Anterolateral Neck Muscles Flashcards
Anterior Digastric (attachments)
digastric fossa of mandible to intermediate tendon (great cornu of hyoid)
Anterior Digastric (action)
depresses mandible or elevates hyoid
Anterior Digastric (innervation)
mylohyoid branch of inferior alveolar n. (from CN V3)
Posterior Digastric (attachment)
temporalmastoid notch to intermediate tendon (great cornu of hyoid)
Posterior Digastric (action)
depresses mandible or elevates hyoid
Posterior Digastric (innervation)
facial n.
Geniohyoid (attachments)
inferior genial tubercle of mandible to anterior aspect of body of hyoid (median ridge of mandible to body of hyoid)
Geniohyoid (action)
elevation of tongue & hyoid or depresses mandible
Geniohyoid (innervation)
ventral ramus of C1 via CN XII
Longus Capitis (attachments)
anterior tubercles of transverse processes of cervical vertebrae to basilar occipital bone
Longus Capitis (action)
flexion of head & neck (bilateral), ipsilateral rotation (unilateral)
Longus Capitis (innervation)
ventral rami of cervical spinal n.
Longus Colli (attachments)
cervical vertebral bodies to cervical vertebral bodies & transverse processes
Longus Colli (action)
flexion, lateral flexion of neck & ipsilateral rotation
Longus Colli (innervation)
ventral rami of cervical spinal n. (C2-7)
Mylohyoid (attachments)
mylohyoid line of mandible to midline raphe & anterior aspect of body of hyoid
Mylohyoid (action)
elevation of oral cavity floor
Mylohyoid (innervation)
mylohyoid branch of inferior alveolar n. (from CN V3)
Omohyoid (attachments)
superior border of scapula medial to to scapular notch to lateral aspect of hyoid passing through an intermediate tendon sling loosely associated w/ clavicle & 1st rib
Omohyoid (action)
depression of hyoid
Omohyoid (innervation)
ansa cervicalis (C1-3)
Anterior Scalene (attachments)
anterior tubercles of middle cervical vertebrae to scalene tubercle of 1st rib
Anterior Scalene (action)
elevates 1st rib (during forced inspiration), flexion, lateral flexion & contralateral rotation of neck
Anterior Scalene (innervation)
lower ventral rami of cervical spinal n.
Middle Scalene (attachments)
transverse processes of cervical vertebrae to 1st rib
Middle Scalene (action)
elevates 1st rib (during forced inspiration), flexion, lateral flexion & contralateral rotation of neck
Middle Scalene (innervation)
lower ventral rami of cervical spinal n.
Posterior Scalene (attachments)
lower cervical transverse processes to 2nd rib
Posterior Scalene (action)
elevates rib (during forced inspiration), lateral flexion & contralateral rotation of neck
Posterior Scalene (innervation)
ventral rami of cervical spinal n. (C6-8)
Sternocleidomastoid (attachments)
lateral aspect of mastoid process & superior nuchal line to manubrium & medial 1/3rd of clavicle
Sternocleidomastoid (action)
flexion, ipsilateral lateral flexion & extension of head & neck and contralateral rotation of head
Sternocleidomastoid (innervation)
accessory n., C1 & 2
Sternohyoid (attachments)
posterior side of proximal clavicle & adjacent manubrium to inferior border of body of hyoid
Sternohyoid (action)
depresses hyoid
Sternohyoid (innervation)
ansa cervicalis (C1-3)
Sternothyroid (attachments)
posterior aspect of manubrium & costal cartilage of 1st rib to thyroid lamina
Sternothyroid (action)
depression of elevated larynx
Sternothyroid (innervation)
ansa cervicalis (C1-3)
Stylohyoid (attachments)
styloid process of temporal bone to greater cornu of hyoid bone
Stylohyoid (action)
elevates & retracts hyoid
Stylohyoid (innervation)
facial n.
Thyrohyoid (attachments)
thyroid lamina to greater horn of hyoid bone
Thyrohyoid (action)
depression of hyoid or elevation of thyroid cartilage
Thyrohyoid (innervation)
ventral ramus of C1 via XII