2nd Order Questions
Serratus Anterior
action: stabilize scapula
innervation:long thoraic nerve
origin: ribs
insertion: scapula
what does the axial skeleton consist of
skull, rib cage, vertebreal column
annulous fibrosis
levator scapulae
elevate scapula and bend neck
spinal reflex arc
pathway of sensory impluses from receptors to effectors without first going to the brain
oblique capitis superior
extends and laterally flexes the head
suboccipital nerve
sagittal plane, coronal, horizontal
body into left and right
body into anterior and posterior
body into superior and inferior halves
how are bones classified?
by shape: short, long, irregular, flat
teres major
laterally rotates the arm
monosynaptic
sensory neurons synapse directly w/ a motor neuron
deltoid
medially rotates the arm and abducts
axillary nerve
borders and action of triangular auscultation
hearing breath sounds easier
trapezius, scapula, latissimus dorsi
function of diaphysis
weight support
levator costarum
elevates the ribs
function of dorsal root
to carry sensory information to the spinal cord
rectus capitis posterior major
extends head
subocciptal nerve
what structure does the spinal cord pass through in all vertebrae
vertebreal foramen
how does information get up and down the spinal cord
ascending and descending tracts (fasculi)
innverate the leg, nothing to do with the gluteal region
function of ventral root
carry motor information from spinal cord to the muscle and glands
multifudus
extends and rotate vertebral column towards the opposite side.
anterior longtitudinal ligament
posterior longtiduinal ligament
Anterior side, occipital bone to sacrum, stabilizes and helps prevent hyperextension.
posterior side, C2 to sacrum, reinforces disk and helps limit hyperflexion.
where would i find metaphysis? what other bone structure does this region contian?
between the eipiphysis and diaphysis
epiphyseal plate
anterior horn
posterior horn
cell bodies of somatic motor neurons
axons of our sensory neurons
meaning of girdles
girdles connect the axial skeleton to the appendicular skeleton