Human Sinus Anatomy

The sinuses act as protection for the face and help protect the vital bones and other facial features from trauma just like the air pillows protect the fragile objects. The nasal septum separates the left and right maxillary sinuses 9.

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It is however distinct from a fistula which is a tract connecting two epithelial surfaces.

Human sinus anatomy. The frontal sinuses lie behind the forehead above the eyes. The ethmoid sinuses are located on each side of the bridge of your. The sphenoid sinuses are located behind the ethmoid sinuses.

Sphenoid sinus within the sphenoid bones. A narrow opening called a sinus ostium from each of the paranasal sinuses allows drainage into the nasal cavity. The ethmoid sinuses lie under the inside corners of the eyes.

The nasal bone and cartilage provide shape to the nose. The sinuses are lined with mucus producing membranes that help guard against pathogens debris and pollutants. The frontal sinuses are located above the eyes near your forehead.

The maxillary sinuses are located on each side of your nose near the cheek bones. The sinuses are a connected system of hollow cavities in the skull. The maxillary sinus is the largest of the sinuses and drains into the middle meatus.

The largest sinus cavities are about an inch across. The maxillary sinuses are behind the cheeks. The maxillary sinus is the largest of the sinuses and drains into the middle meatus.

The word sinusitis is used to indicate that one or more of the membrane linings found in the sinus cavities has become inflamed or infected. You will also find uvula soft palate hard palate anterior naris vestibule inferior turbinate middle turbinate superior turbinate frontal sinus as well. In anatomy the term is used in various contexts.

There are four pairs of sinuses named for the bones that theyre located in. A sensory organ that is responsible for olfaction the human nose is a part of the respiratory system. The most posterior of all the paranasal sinuses these are located behind the ethmoid sinuses near the pituitary gland and optic nerves 8.

Comprising the external nose and nasal cavity the nose is not only associated with olfaction it also helps in conditioning the air that we inhale. Human sinus anatomy in this image you will find the cribriform plate of ethmoid bone sphenoid sinus sella turcica choana pharyngeal tonsil the opening of auditory in it. Along with protecting our facial bones from trauma our sinuses also help to lighten the weight of our heads.

The paranasal sinuses include a maxillary sinus in each cheek six to 12 ethmoid sinuses on each side of the nose between the eyes a sphenoid sinus close to the center of the head behind the ethmoid sinuses and a frontal sinus on each side in the forehead. The average human brain weighs 286 3lbs. Your cheekbones hold your maxillary sinuses the.

The ethmoid frontal and maxillary sinuses surround the eye. Others are much smaller.

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