Expansion
Some Guys Marry, Divorce, Get Married
Mnemonic
“My Grandma Sings Daily”, the four muscles above the hyoid that elevate it during swallowing:
- M - Mylohyoid, supplied by V3
- G - Geniohyoid, supplied by C1 travelling with the hypoglossal nerve
- S - Stylohyoid, supplied by the facial nerve
- D - Digastric, whose anterior belly is V3 and posterior belly is facial
The digastric splits its nerve supply between its two bellies, which follows their different pharyngeal arch origins: the anterior belly is arch one and the posterior belly is arch two.
The infrahyoid strap muscles depress the hyoid and are supplied by the ansa cervicalis (C1 to C3), except thyrohyoid, which like geniohyoid takes C1.
Expansion
- S - Stylohyoid
- G - Geniohyoid
- M - Mylohyoid
- D - Digastric