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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.
The genioglossus is one of the paired extrinsic muscles of the tongue. It is a fan-shaped muscle that comprises the bulk of the body of the tongue. It arises from the mental spine of the mandible; it inserts onto the hyoid bone, and the bottom of the tongue. It is innervated by the hypoglossal nerve (cranial nerve XII). The genioglossus is the ...
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 origin of the genioglossus muscle, one of the muscles of the tongue. Mental spines are important landmarks in clinical practice.
The thyrohyoid muscle is innervated (along with the geniohyoid muscle [1] [3]: 457, 709 ) by a branch of the cervical plexus [4] [3]: 538 - the nerve to thyrohyoid muscle (thyrohyoid branch of ansa cervicalis) [4] - which is formed by fibres of the cervical spinal nerve 1 (C1) [1] [2] [3]: 538 (and - according to some sources - cervical spinal nerve 2 as well [4] [3]: 457 ) that join and ...
Scalene muscles; Sphenomandibularis; Splenius capitis muscle; Stapedius muscle; Sternocleidomastoid muscle; Sternohyoid muscle; Sternothyroid muscle; Styloglossus; Stylohyoid muscle; Stylopharyngeus muscle; Suboccipital muscles; Superior auricular muscle; Superior longitudinal muscle of tongue; Superior oblique muscle; Superior pharyngeal ...
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) .
the mylohyoid muscle inferiorly; the medial surface of the mandible anterolaterally; the muscles along the base of the tongue (geniohyoid and genioglossus muscles) posteriorly; medially, the intrinsic muscles of the tongue and genioglossus separate the two halves of the sublingual space.
Geniohyoid: by a branch from the hypoglossal nerve consisting of fibres from the C1 nerve. Sternohyoid, omohyoid, sternothyroid are supplied by ansa cervicalis. Thyrohyoid: by a branch of hypoglossal nerve but the fibres are all 'hitch-hiking' from C1.