Perilymph is a clear, watery fluid that surrounds the membranous labyrinth of the inner ear. It is found within the scala tympani and scala vestibuli of the cochlea. The ionic composition of perilymph is comparable to that of plasma and cerebrospinal fluid.
What is perilymph and its function?
The function of perilymph is to support the membranous labyrinth and to transmit sound waves to the sensory hair cells of the cochlea. The perilymph is also thought to play a role in maintaining the electrical balance of the inner ear.
What is perilymph and endolymph?
Perilymph and endolymph are the two fluids that fill the inner ear. Perilymph is found outside of the membranous labyrinth, while endolymph is found inside the membranous labyrinth. Perilymph is similar in composition to extracellular fluid, while endolymph is similar in composition to intracellular fluid.
What is the difference between endolymph and perilymph?
The main difference between perilymph and endolymph is their ionic composition. Perilymph has a high concentration of sodium ions and a low concentration of potassium ions, while endolymph has a high concentration of potassium ions and a low concentration of sodium ions. This difference in ionic composition is important for the function of the inner ear.
Where is perilymph in the ear?
Perilymph is found in the scala tympani and scala vestibuli of the cochlea. It is also found in the saccule and utricle of the vestibular system.
What is perilymph in audiology?
Perilymph is an important part of the inner ear and plays a role in hearing and balance. In audiology, perilymph is often tested for in cases of hearing loss or balance disorders. A test called a perilymph fistula is used to check for leaks in the perilymph space. If a leak is found, it can be repaired surgically.