What do the stapedius and tensor tympani muscles do?
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 are the functions of tensor tympani and stapedius muscles and what is their innervation?
The stapedius muscle is attached to the stapes; it is innervated by a branch of the VII nerve. The tensor tympani is attached to the malleus; it is innervated by a branch of the Vth cranial nerve. The action of both muscles is to decrease sound transmission through the middle ear.
Where is the tensor tympani and stapedius located?
middle ear
The tensor tympani is a muscle within the middle ear, located in the bony canal above the bony part of the auditory tube, and connects to the malleus bone….
| Tensor tympani muscle | |
|---|---|
| Nerve | Medial pterygoid nerve from the mandibular nerve (V3) |
| Actions | Tensing the tympanic membrane |
| Identifiers | |
| Latin | Musculus tensor tympani |
What is the function of the tensor tympani and stapedius muscles 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.
What is the function of the stapedius muscle?
In most of the literatures the stapedius muscle is explained as the smallest skeletal muscle in the human body. Its purpose is to stabilise the smallest bone in the body.
What is the function of the tensor tympani and the stapedius muscles in which region of the ear are they found?
Central control of receptor sensitivity in the ear Reflex changes in the tone of the tensor tympani muscle alter the dampening qualities of the tympanum, and the stapedius muscle controls the position and tension of the ossicles which transmit the sound vibrations 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 Stapedius muscle?
Stapedius muscle is termed to be the smallest skeletal muscle in human body, which has a major role in otology. Stapedius muscle is one of the intratympanic muscles for the regulation of sound.
What is the function of the auditory tube?
Auditory tube: The tube that runs from the middle ear to the pharynx, also known as the Eustachian tube. The function of this tube is to protect, aerate and drain the middle ear (and mastoid).
What is the tensor tympani muscle?
The tensor tympani muscle is a short muscle in the middle ear that arises from the superior surface of the cartilaginous part of the Eustachian tube, the greater wing of the sphenoid, and the petrous part of the temporal bone.
What is a stapedius?
What is the function of the Stapedius muscle?