Lining the nasal cavity is a mucous membrane rich with blood vessels. The increased surface area and the many blood vessels enable the nose to warm and humidify incoming air quickly. Cells in the mucous membrane produce mucus and have tiny hairlike projections (cilia).

A sinus is a sac or cavity in any organ or tissue, or an abnormal cavity or passage. In common usage, "sinus" usually refers to the paranasal sinuses , which are air cavities in the cranial bones, especially those near the nose and connecting to it.

Aug 15, 2024 · Paranasal sinuses serve as “crumple zones” or “crash zones” that absorb some of the force during head trauma. By absorbing some of the hit, they protect crucial structures, like your brain, from direct impact. Influencing how your voice sounds. Your sinuses act as resonators that help give your voice its uniqueness.

Oct 30, 2023 · Paranasal sinuses are found in three bones of the neurocranium (braincase), the frontal bone, ethmoid bone, and sphenoid bone. The maxilla is the only facial bone (viscerocranium) that contains its own sinuses. The four pairs of sinuses are named by their corresponding bones and include:

The sidewalls of the nose, or lateral nasal walls, include three structures called turbinates. The turbinates are finger-like projections composed of a bony core and covered with soft tissue and mucosa, and are important because they serve to increase the mucosal surface area of the nasal cavity and regulate nasal airflow.

Apr 1, 2021 · There are two frontal sinuses located within the frontal bone of the skull. They are the most superior of the paranasal sinuses, and are triangular in shape. Drainage is via the frontonasal duct. It opens out at the hiatus semilunaris, …

Feb 11, 2023 · Frontal Sinus. The frontal sinus is a highly variable air-filled anatomical structure located superior to the orbit and within the frontal bone. Its shape and size depend on climate and ethnicity but is more or less pyramidal in adults, and the typical volume is 4 to 7 mL.

The entire nasal cavity is covered with a special lining (“mucosa”). This mucosal surface has microscopic hair like structures (cilia) and many mucus producing glands. The moist, mucus-covered surface (mucus blanket) of the nasal cavity traps harmful particles such as …

The paranasal sinuses, often referred to as “the sinuses,” are hollow spaces found within the facial bone called the frontal bone. Each sinus is named after the bone it’s located in. Here’s a brief look at each: Maxillary Sinuses: These are found on …

To understand the work our sinuses do, we must examine sinus anatomy. When we think about sinuses, we tend to think about those pockets that cause the most pain—those sinuses on each side of our nose that are known as the maxillary sinuses.