Axons of type SVE, special visceral efferent, innervate muscles of facial expression, stapedius, the posterior belly of digastric, and the stylohyoid.
12.
The stylohyoid muscle, stapedius and posterior belly of the digastric muscle are also innervated by the facial nerve, but are not considered muscles of facial expression.
13.
This space is bounded behind by the sternocleidomastoid, above by the stylohyoid and the posterior belly of the digastric muscle, and below by the superior belly of the omohyoid.
14.
An area in the neck sometimes called the Pirogov triangle is formed by the intermediate tendon of the digastric muscle, the posterior border of the mylohyoid muscle, and the hypoglossal nerve.
15.
The upper sternocleidomastoid branch diverts from the main trunk at the deep border of the proximal end of the posterior digastric muscle belly, coursing with the spinal accessory nerve prior to arborising into the sternocleidomastoid.
16.
The mammalian stapedius evolved from a muscle called the depressor mandibulae in other tetrapods, the function of which was to open the jaws ( this function was taken over by the digastric muscle in mammals ).
17.
The digastric muscle stretches between the mastoid process of the cranium to the mandible at the chin, and part-way between, it becomes a tendon which passes through a tendinous pulley attached to the hyoid bone.
18.
It descends in a groove on the deep surface of the ramus of the mandible, and reaching the under surface of the mylohyoid muscle, it supplies both the mylohyoid and the anterior belly of the digastric muscle.
19.
In human neuroanatomy of the face, the "'stylohyoid branch of facial nerve "'frequently arises in conjunction with the digastric branch; it is long and slender, and enters the Stylohyoideus about its middle.
20.
In the neck, its origin is superficial, being covered by the integument, platysma, and fascia; it then passes beneath the digastric and stylohyoid muscles and part of the submandibular gland, but superficial to the hypoglossal nerve.
