What is the endolymphatic duct?
The endolymphatic duct is a small epithelial-lined channel, part of the membranous labyrinth that passes through the vestibular aqueduct in the bony labyrinth of the petrous temporal bone. It arises from the utricle and saccule via the utriculosaccule duct and drains endolymph.
What does the endolymphatic duct join?
From the posterior wall of the saccule a canal, the endolymphatic duct, is given off; this duct is joined by the ductus utriculosaccularis, and then passes along the aquaeductus vestibuli and ends in a blind pouch (endolymphatic sac) on the posterior surface of the petrous portion of the temporal bone, where it is in …
Where does the endolymphatic duct drain?
The endolymphatic duct originates in the saccule and runs inside an osseous duct, the vestibular aqueduct, until it reaches the subarachnoid space.
Where is the endolymphatic sac located?
the inner ear
The endolymphatic sac (ES) is a membranous structure in the inner ear located partly in the temporal bone and partly within the dura of the posterior fossa. It contains endolymph, which is similar in chemical makeup to intracellular fluid (high in K, low in Na).
What is the function of endolymph?
The acceleration of endolymph within regions of the vestibular apparatus allows for our perception of balance and equilibrium. This occurs through head movement that causes endolymph to move specialized cells known as hair cells.
Where are the semicircular ducts?
Located in the inner ear, the semicircular canals are three very small tubes whose primary job is to regulate balance and sense head position. They’re considered part of the vestibular apparatus of the body.
What happens when endolymph and perilymph mix?
Therefore, endolymph fluid is mixed with perilymph fluid leading to an abnormal increase of fluid within the endolymphatic chamber. This abnormality of the Meniere’s disease can be occurred such as vertigo, tinnitus and hearing loss.
What is endolymphatic sac decompression?
Endolymphatic sac decompression is a treatment that is performed to maintain the hydrostatic pressure and endolymph homeostasis in the inner ear for patients with Meniere’s disease. This procedure can reverse the damage to the ear while maintaining the balance of your hearing levels.
How do you reduce endolymphatic fluid?
Treatment
- Reduce caffeine and alcohol intake.
- Stay hydrated at all times.
- Eat a balanced diet (lower salt and sugar intake)
- Medication (for dizziness, nausea, and vomiting)
- Diuretics.
- Vestibular rehabilitation.
- Steroid injections (antibiotic gentamicin or corticosteroid methylprednisolone)
What is the difference between endolymph and perilymph?
Endolymph is the fluid found inside the membranous labyrinth while perilymph is the fluid that surrounds the endolymph, located inside the bony labyrinth. The conversion of sound waves into the nerve impulses occurs inside the endolymph while the perilymph transforms the sound waves into the endolymph.