Practical 3 Flashcards
Sternohyoid proximal
Eternal end of clavicle and posterior surface of manubrium and sternum
Sternohyoid distal
Inferior border of body of hyoid bone
Sternohyoid innervation
Ansa cervicalis (C1-C3) from anterior rami of cervical plexus
Sternohyoid action
Depresses hyoid bone
Sternothyroid proximal
Posterior surface of manubrium of sternum and costal cartilage of first rib
Sternothyroid distal
Oblique line of thyroid cartilage
Sternothyroid innervation
Ansa cervicalis (C1-C3) from anterior rami of cervical plexus
Sternothyroid action
Depresses larynx
Thyrohyoid proximal
Oblique line of thyroid cartilage
Thyrohyoid distal
Inferior aspects of body of greater horn of hyoid bone
Thyrohyoid innervation
Branch of anterior family of C1 which accompanies hypoglossal nerve
Thyrohyoid action
Depresses hyoid bone, elevates larynx
Superior belly omohyoid proximal
Intermediate tendon of omohyoid muscle
Superior belly omohyoid distal
Body of hyoid bone
Superior belly omohyoid innervation
Ansa cervicalis (C1) from anterior rami of cervical plexus
Superior belly omohyoid action
Depresses hyoid bone
Inferior belly omohyoid proximal
Superior border of scapula medial to superior scapular notch
Inferior belly omohyoid distal
Intermediate tendon of omohyoid muscle
Inferior belly omohyoid innervation
Ansa cervicalis (C1-C3) from anterior rami of cervical plexus
Inferior belly omohyoid action
Depresses hyoid bone
Anterior belly digastric proximal
Digastric fossa of mandible
Anterior belly digastric distal
Intermediate tendon of digastric muscle
Anterior belly digastric innervation
Digastric branch of nerve to mylohyoid muscle (CN V3)
Anterior belly digastric action
Depresses mandible and elevates hyoid bone
Posterior belly digastric proximal
Mastoid notch of temporal bone
Posterior belly digastric distal
Intermediate tendon of digastric muscle
Posterior belly digastric innervation
Digastric branch of facial nerve (CN VII)
Posterior belly digastric action
Depresses mandible, elevates hyoid bone
Mylohyoid proximal
Mylohyoid line of mandible
Mylohyoid distal
Mylohyoid raphe and body of hyoid bone
Mylohyoid innervation
Nerve to mylohyoid muscle (CN V3)
Mylohyoid action
Elevates floor of mouth
Stylohyoid proximal
Styloid process if temporal bone
stylohyoid distal
body of hyoid bone
stylohyoid innervation
stylohyoid branch of facial nerve (CN VII)
stylohyoid action
elevates hyoid bone
geniohyoid proximal
inferior mental spine of mandible
geniohyoid distal
body of hyoid bone
geniohyoid innervation
first cervical nerve (C1) via hypoglossal nerve (CN XII)
geniohyoid action
depresses mandible; elevates hyoid bone
longus capitis proximal
anterior tubercles of transverse processes of C3-C6 vertebrae
longus capitis distal
Basilar part of occipital bone
longus capitis innervation
Anterior rami of first to third cervical nerves (C1-C3)
longus capitis action
flexes head
longus colli proximal
anterior aspects of C3-T3 vertebrae
longus colli distal
anterior aspects of C1-C6 vertebrae
longus colli innervation
Anterior rami of second to sixth cervical nerves (C2-C6)
longus colli action
Flexes and rotates neck at cervical vertebral joints
sternocleidomastoid sternal head proximal
anterior surfaces of manubrium of sternum
sternocleidomastoid sternal head distal
mastoid process of temporal bone and superior nuchal line of
occipital bone
sternocleidomastoid sternal head innervation
Accessory nerve (CN XI); proprioceptive fibers from anterior rami
second to fourth cervical nerves (C2-C4)
sternocleidomastoid sternal head action
Flexes and ipsilaterally laterally flexes neck; contralaterally rotates head
sternocleidomastoid clavicular head proximal
medial one third of clavicle
sternocleidomastoid clavicular head distal
mastoid process of temporal bone and superior nuchal line of
occipital bone
sternocleidomastoid clavicular head innervation
accessory nerve (CN XI); proprioceptive fibers from anterior rami
second to fourth cervical nerves (C2-C4)
sternocleidomastoid clavicular head action
flexes and laterally flexes neck; contralaterally rotates and extends head
trapezius superior fibers proximal
external occipital protuberance and superior nuchal line,
nuchal ligament, spinous process of C7 vertebra
trapezius superior fibers distal
posterior aspects of lateral 1⁄3 clavicle; acromion of scapula
trapezius superior fibers innervation
spinal accessory nerve (CN XI) anterior rami of third and fourth
cervical nerves
trapezius superior fibers action
elevates, retracts, and upwardly rotates the pectoral girdle at the
acromioclavicular and sternoclavicular joints; extends and laterally flexes head
and neck.
