Where is the tensor tympani and stapedius located?
middle ear
Tensor tympani is a tiny, but long paired muscle of the middle ear. Together with the stapedius, it belongs to the group of intratympanic muscles. Tensor tympani occupies a bony canal found superior to the osseous part of the auditory tube (pharyngotympanic tube; Eustachian tube).
What is the role of the stapedius muscle?
The stapedius muscle puls the neck of the stapes in the direction of the stapedius tendon. This movement causes stiffening of the incus and the malleus and also changes the pressure of the perilymph in the inner ear. This is the protective inner ear action of the stapedius reflex against hearing damage by noise.
What are the stapedius and the tensor tympani quizlet?
What is the function of the Stapedius and Tensor Tympani Muscles? These muscles contract in response to loud sounds, thereby reducing the transmission of sound to the inner ear.
Where is the Stapedius muscle located?
The stapedius is the smallest skeletal muscle in the body and is approximately 1 mm in length. It arises from a prominence in the tympanic cavity at the posterior aspect called the pyramidal eminence. It inserts into the neck of the stapes.
What is the function of the tensor tympani and stapedius muscles?
The tensor tympani and stapedius muscles are protective reflexes. They reduce the amount of sound that gets into the inner ear. They are somewhat similar to the blink reflex. Thus they can be triggered by loud noise, and when they “go off”, both ears can be involved.
What is a stapedius?
Where is the stapedius muscle located?
What is stapedius tendon?
Nerve to Stapedius The stapedius is the smallest skeletal muscle in the body and is approximately 1 mm in length. It arises from a prominence in the tympanic cavity at the posterior aspect called the pyramidal eminence. It inserts into the neck of the stapes.
Where is the stapedius muscle attached?
The stapedius muscle is the tiny muscle in the middle ear that attaches to the posterior aspect of the neck of the stapes, which when contracted dampens vibrations passed to the cochlea via the oval window.