Suprahyoid & Infrahyoid Muscles (Ant. Neck) Flashcards
Origin of stylohyoid
Styloid process of temporal bone
Insertion of stylohyoid
Lateral aspect of hyoid
Innervation of stylohyoid
Styloid branch of facial nerve (CN:7)
Action of stylohyoid
Initiates swallowing (pulls hyoid posterior and superior)
Origin of anterior belly of digastric muscle
Digastric fossa of mandible
Origin of posterior belly of digastric muscle
Mastoid process of temporal bone
Insertion of anterior and posterior digastric muscle
Both connected by intermediate tendon, to hyoid bone via fibrous sling
Innervation of anterior belly of digastric
Inferior alveolar nerve
> branch of mandibular nerve
> > derived from trigeminal nerve (CN:5)
Innervation of posterior digastric muscle
Digastric branch of facial nerve (CN:7)
Origin of mylohyoid
Mylohyoid line of mandible
Insertion of mylohyoid
Hyoid
Innervation of mylohyoid
Inferior alveolar
> branch of mandibular nerve
> > derived from trigeminal nerve
Origin of geniohyoid
Inferior mental spine of mandible
Insertion of geniohyoid
Hyoid bone
Innervation of hyoid bone
C1 that runs with Hypoglossal (CN:12)