splenius capitis proximal
spinous processes C7-T3; nuchal ligament
splenius capitis distal
mastoid process of temporal bone and lateral one third of superior
nuchal line of occipital bone
splenius capitis innervation
Posterior rami of second and third cervical nerves
splenius capitis action
ipsilaterally rotates and bilaterally extends neck
levator scapulae proximal
Transverse process of C1-C2; posterior tubercles of transverse
processes of C3-C4
levator scapulae distal
Superior angle of scapula, medial border of scapula superior to the
spine of the scapula
levator scapulae innervation
anterior rami of third and fourth cervical nerves, dorsal scapular nerve (C5)
levator scapulae action
Elevates and downwardly rotates pectoral girdle at acromioclavicular and
sternoclavicular joints; extends and laterally flexes neck at cervical vertebral joints
anterior scalene proximal
Anterior tubercles of transverse processes of C3-C6 vertebrae
anterior scalene distal
scalene tubercle of first rib
anterior scalene innervation
anterior rami of 4th to 6th cervical nerves (C4-C6)
anterior scalene action
Flexes, rotates, and laterally flexes neck; elevates first rib
middle scalene proximal
Transverse process of C2-C7 vertebrae
middle scalene distal
superior surface of second rib
middle scalene innervation
anterior rami of third to eighth cervical nerves (C3-C8)
middle scalene action
Laterally flexes neck; elevates first rib
posterior scalene proximal
posterior tubercles of transverse processes of C4-C6
posterior scalene distal
external surface of second rib
posterior scalene innervation
Anterior rami of fourth to sixth cervical nerves
posterior scalene action
laterally flexes neck; elevates second rib
frontal belly occipitofrontalis innervation
posterior auricular nerve and temporal branches of facial nerve (CN
VII)
frontal belly occipitofrontalis action
Raises eyebrows and wrinkles forehead
occipital belly occipitofrontalis innervation
posterior auricular nerve and temporal branches of facial nerve (CN
VII)
occipital belly occipitofrontalis action
draws scalp backwards
orbicularis oculi innervation
temporal and zygomatic branches of facial nerve (CN VII)
orbicularis oculi action
closes eyelids (both orbital and palpebral part)
orbicularis oris innervation
Buccal and marginal mandibular branches of facial nerve (CN VII)
orbicularis oris action
Compresses and protrudes lips (both labial and marginal parts)
levator labii superioris innervation
Zygomatic and buccal branches of facial nerve (CN VII)
levator labii superioris action
Elevates and everts upper lip
depressor labii inferioris innervation
marginal and mandibular branch of facial nerve (CN VII)
depressor labii inferioris action
depresses lower lip
zygomaticus major innervation
zygomatic and buccal branches of facial nerve (CN VII)
zygomaticus major action
elevates angle of mouth
risorius innervation
buccal branches of facial nerve (CN VII)
risorius action
pulls angle of mouth laterally
depressor anguli oris innervation
Buccal and marginal mandibular branches of facial nerve (CN VII)
depressor anguli oris action
depresses angle of mouth
mentalis innervation
marginal mandibular branch of facial nerve (CN VII)
mentalis action
Elevates and protrudes lower lip
platysma innervation
cervical branch of facial nerve (CN VII)
platysma action
tenses skin of neck; depresses mandible
buccinator innervation
buccal branches of facial nerve (CN VII)
buccinator action
compresses cheek
temporalis proximal
temporal fossa and fascia
temporalis distal
coronoid process and ramus of mandible
temporalis innervation
anterior and posterior deep temporal nerves (CN V3)
temporalis action
Elevates and retracts mandible
