Back Flashcards
the trapezius is supplied by:
accessory nerve (CN 11) (motor) blood supply : superficial branch of the transverse cervical artery aka superficial cervical artery
trapezius action
upper fibers elevate the shoulder
middle fibers retract the shoulders
upper and lower fibers together rotate the scapula to allow full abduction of the arm
upper fibers elevate the shoulder
middle fibers retract the shoulders
upper and lower fibers together rotate the scapula to allow full abduction of the arm
trapezius
the latissimis dorsi is supplied by
thoracodorsal nerve and artery
latissimis dorsi action
extends, adducts, and medially rotates the humerus
acts on the shoulder joint (muscle crosses the joint)
extends, adducts, and medially rotates the humerus
acts on the shoulder joint (muscle crosses the joint)
latissimis dorsi
levator scapulae is supplied by
c3, c4 of the cervical plexus
dorsal scapular nerve (fibers from c5; from brachial plexus)
dorsal scapular artery (or the deep ranch of the transverse cervical artery)
levator scapula action
elevates the scapula
shrugs shoulders
elevates the scapula
shrugs shoulders
levator scapula
rhomboideus major and minor is supplied by:
dorsal scapular nerve (fibers from c5/brachial plexus)
dorsal scapular artery
action of rhomboids
retract the shoulder by drawing scapulae toward each other
retract the shoulder by drawing scapulae toward each other
rhomboideus major and minor
serratus posterior superior and inferior supplied by
intercostal nerves
serratus posterior superior and inferior participate in
inspiration
deep muscles of the back are innervated by
dorsal primary rami
what kind of movement is possible in the cervical portion of the spine?
extension
flexion
lateral flexion
rotation occurs from the atlantoaxial joint
most flexible
what kind of movement is possible in the thoracic region of the spin?
lateral flexion
some extension
some rotation
flexion
presence of ribs inhibits motion some
what kind of movement is possible in the lumbar region of the spine
some extension
flexion
no rotation
little lateral flexion
what is the joint between the superior articular process of one vertebrae and the inferior articular process of another called?
zygapophyseal joint
aka facet joint?
what different kinds of ligaments are found in the vertebral column?
anterior longitudinal ligament posterior longitudinal ligament ligamentum flavum supraspinous ligament ligamentum nuchae capsular ligament interspinous ligament intertransverse ligaments
transverse ligament of the atlas* cruciform ligament alar ligament apical ligament tectorial ligament/membrane --> part of the atlantooccipital joint
in the typical cervical vertebra, what do you call the upward projection of the superior aspect of the body?
uncinate processes
plane of the zygaphophyseal joint determins what?
possiblity for movement
the anterior longitudinal ligament has what effect on movement?
limits extension
the posterior longitudinal ligament has what effect on movement?
limits flexion
herniation of the nucleus pulposus is related to the weakening of what ligament?
weakening of the posterior longitudinal ligament
-posterior longitudinal ligament is associated with the “diskal” spaces
the ligamentum nuchae is an enlarged version of what ligament?
the supraspinous ligament
the most cranial part of the posterior longitudinal ligament is called:
tectoral membrane
