muscle charts (head/neck/thorax) COPY Flashcards
1
Q
rectus capitis posterior major
A
- attachments: spinous process C2 > lateral aspect inferior nuchal line
- function: extension, ipsilateral rotation
- innervation: suboccipital n.
2
Q
rectus capitis posterior minor
A
- attachments: tubercle on posterior arch C1 > medial aspect inferior nuchal line
- function: extension
- innervation: suboccipital n.
3
Q
obliquus capitis inferior (inferior oblique)
A
- attachments: spinous process C2 > transverse process C1
- function: ipsilateral rotation
- innervation: suboccipital n.
4
Q
obliquus capitis superior (superior oblique)
A
- attachments: transverse process C1 > area between superior and inferior nuchal lines on occipital bone
- function: extension, lateral flexion
- innervation: suboccipital n.
5
Q
anterior digastric
A
- attachments: digastric foss of mandible > intermediate tendon
- greater cornu of hyoid, inferior border of mandible near sumphysis > intermediate tendon and body and cornu of hyoid
- action: depression of mandible, elevation of hyoid
- innervation: mylohyoid branch of inferior alveolar n. (from CN V3)
- suprahyoid
6
Q
posterior digastric
A
- attachments: temporal mastoid notch > intermediate tendon
- greater cornu of hyoid, mastoid process > intermediate tenon and body and cornu of hyoid
- action: depression of mandible, elevation of hyoid
- innervation: facial n. (CN VII)
- suprahyoid
7
Q
geniohyoid
A
- attachments: inferior genial tubercle of mandible > anterior aspect of body of hyoid
- median ridge of mandible > body of hyoid
- action: elevation of tongue and hyoid, depression of mandible
- innervatoin: ventral ramus of C1 via CN XII
- suprahyoid
8
Q
longus capitis
A
- attachments: anterior tubercle of transverse processes of cervical vertebrae > basilar occipital bone
- action: flexion of head and neck (bilateral), ipsilateral rotation (unilateral)
- innervation: ventral rami of cervical spinal n. (C1-3)
9
Q
longus colli (L. neck)
A
- attachments: cervical vertebral bodies > cervical vertebral bodies and transverse processes
- actoin: flexion/lateral flexion of neck, ipsilateral rotation
- innervation: ventral rami of cervical spinal n. (C2-7)
10
Q
mylohyoid
A
- attachments: mylohyoid line of mandible > midline rache and anterior aspect of hyoid
- function: elevation of floor of oral cavity
- innervation: mylohyoid branch of inferior alveolar n. (from CN V3)
- suprahyoid
11
Q
omohyoid (G. omos, shoulder)
A
- attachments: superior border of scapula medial to scapular notch > lateral aspect of hyoid, passing through intermediate tendon sling loosely associated with clavicle and first rib
- actions: depression of hyoid
- innervation: ansa cervicalis (C1-3)
- infrahyoid
12
Q
anterior scalene
A
- attachments: anterior tubercles of middle cervical vertebrae > scalene tubercle of 1st rib
- action: elevation of first rib in forced inspiration, flexion/lateral flexion/contralateral rotation of neck
- innervation: lower ventral rami of cervical spinal n.
13
Q
middle scalene
A
- attachments: transverse processes of cervical vertebrae > first rib
- action: elevation of first rib in forced inspiration, lateral flexion/contralateral rotation of neck
- innervation: lower ventral rami of cervical spinal n.
14
Q
posterior scalene
A
- attachments: lower cervical transverse processes > 2nd rib
- action: elevation of rib in forced inspiration, lateral flexion/contralateral rotation of neck
- innervation: ventral rami of cervical spinal n. (C6-8)
15
Q
sternocleidomastoid
A
- attachments: lateral aspect of mastoid process, superior nuchal line > manubrium, medial 2/3 of clavicle
- action: flexion/ipsilateral lateral flexion/extension of head and neck, contralateral rotation of head
- innervation: accessory n. (CN XI), C1-2
16
Q
sternohyoid
A
- attachments: posterior side of proximal clavicle, adjacent manubrium > inferior border of body of hyoid
- action: depresses hyoid
- innervation: ansa cervicalis (C1-3)
- infrahyoid
17
Q
sternothyroid
A
- attachments: posterior aspect of manubrium, costal cartilage of first rib > thyroid lamina
- action: depression of elevated larynx
- innervation: ansa cervicalis (C1-3)
- infrahyoid
18
Q
stylohyoid
A
- attachments: styloid process of temporal bone > greater cornu of hyoid bone
- action: elevation/retraction of hyoid
- innervation: facial n. (CN VII)
- suprahyoid