test 4 Flashcards
iliocostalis cervicis
A: extension of head
O: posterior surface of ribs 1-12
I: transverse processes of c4-c6
N: posterior rami of spinal nerves c4-c8
longissimus capitis
A: extension of the head
O: transverse processes of t1-t5
I: mastoid process
N: posterior rami of spinal nerves c4-c8
longissimus cervicis
A: extension of head
O: transverse processes of t1-t5
I: transverse process of c2-c6
N: posterior rami of spinal nerves c4-c8
Longissimus thoracis
A: extension of the spinal column
O: common erector spinae tendon
I: transverse processes of t3-t12 and ribs 3-12
N: posterior rami of spinal nerves c4-c8
Multifidi
A: extension of the spinal column
O: scarum and transverse processes of lumbar through cervical vertebrae
I: spinous processes of lumbar through cervical vertebrae
N: posterior rami of spinal nerves c4-c8
semispinalis capitis
A: extension of the head and neck
O:transverse processes of c4-t6
I: between the superior and inferior nuchal lines of the occiput
N: posterior rami of spinal nerves c4-c8
Semispinalis cervicis
a: extension of the thoracic and cervical spine
O: transverse processes
I: spinous processes of vertebrae 5-8 above the origin
Semispinalis thoracis
A: extension of the head
O: spinous process of t11-l2
I: spinous processes of t2-8
N: posterior rami of spinal nerves c4-c8
spinalis capitis
A: extesnion of head and neck
O: spinous processes of c6-t1
I: spinous processes of cervical vertebrae except c1
N: lateral branch of posterior rami of spinal nerves
spinalis cervicis
A: extension of the head and neck
O: spinous processes of c6-t1
I: spinous processes of cervical vertebrae c2-c4
N: lateral branch of posterior rami of spinal nerves
splenius capitis
a: extesnion of the cervical spine
O: spinous process of c7-t4
I: mastoid process and lateral portion of the superior nuchal line
N: posterior rami of spinal nerves c4-c8
splenius cervicis
A: extension of the cervical spine
O: spinous process of c3-c6
I: transverse processes of c1-c3
N: posterior rami of spinal nerves c4-c8
Longus capitis
flexion of head and neck
O: transverse processes of c3-c6 (anterior tubercles)
I: inferior surface of the occiput
N: anterior rami of spinal nerves
longus colli
A: flexion of the head and neck
O: transverse processes of c3-c5 and bodies of c5-t3
I: tubercle on anterior arch of c1 (atlas)
n: anterior rami of spinal nerves
trapezius upper 1/3
A: bilateral extension of the c spine
O: external occipital protrubence superior rnuchal line and upper portion of the ligamentum nuchae and c7 spinous process
I: distal one third of clavicle. acromion process, and scapular spine
N: accessory nerve
levator scapula
a: elevation of medial border of the scapula
O: spinous process of c7 and transverse processes of of c1-c4
I: superior border of scapula
N: dorsal subscapular
Sternocleidomastoid
a: flexion of the cervical spine
Clavicular head: medial 1/3 of clavical and sternal head: superior sternum top of manubrium
I: mastoid process and lateral portion of the superior nuchal line of occiput
N: spinal accessory
scalene anterior
A: elevation of rib cage during inhalation
O: transverse processes of c3-c6 anterior tubercles
O: elevation of rib cage during inhalation
I: 1st rib
N: anterior rami of cervical spinal nerves
scalene middle
A: elevation of the rib cage during inhalation
O: c2-c7 transverse processes (posterior tubercles)
I: lateral to the insertion of the anterior scalene on the first rib
N: anterior rami os cervical spinal nerves
scalene posterior
elevation of the rib cage during inhalation
O: posterior tubercles of transverse processes of c5-c7
I: 2nd rib
N: anterior rami of cervical spinal nerves
inferior rectus
A: downward rotation of the eye
O: from a tendinous ring on the posterior aspect of the orbit
I: middle of inferior aspect of anterior glove
N: oculomotor nerve
superior rectus
a: upward rotation of the eye
O: from a tendinous ring on the posterior aspect of the orbit
I: middle of superior aspect of anterior glove
N: oculomotor nerve
lateral rectus
A: lateral rotation of the eye
O: from a tendinous ring on the posterior aspect o the orbit
I: middle of lateral aspect of the anterior globe
N: abducens nerve
inferior oblique
a: elevation of the globe and adduction of globe
O: from the periosteum of the maxilla
I: inferolateral quadradrant of the globe
N: oculomotor nerve
superior oblique
a: abduction of the globe and depression of the globe
O: greater wing of the sphenoid
I: superolateral quadrant of the glove
N: trochlear nerve
buccinator
depress the cheeks
corrugator supercilii
draw the eyebrows medially and inferiorly
depressor anguli oris
draws angles of mouth downward frowning
depressor labii inferioris
lowers the mouth
digastric
hyoid bone fixed: depresses mandbile (opens mouth
mandible fixed: elevate the hyoid bone and retract the mandible
gleniohyoid
opens mouth
infrahyoids
depress the hyoid bone and thyroid cartilage
levator anguli oris
raises each side of the mouth bilateral muscle
levator labii superioris
elevate and protrude the upper lip bilaterally
unilaterally flex to produce a elvis like lip
masseter
elevate the mandible aids in biting
mentalis
elevates the skin of the chin
mylohyoid
opens mouth
orbicularis oculi
responsible for closing the eyelid squinting
orbicularis oris
puckers lips
occiptofrontalis
frontalis: raise the eyebrows and wrinkle the forehead
occipitalis: anchor and retract the galea posteriorly
platysma:
assist to depress the mandible
tighten the fascia on the neck and drqw down the corners of the mouth
procerus
wrinkles the nose
ptyerygoid medial
bilateral elevate and protract the mandible
unilateral laterally deviate the mandible to the opposite side
ptyrygoid lateral
unialterally laterally deviate the mandible to the opposite side
bilaterally protract the mandible
