Neck Flashcards
Origin of Platysma
fascia covering superior part of pectoralis major
insertion of platysma
base of mandible, skin of lower part of face
action of platysma
assist to depress the mandible
tighten the fascia of the neck
draw down corners of the mouth
innervation of platysma
CN VII (facial nerve)
origin of sternocleidomastoid
sternal head - top of manubrium
clavicular head - medial clavicle
insertion of sternocleidomastoid
mastoid process of temporal bone and superior nuchal line of occiput
action of sternocleidomastoid
unilaterally - laterally flex the head and neck to the same side, rotate the head and neck to the opposite side
bilaterally - flex the neck, assist to elevate the ribcage during inhalation
innervation of sternocleidomastoid
CN XI (spinal accessory nerve), C2, C3
origin of anterior scalene
TP of 3rd to 6th cervical vertebrae
insertion of anterior scalene
1st rib
action of anterior scalene
unilaterally - with ribs fixed: laterally flex head and neck to the same side, rotate head and neck to opposite side
bilaterally - elevate ribs during inhalation, flex the head and neck
innervation of anterior scalene
C3-8
origin of posterior scalene
TP of 6th to 7th cervical vertebrae
insertion of posterior scalene
2nd rib
action of posterior scalene
unilaterally - with ribs fixed: laterally flex head and neck to the same side, rotate head and neck to opposite side
bilaterally - elevate ribs during inhalation
innervation of posterior scalene
C3 - 8
origin of middle scalene
TP C2 - C7
insertion of middle scalene
1st rib
action of middle scalene
unilaterally - with ribs fixed: laterally flex head and neck to the same side, rotate head and neck to opposite side
bilaterally - elevate ribs during inhalation
innervation of middle scalene
C3-C8
origin of splenius capitis
ligamentum nuchae and SP of C7 - T4
insertion of splenius capitis
mastoid process and superior nuchal line of occiput
action of spelnius capitis
unilaterally - rotate and laterally flex the head and neck to the same side
bilaterally - extend the head and neck
innervation of splenius capitis
cervical nerves
origin of splenius cervicis
SP of T3 - T6
insertion of splenius cervicis
TP of C1 - C3
action of splenius cervicis
unilaterally - rotate and laterally flex the head and neck to the same side
bilaterally - extend the head and neck
innervation of splenius cervicis
cervical nerves
origin of semispinalis capitis
TP of C4 - T5
insertion of semispinalis capitis
between the superior and inferior nuchal line of the occiput
action of semispinalis capitis
extend the vertebral column and head
innervation of semispinalis capitis
cervical nerves
origin of semispinalis cervicis
TP of T1 - T5
insertion of semispinalis cervicis
SP of C1 - C5
action of semispinalis cervicis
extend the vertebral column
innervation of semispinalis cervicis
cervical nerves
origin of rectus capitis posterior major
SP of C2 (axis)
insertion of rectus capitis posterior major
inferior nuchal line of occiput
action of rectus capitis posterior major
rock and tilt head back into extension
rotate head to the same side
innervation of rectus capitis posterior major
suboccipital nerve
origin of rectus capitis posterior minor
tubercle of the posterior arch of C1 (atlas)
insertion of rectus capitis posterior minor
inferior nuchal line of occiput
action of rectus capitis posterior minor
rock and tilt head back into extension
innervation of rectus capitis posterior minor
suboccipital nerve
origin of oblique capitis superior
TP of atlas (C1)
insertion of oblique capitis superior
between nuchal lines of occiput
action of oblique capitis superior
rock and tilt head back into extension
laterally flex the head to the same side
innervation of oblique capitis superior
suboccipital nerve
origin of oblique capitis inferior
SP of C2 (axis)
insertion of oblique capitis inferior
TP of C1 (atlas)
action of oblique capitis inferior
rotate head to the same side
innervation of oblique capitis inferior
suboccipital nerve