lecture 3 notes Flashcards
spinal nerves originate at
the spinal cord
what do the spinal nerves connect
peripheral nervous system to CNS
How many spinal nerves are there?
31 pairs
spinal nerves groups
cervical - 8
thoracic - 12
lumbar- 5
sacral- 5
coccygeal-1
ventral nerve roots are …
motor units
dorsal nerve roots..
sensory units
what does the ventral rami innervate
innervates ventral body wall and all limbs parts
what does the dorsal rami innervate
innervate skin and muscles of back
what are the functions of ligaments
resist and protect from motion
where does the cauda equina start
L1-L2
lumbar injection for epidural anesthesia just goes to the
epidural fat
where do the ligamentum flavum and posterior longitundial ligament live
spinal canal
ligamentum flavum can …
hypertrophy
hypertrophy can lead to
spinal stenosis
where is the root of the scapular spine
medial boarder of scapula at the spine
bones associated with the scapula
sternum, ribs, clavicle, verebrae
which tubercle is more lateral on the humerus
greater tubercle
where is the lesser tubercle located
medial lip of the humers
what muscles cause scapular depression
lower traps
what muscles cause scapular elevation
levator scapulae
upper trap
what muscles cause protraction of the scapula
pectoralis major and minor
serratus anterior
what muscles cause retraction of the scapula
rhomboids and middle traps
what muscles cause downward rotation of the scapula
levator scapulae and rhomboids
what muscles csue upward rotation of the scapula
upper traps , serratus anterior
lower traps