masseter superficial part proximal
inferior aspect of zygomatic arch
masseter superficial part distal
lateral aspect of ramus of mandible
masseter superficial part innervation
Masseteric nerve (CN V3)
masseter superficial part action
Elevates mandible; assists in protraction of mandible
masseter deep part proximal
inferior aspect of zygomatic arch
masseter deep part distal
lateral aspect of coronoid process and ramus of mandible
masseter deep part innervation
masseteric nerve (CN V3)
masseter deep part action
elevates mandible; assists in protraction of mandible
medial pterygoid deep head proximal
medial surface of lateral pterygoid plate of sphenoid bone
medial pterygoid deep head distal
medial surface of ramus and angle of mandible
medial pterygoid deep head innervation
nerve to medial pterygoid muscle (CN V3)
medial pterygoid deep head action
laterally moves and protracts mandible
medial pterygoid superficial head proximal
maxillary tuberosity; pyramidal process of palatine bone
medial pterygoid superficial head distal
medial surface of ramus and angle of mandible
medial pterygoid superficial head innervation
nerve to medial pterygoid muscle (CN V3)
medial pterygoid superficial head action
Laterally moves and protracts mandible
lateral pterygoid superior head proximal
lateral aspect and infratemporal crest of greater wing of
sphenoid bone
lateral pterygoid superior head distal
neck of mandible
lateral pterygoid superior head innervation
nerve to lateral pterygoid muscle (CN V3)
lateral pterygoid superior head action
laterally moves and protracts mandible
lateral pterygoid inferior head proximal
lateral aspect of lateral pterygoid plate of sphenoid bone
lateral pterygoid inferior head distal
neck of mandible
lateral pterygoid inferior head innervation
nerve to medial pterygoid muscle (CN V3)
lateral pterygoid inferior head action
laterally moves and protracts mandible
levator palpebrae superioris proximal
lesser wing of sphenoid
levator palpebrae superioris distal
superior tarsus and skin of upper eyelid
levator palpebrae superioris innervation
superior branch of oculomotor nerve (CN III)
levator palpebrae superioris action
elevates upper eyelid
superior rectus proximal
common tendinous ring
superior rectus distal
upper surface of sclera
superior rectus innervation
superior branch of oculomotor nerve (CN III)
superior rectus action
elevation, adducts, and medially rotates eyeball
medial rectus proximal
common tendinous ring
medial rectus distal
medial surface of sclera
medial rectus innervation
inferior branch of oculomotor nerve (CN III)
medial rectus action
adducts eyeball
lateral rectus proximal
common tendinous ring
lateral rectus distal
lateral surface of sclera
lateral rectus innervation
abducens nerve (CN VI)
lateral rectus action
abducts eyeball
inferior rectus proximal
common tendinous ring
inferior rectus distal
sclera, on inferior aspect of eyeball, just posterior to the corneoscleral junction
inferior rectus innervation
inferior branch of oculomotor nerve (CN III)
inferior rectus action
depresses, adducts, and laterally rotates eyeball
superior oblique proximal
body of sphenoid bone
superior oblique distal
sclera on the superolateral part of posterior quadrant of eyeball
superior oblique innervation
trochlear nerve (CN IV)
superior oblique action
depresses, abducts, and medially rotates eyeball
inferior oblique proximal
maxillary part of floor of the anterior orbit
inferior oblique distal
sclera on inferolateral part of posterior quadrant of eyeball
inferior oblique innervation
inferior branch of oculomotor nerve (CN III)
inferior oblique action
elevates, abducts, and laterally rotates eyeball