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136 Cards in this Set

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trapezius-- origin
medial third of superior nuchal line, external occipital protuberance, ligamentum nuchae, spinous process of the 7th cervical and all thoracic vertebrae
trapezius-- insertion
lateral 3rd of clavicle, acromion process and spine of scapula
trapezius-- action
stabilizes, raises, retracts and rotates the scapula. the superior fibers elevate, the middle fibers retract, and the inferior fibers depress the scapula. together the upper and lower fibers rotate the arm.
trapezius-- innervation
spinoaccessory (C11) and ventral rami of C3, C4
latissimus dorsi-- origin
indirect attachment through lumbodorsal fascia into spinous process of lower 6 thoracic and lumbar vertebrae, lower 3 to 4 ribs, and iliac crest
latissimus dorsi-- insertion
in floor of intertubercular groove of humerus
latissimus dorsi-- action
extends, adducts, and medially rotates the arm; draws the shoulder downward and backward
latissimus dorsi-- innervation
thoracodorsal nerve (C6-C8)
rhomboid major-- origin
spinous process of the 2nd through 5th thoracic vertebrae
rhomboid major-- insertion
medial border of scapula between the spine and the inferior angle
rhomboid major-- action
adducts, retracts, elevates, and rotates the scapula so that the glenoid cavity faces downward and stabilizes the scapula
rhomboid major-- innervation
dorsal scapular nerve (C5)
rhomboid minor-- origin
spinous processes of the 7th cervical and 1st thoracic vertebrae
rhomboid minor-- insertion
medial border of the scapula at the root of the spine
rhomboid minor-- action
retracts and stabilizes the scapula, elevates the vertebral border, and rotates the scapula to depress the inferior angle
rhomboid minor-- innervation
dorsal scapular nerve (C5)
levator scapulae-- origin
transverse processes of the first 4 cervical vertebrae
levator scapulae-- insertion
vertebral border of the scapula between the superior angle and the spine
levator scapulae-- action
raises scapula and draws it medially. with the scapula fixed, bends the neck laterally and rotates it to the same side
levator scapulae-- innervation
3rd and 4th cervical spinal nerves and dorsal scapula nerve (C3-C5)
deltoid-- origin
anterior portion-- superior surface of lateral third of clavicle, middle portion-- lateral border of acromion process of scapula, posterior portion-- lower border of the crest of the spine of the scapula
deltoid-- insertion
deltoid tuberosity of the humerus
deltoid-- action
anterior portion-- flexion and medial rotation of the arm, middle portion-- abducts the arm, posterior portion-- extends and laterally rotates the arm
deltoid-- innervation
axillary nerve (C5, C6)
teres major-- origin
lower third of the posterior surface of the lateral border of the scapula
teres major-- insertion
medial lip of the bicipital (intertubercular) groove of the humerus
teres major-- action
medially rotates and adducts the arm
teres major-- innervation
lower subscapular nerve (C6, C7)
teres minor-- origin
upper two thirds of the dorsal surface of the axillary border of the scapula
teres minor-- insertion
the capsule of the shoulder joint and the inferior part of the greater tubercle of the humerus
teres minor-- action
laterally rotates the arm and draws the humerus toward the glenoid cavity
teres minor-- innervation
axillary nerve (C5)
subscapularis-- origin
subscapular fossa of the scapula
subscapularis-- insertion
lesser tubercle of the humerus and the ventral part of the capsule of the shoulder joint
subscapularis-- action
medially rotates and stabilizes the head of the humerus in the glenoid cavity
subscapularis-- innervation
upper and lower subscapular nerves (C5, C6)
serratus anterior-- origin
outer surfaces and superior borders of the first 8 or 9 ribs
serratus anterior-- insertion
anterior surface of the medial border of the scapula
serratus anterior-- action
abducts and protracts the scapula, rotates it so that the glenoid cavity faces cranially. it also holds the scapula firmly against the thorax
serratus anterior-- innervation
long thoracic nerve (C5-C7)
serratus posterior inferior-- origin
spinous process of the last 2 thoracic and upper 3 lumbar vertebrae (T11-L3)
serratus posterior inferior-- insertion
inferior borders and outer surfaces of lower four ribs just lateral to the angles
serratus posterior inferior-- action
depresses last four ribs (controversial)
serratus posterior inferior-- innervation
the 9th-12th spinal nerves (S9-S12)
splenius capitis-- origin
fascia and spinous processes of 7th cervical and first 4 thoracic vertebrae
splenius capitis-- insertion
lateral one third of the superior nuchal line and the mastoid process of the temporal bone
splenius capitis-- action
extends and hyperextends the head. contraction of only one side laterally flexes and rotates the head and neck
splenius capitis-- innervation
dorsal rami of the middle cervical nerves (C4-C8)
splenius cervicis-- origin
spinous processes of 3rd through 6th thoracic vertebrae
splenius cervicis-- insertion
posterior tubercles of the transverse processes of the first 3 cervical vertebrae (C1-C3)
splenius cervicis-- action
the muscles extend and hyperextend the neck. contraction of only one side laterally flexes and rotates the neck and head.
