Search results
Results from the WOW.Com Content Network
The geniohyoid is a paired short muscle that arises from the inferior mental spine, on the back of the mandibular symphysis, and runs backward and slightly downward, to be inserted into the anterior surface of the body of the hyoid bone. [2]: 346 It lies in contact with its fellow of the opposite side. It thus belongs to the suprahyoid muscles.
Together, the paired mylohyoid muscles form a muscular floor for the oral cavity of the mouth. [2] The two mylohyoid muscles arise from the mandible at the mylohyoid line, which extends from the mandibular symphysis in front to the last molar tooth behind. The posterior fibers pass inferomedially and insert at anterior surface of the hyoid bone
The hyoglossus is a thin and quadrilateral extrinsic muscle of the tongue. It originates from the hyoid bone; it inserts onto the side of the tongue. It is innervated by the hypoglossal nerve (cranial nerve XII). It acts to depress and retract the tongue.
The four classical muscles of mastication elevate the mandible (closing the jaw) and move it forward/backward and laterally, facilitating biting and chewing. Other muscles are responsible for opening the jaw, namely the geniohyoid , mylohyoid , and digastric muscles (the lateral pterygoid may play a role).
Mylohyoid: by its own nerve, a branch of the inferior alveolar (from the mandibular division of trigeminal nerve), which arises just before the parent nerve enters the mandibular foramen, pierces the sphenomandibular ligament, and runs forward on the inferior surface of the mylohyoid, supplying it and the anterior belly of the digastric.
The ansa cervicalis (or ansa hypoglossi in older literature [citation needed]) is a loop formed by muscular branches of the cervical plexus formed by branches of cervical spinal nerves C1-C3. The ansa cervicalis has two roots - a superior root (formed by branch of C1) and an inferior root (formed by union of branches of C2 and C3) - that unite ...
There are usually four mental spines: two superior and two inferior. Collectively they are also known as the genial tubercle , [ 1 ] genial apophysis and the Latin name spinae mentalis . The inferior mental spines are the points of origin of the geniohyoid muscle , [ 2 ] one of the suprahyoid muscles , and the superior mental spines are the ...
2 1 mylohyoid: Neck, Suprahyoid, Right/left mylohyoid line of mandible: pharyngeal raphe: mylohyoid branch of inferior alveolar artery: mylohyoid nerve, from inferior alveolar branch of mandibular nerve [CNV 3] raises oral cavity floor, elevates hyoid, depresses mandible?? 2 1 geniohyoid: Neck, Suprahyoid, Right/left mandibular symphysis