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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. Its role is to dampen loud sounds, such as those produced from chewing , shouting, or thunder .
The stapedius muscle, the smallest skeletal muscle in the body, connects to the stapes and is controlled by the facial nerve; the tensor tympani muscle is attached to the upper end of the medial surface of the handle of malleus [2] and is under the control of the medial pterygoid nerve which is a branch of the mandibular nerve of the trigeminal ...
The medial pterygoid nerve supplies the medial pterygoid muscle, tensor tympani muscle, and tensor veli palatini muscle (via the nerve to tensor veli palatini). [1] The tensor veli palati muscle is the only of the five paired skeletal muscles to the soft palate not innervated by the pharyngeal plexus. [citation needed]
Muscles of mastication, anterior belly of the digastric, mylohyoid, tensor tympani, tensor veli palatini Premaxilla, maxilla , mandible (only as a model for mandible not actual formation of mandible), zygomatic bone , part of the temporal bone , [ 19 ] the incus , and the malleus of the middle ear, also Meckel's cartilage and the ...
The tensor veli palatini muscle receives motor innervation from the mandibular nerve (CN V 3) (a branch of the trigeminal nerve (CN V)) [2] via the nerve to medial pterygoid. [ 1 ] It is the only muscle of the palate not innervated by the pharyngeal plexus, which is formed by the vagal and glossopharyngeal nerves.
Tensor tympani (innervated by the mandibular nerve of CN V) [8] Tensor veli palatini (innervated by the mandibular nerve of CN V) The tube is opened during swallowing by contraction of the tensor veli palatini and levator veli palatini, muscles of the soft palate. [1] The tensor veli palatini makes the largest contribution to active opening of ...
The trigeminal motor nucleus contains motor neurons that innervate muscles of the first branchial arch, namely the muscles of mastication, the tensor tympani, tensor veli palatini, mylohyoid, and anterior belly of the digastric. [1] It is situated in the upper pons, inferior to the lateral part of the floor of the fourth ventricle. [2]
This also supplies the tensor tympani muscle and the tensor veli palatini muscle. The medial pterygoid nerve is a main trunk from the mandibular nerve, before the division of the trigeminal nerve - this is unlike the lateral pterygoid muscle, and all other muscles of mastication which are supplied by the anterior division of the mandibular nerve.