splenius cervicis-- innervation
dorsal rami of the lower cervical nerves (C4-C8)
iliocostalis lumborum-- origin
medial and lateral sacral crests and medial part of iliac crest
iliocostalis lumborum-- insertion
angles of all ribs
iliocostalis lumborum-- action
extension, lateral flexion of vertebral column, lateral movement of pelvis
iliocostalis lumborum-- innervationi
dorsal rami of the thoracic and lumbar spinal nerves
iliocostalis thoracis-- origin
angles of lower 6 ribs medial to the iliocostalis lumborum
iliocostalis thoracis-- insertion
superior border at the angles of the upper 6 ribs
iliocostalis thoracis-- action
extension, lateral flexion of vertebral column
iliocostalis thoracis-- innervation
dorsal rami of the thoracic spinal nerves
iliocostalis cervicis-- origin
angles of the 3rd-6th ribs
iliocostalis cervicis-- insertion
posterior tubercles of the transverse processes of the 4th-7th cervical vertebrae (C4-C7)
iliocostalis cervicis-- action
extension, lateral flexion of the vertebral column
iliocostalis cervicis-- innervation
dorsal rami of the lower cervical and thoracic spinal nerves
longissimus cervicis-- origin
transverse processes of upper 5 thoracic vertebrae
longissimus cervicis-- insertion
posterior tubercles of the transverse processes of the 2nd-6th cervical vertebrae (C2-C6)
longissimus cervicis-- action
extension and lateral flexion of vertebral column
longissimus cervicis-- innervation
dorsal rami of thoracic spinal nerve
longissimus capitis-- origin
transverse processes of upper 5 thoracic vertebrae (T1-T5) and articular processes of lower 4 cervical vertebrae
longissimus capitis-- insertion
posterior aspect of mastoid process of temporal bone
longissimus capitis-- action
extends and rotates the head
longissimus capitis-- innervation
dorsal rami of middle and lower cervical nerves
longissimus thoracis-- origin
aponeurosis and transverse processes of lumbar and lower thoracic vertebrae
longissimus thoracis-- insertion
transverse processes of all thoracic vertebrae and between tubercles and angles of lower ten ribs
longissimus thoracis-- action
extension and lateral flexion of vertebral column
longissimus thoracis-- innervation
dorsal rami of thoracic and lumbar spinal nerves
spinalis capitis-- origin
transverse processes of upper 7 thoracic (T1-T7) and articular processes of 4th-7th cervical vertebrae (C4-C7)
spinalis capitis-- insertion
between superior and inferior nuchal lines of the occipital bone
spinalis capitis-- action
extends the vertebral column
spinalis capitis-- innervation
dorsal rami of lower cervical and thoracic spinal nerves
spinalis cervicis-- origin
spinous process of 1st and 2nd thoracic (T1 & T2) and 7th cervical vertebrae (C7)
spinalis cervicis-- insertion
spinous processes of 2nd and 3rd cervical vertebrae (C2 & C3)
spinalis cervicis-- action
extends the vertebral column
spinalis cervicis-- innervation
dorsal rami of lower cervical and thoracic spinal nerves
spinalis thoracis-- origin
spinous processes of the lower 2 thoracic and upper 2 lumbar vertebrae (T11-L2)
spinalis thoracis-- insertion
spinous process of upper 8 thoracic vertebrae (T1-T8)
spinalis thoracis-- action
extends the vertebral column
spinalis thoracis-- innervation
dorsal rami of thoracic and lumbar spinal nerves
semispinalis capitis-- origin
transverse process of the upper 6 thoracic (T1-T6) and 7th cervical (C7) and articular processes of the 4th-6th cervical vertebrae (C4-C6)
semispinalis capitis-- insertion
between the superior and inferior nuchal lines of the occipital bone
semispinalis capitis-- action
extension of the head and rotation to the opposite side
semispinalis capitis-- innervation
dorsal rami of the first 6 cervical spinal nerves (C1-C6)
semispinalis cervicis-- origin
transverse processes of upper 6 thoracic (T1-T6) and articular processes of lower 4 cervical vertebrae (C4-C7)
