Block 1 Flashcards
(231 cards)
What accompanies downward and lateral displacement of scapula?
Narrowing of inferior scapulohumeral angle
Injury to what nerve causes weakness of rhomboids?
dorsal scapular nerve
What nerve is injured if weakness during medial rotation and adduction of humerus?
thoracodorsal nerve (latissimus dorsi injury)
complication of cisternal puncture procedure
injure vertebral artery, compress greater occipital nerve, compress suboccipital nerve
Large tumor in suboccipital region compresses nerves that do what?
parasthesia of skin over neck and head
What protein is likely missing in skeletal contraction if tropomyosin can not be removed?
troponin
What disorder blocks ACh receptors at neuromuscular junctions?
Myasthenia Gravis
Presentation of Myasthenia Gravis
droop of eyelid, double vision, swallow difficulty
What disease causes muscles to undergo destructive atrophy (change to fat and connective tissue)?
Muscular Dystrophy
What disease presents in early childhood and involves a mutation for dystrophin?
Duchenne muscular dystrophy
Defect of dystrophin in DMD cause what to occur?
sarcolemma tears in muscle
calcium influx causes cell degeneration/death
myocytes get replaced with fat and connective tissue
Characterization of Becker’s Muscular Dystrophy
slow progression of pelvic & leg muscle weakness
Positioning of lumbar puncture/spinal cord & dangers
recumbent or sit with spine flexion @L3
hemorrhage or traumatic tap cause blood in sample
Indication of bacterial infectionn in CSF
reduced glucose, increased protein, elevated lymphocyte, cloudy appearance
indication of viral infection in CSF
increased protein, increased lymphocytes
indication of fungal infection CSF
reduced glucose, increased protein, increased lymphocytes, filaments in solution
What typically cause vertebral arch fractures
lateral forces compress lateral mass between occipital condyles
can also rupture transverse ligament
Hangman fracture
bony column (superior and inferior artiuclar processes of axis)
Spondylosis C2
defect/stress fracture in pars interarticularis
hyperextension of head on neck
Caudal Epidural anesthesia location
fat of sacral canal surround proximal portion of sacral nerve
sacral cornua & inferior to S4 spinour process
where do osteophytes often occur in vertebrae
margins of vertebral body
Spondylolisthesis
dislocation between adjacent vertebrae
press on or injure spinal cord/nerves
Spondylolisthesis common where
L5-S1 of IV joint
area prone due to downward tilt
pressure on spinal nerve of cauda equina
herniation of nucleus pulposus
common low back/limb pain
lower lumbar & lower cervical most common
posterolateral through annulus fibrosis
compress spinal nerve roots one number below involved disk