tympanic

Examples of tympanic in the following topics:

• Audition: Hearing, the Ear, and Sound Localization

  • It includes the pinna, the ear canal, and the most superficial layer of the ear drum, the tympanic membrane.
  • Once the wave has vibrated the tympanic membrane, sound enters the middle ear.
  • The middle ear is an air-filled tympanic (drum-like) cavity that transmits acoustic energy from the ear canal to the cochlea in the inner ear.
  • Within the cochlea there are three fluid-filled spaces: the tympanic canal, the vestibular canal, and the middle canal.

• Reception of Sound

  • The malleus attaches at three points to the interior surface of the tympanic membrane.
  • Sound travels through the outer ear to the middle ear, which is bounded on its exterior by the tympanic membrane.

• Otitis Media

  • It occurs in the area between the tympanic membrane and the inner ear, also effecting a duct known as the eustachian tube.
  • This is a view of the tympanic membrane showing inflammation and redness, typical of acute otitis media.

• Glossopharyngeal (IX) Nerve

  • General sensory (general somatic afferent): Provides general sensory information from the skin of the external ear, internal surface of the tympanic membrane, upper pharynx, and the posterior 1/3 of the tongue.

• Cranial Bones

  • The temporal bones consist of four regions the squamous, mastoid, petrous and tympanic regions.
  • Finally, the small and inferior tympanic region lies anteriorly to the mastoid.

• Organogenesis

  • It also forms the lining cells of all the glands which open into the digestive tube, including those of the liver and pancreas; the epithelium of the auditory tube and tympanic cavity; the trachea, bronchi, and air cells of the lungs; the urinary bladder and part of the urethra; and the follicle lining of the thyroid gland and thymus.

• Facial (VII) Nerve

• Transduction of Sound

  • The middle ear exists between the tympanic membrane (the boundary with the outer ear) and the oval window (the boundary with the inner ear) and consists of three bones: the malleus (meaning hammer), the incus (meaning anvil), and the stapes (meaning stirrup).