semispinalis cervicis-- insertion
spinous process of 2nd-5th cervical vertebrae (C2-C5)
semispinalis cervicis-- action
extension and rotation of vertebral column
semispinalis cervicis-- innervation
dorsal rami of lower 3 cervical spinal nerves (C4-C7)
semispinalis thoracis-- origin
transverse processes of lower 6 thoracic vertebrae (T7-T12)
semispinalis thoracis-- insertion
spinous processes of the lower 2 cervical and upper 4 thoracic vertebrae (T1-T4)
semispinalis thoracis-- action
extension and rotation of vertebral column
semispinalis thoracis-- innervation
dorsal rami of upper 6 thoracic spinal nerves (T1-T6)
multifidus-- origin
articular processes of the last 4 cervical, transverse processes of all thoracic, and mammillary processes of lumbar vertebrae, the posterior superior iliac spine posterior sacroiliac ligaments, and dorsal surface of sacrum adjacent to sacral spiinous processes
multifidus-- insertion
spinous process of the vertebra above the vertebra of origin
multifidus-- action
extend and rotate vertebral column
multifidus-- innervation
dorsal rami of spinal nerves
rotatores-- origin
transverse processes of each vertebrae
rotatores-- insertion
short head: base of spinous process of next vertebrae above, long head: base of spinous process of second vertebra above
rotatores-- action
extend and rotate the vertebral column
rotatores-- innervation
dorsal rami of spinal nerves
oblique capitis superior-- origin
superior surface of transverse process of atlas
oblique capitis superior-- insertion
occipital bone between inferior and superior nuchal lines
oblique capitis superior-- action
bends the head backward and laterally to the same side
oblique capitis superior-- innervation
dorsal ramus of the 1st cervical (suboccipital) nerve (C1)
oblique capitis inferior-- origin
spinous process and upper lamina of axis
oblique capitis inferior-- insertion
transverse process of the atlas
oblique capitis inferior--action
rotates head
oblique capitis inferior-- innvervation
dorsal ramus of the 1st cervical (suboccipital) nerve (C1)
rectus capitis posterior major-- origin
spinous process of axis
rectus capitis posterior major-- insertion
lateral portioin of inferior nuchal line of occipital bone
rectus capitis posterior major-- action
extends and rotates the head toward the same side
rectus capitis posterior major-- innervation
dorsal ramus of the suboccipital nerve (C1)
rectus capitis posterior minor-- origin
posterior tubercle of atlas
rectus capitis posterior minor-- insertion
median portion of inferior nuchal line of occipital bone
rectus capitis posterior minor-- action
extends the head
rectus capitis posterior minor-- innervation
dorsal ramus of 1st cervical (suboccipital) nerve (C1)
gluteus maximus-- origin
posterior gluteal line of ilium, adjacent posterior surface of sacrum and coccyx, sacrotuberous ligament and aponeurosis of erector spinae muscles
gluteus maximus-- insertion
iliotibial tract of fascia lata and gluteal tuberosity of femur
gluteus maximus-- action
upper part: extends and laterally rotates thigh, lower part: extends, laterally rotates thigh and assists in raising the trunk from a flexed position. also assists in adduction of the hip joint
gluteus maximus-- innervation
inferior gluteal nerve (L5-S2)
piriformis-- origin
pelvic surface of the sacrum between the 1st-4th sacral foramina and sacrotuberous ligament
piriformis-- insertion
superior border of the greater trochanter of the femur
piriformis-- action
laterally rotates thigh at the hip joint and abducts thigh
piriformis-- innervation
anterior rami of S1, S2
quadratus femoris-- origin
upper part of the lateral border of the ischial tuberosity
quadratus femoris-- insertion
trochanteric crest of femur
quadratus femoris-- action
laterally rotates the thigh at the hip joint
quadratus femoris-- innervation
brance from sacral plexus (L5, S1)