which they are located, surround the nasal cavity and open into it.

Detailed explanation-5: -Sinuses are small air-filled spaces in the bones that are connected to the nasal cavity. They are called paranasal because they are around the nose. The different sinuses are named depending on which bones they are in: Maxillary sinuses are in the cheek area, below the eyes on either side of the nose.