overview+ intro

Question 1

posterior ramus of the spinal nerve supplies the

Answer 1

muscles and skin of the back

Question 2

ramus supplying the anterolateral body wall and all the muscles and skin of the limbs

Answer 2

anterior ramus of the spinal nerve

Question 3

which of the rami of spinal nerves form plexuses (i.e. brachial, cervical, lumbar, sacral)

Answer 3

anterior ramus

Question 4

compression of fifth lumbar and first sacral

Answer 4

pain down the back and lateral side of leg to sole of foot = sciatica

Question 5

presure on anterior motor roots

Answer 5

muscle weakness

Question 6

compression/injury to fifth lumbar motor root

Answer 6

weak dorsiflexion of ankle

Question 7

pressure on first sacral motor root

Answer 7

weakness of plantarflexion, ankle jerk reflex may be diminished or absent

Question 8

spinal tap cannot be performed on people with intracranial tumor. why?

Answer 8

loss of CSF can cause displacement of herniation of structures (i.e. cerebrum into foramen magnum)

Question 9

what is the last anatomical structure the lumbar needle will puncture before reaching the subarachnoid space

Answer 9

arachnoid mater