Innervations of Neck Muscles Flashcards
Trapezius m.
CN XI
SCM m.
CN XI
Anterior scalene m.
C4-6
Middle scalene m.
C3-8
Posterior scalene m.
C6-8
Mylohyoid m.
Mylohyoid n. (from mandibular n.)
Geniohyoid m.
C1 via CN XII
Anterior belly of digastric m.
Mylohyoid n. (from mandibular n.)
Posterior belly of digastric m.
CN VII
Stylohyoid m.
CN VII
Sternohyoid m.
Ansa cervicalis
Sternothyroid m.
Ansa cervicalis
Thyrohyoid m.
C1 via CN XII
Omohyoid m.
Ansa cervicalis
Platysma m.
CN VII
All pharyngeal ms.
What is the exception?
Pharyngeal branches from CN X
Stylopharyngeus m. - CN IX
All laryngeal ms.
What is the exception?
Recurrent laryngeal n.
Cricothyroid m.
Stylopharyngeus m.
CN IX
Cricothyroid m.
External laryngeal n.
All anterior vertebral column ms.
Anterior rami of cervical spinal nerves.
Suprahyoid ms. (4)
Mylohyoid m.
Geniohyoid m.
A/P bellies of digastric m.
Stylohyoid m.
Infrahyoid ms. (4)
Sternohyoid m.
Sternothyroid m.
Thyrohyoid m.
Omohyoid m.
All of the infrahyoid ms. are innervated by ansa cervicalis, except:
Thyrohyoid m. (C1 via CN XII)
Which muscles are innervated by CN VII? (3)
Posterior belly of digastric m.
Stylohyoid m.
Platysma m.
Muscles innervated by C1 via CN XII (2)
Geniohyoid m.
Thyrohyoid m.
Which muscles are innervated by Ansa cervicalis? (3)
Sternohyoid m.
Sternothyroid m.
Omohyoid m.
Which muscles are innervated by mylohyoid n.? (2)
Mylohyoid m.
Anterior belly of digastric m.
