WebThe Eustachian tube is a narrow tube that connects the middle ear to the back of the nose. Normally, the Eustachian tube opens with every swallow or yawn to act as a pressure-equalizing valve for the middle ear. It also serves to drain the mucus produced by the lining of the middle ear. Blockage of the Eustachian tube isolates the middle ear ... WebFigure 1.Anatomy of the external ear. 4 Innervation of the auricle. The auricle has several sources of sensory innervation:. The superficial surface is supplied by the great auricular nerve and lesser occipital nerve, both of which are branches of the cervical plexus (C2 & C3), and the auriculotemporal branch of the mandibular nerve, which is a branch of the …
Anatomy and Physiology of the Nose and Throat
WebNov 9, 2024 · Mastoid air cells communicate with the middle ear via the mastoid antrum and the aditus ad antrum . The mastoid air cells are traversed by the Koerner septum, a thin bony structure formed by the petrosquamous suture that extends posteriorly from the epitympanum, separating the mastoid air cells into medial and lateral compartments. WebOct 10, 2024 · Function. The temporal bone provides structural support for the skull, while protecting the cerebrum of the brain and surrounding membranes. In addition, this bone surrounds the middle and inner portions of the ear. Its lower portion connects with the mandible or jawbone to allow the mouth to open and close. Notably, a majority of the … gray and brown flooring
Sinus Infection (Sinusitis): Causes, Symptoms & Treatment
WebNov 27, 2024 · Emergency Symptoms. Get emergency medical attention for pain behind your ear plus: High fever. Neck stiffness and sensitivity to light ( photophobia) Neurological symptoms (such as facial paralysis or confusion) Profuse ear drainage. Swelling, warmth, and/or spreading redness/discoloration behind the ear. WebMaxillary sinus. This sinus is located inside the face, around the area of the cheeks. It is also present at birth, and continues to grow. Frontal sinus. This sinus is located inside the face, in the area of the forehead. It does not develop until around 7 … WebAnatomy. The nasal cavity is a potential space situated above the oral cavity and hard palate and below the skull base and intracranial compartment. It is separated in the midline by the nasal septum into a right and left side. The nasal septum is composed of … chocolate hills landform