Anterolateral Neck Muscles (ID, supra/infra, innerv, scalene attachments)

Question 1

Anterior digastric

Answer 1

Suprahyoid

Innervation - mylohyoid branch of the inferior alveolar nerve (CN V3, trigeminal mandibular)

Question 2

Posterior digastric

Answer 2

Suprahyoid

Innervation - facial nerve

Question 3

Geniohyoid

Answer 3

Suprahyoid

Innervation - ventral ramus of C1 via CN XII (hypoglossal)

Question 4

Mylohyoid

Answer 4

Suprahyoid

Innervation - mylohyoid branch of the inferior alveolar nerve (CN V3, trigeminal mandibular)

Question 5

Omohyoid

Answer 5

Infrahyoid

Innervation - ansa cervicalis (C1-3)

Question 6

Anterior scalene

Answer 6

attachments- from the anterior tubercles of middle cervical vertebrae to the scalene tubercle of the 1st rib

innervation- lower ventral rami of cervical spinal n.

Question 7

Middle scalene

Answer 7

attachments- from the transverse processes of cervical vertebrae to 1st rib

innervation- lower ventral rami of cervical spinal n.

Question 8

Posterior scalene

Answer 8

attachments- from lower cervical transverse processes to the 2nd rib

innervation- ventral rami of cervical spinal n. (C6-8)

Question 9

Sternocleidomastoid

Answer 9

attachments- from the lateral aspect of the mastoid process & superior nuchal line to the manubrium & medial 1/3rd of the clavicle

function- flexion, ipsilateral lateral flexion, and extension of the head & neck, & contralateral rotation of the head

innervation- accessory n & C1, C2

Question 10

Sternohyoid

Answer 10

Infrahyoid

Innervation - ansa cervicalis (C1-3)

Question 11

Sternothyroid

Answer 11

Infrahyoid

Innervation - ansa cervicalis (C1-3)

Question 12

Stylohyoid

Answer 12

Suprahyoid

Innervation - facial nerve

Question 13

Thyrohyoid

Answer 13

Infrahyoid

Innervation - ventral ramus of C1 via hypoglossal CN XII

Question 14

Cricothyroid

Answer 14

Infrahyoid

Innervation - external laryngeal nerve (CN X, vagus)