Spinal Chord

Question 1

how long and wide is the spinal chord

Answer 1

42cm long and 14mm wide

Question 2

where does the spinal chord end

Answer 2

between L1 and 2 in adults and L4 in infants

Question 3

where does the spinal chord terminate

Answer 3

cone shaped structure - conus medullaris

Question 4

what is the spinal chord anchored to the coccyx by

Answer 4

filum terminale

Question 5

name the 5 regions the spinal chord is divided into

Answer 5

cervical 
thoracic 
lumbar 
scaral 
coccyx

Question 6

cervical region

Answer 6

C1-8

Question 7

Thoracic region

Answer 7

T1-T12

Question 8

LUMBAR REGION

Answer 8

L1-5

Question 9

SACRAL REGION

Answer 9

S1-5

Question 10

What does the dorsal root contain

Answer 10

axons of sensory neurons

Question 11

what does the dorsal root ganglion contain

Answer 11

cell bodies of sensory neurons

Question 12

what are the 3 ways in which the spinal chord are protected

Answer 12

vertebral column
CSF
spinal meninges

Question 13

what does a lumbar puncture involve

Answer 13

insertion of a needle into the subarachnoid space beyond L3 to withdraw CSF fluid for diagnostic testing or reducing intracranial pressure

Question 14

what is gray commissure

Answer 14

site where axons cross from one side of the CNS to the other

Question 15

sensory nuclei of the posterior gray horns contain what

Answer 15

cell bodies of spinal cord interneurons

Question 16

what do the somatic nuclei of the anterior gray horns contain

Answer 16

lower motor neurons

Question 17

what do the autonomic motor nuclei of the lateral gray horns contain

Answer 17

cell bodies of preganglionic neurons

Question 18

what sensory info is conducted from the fasciculus gracilis

Answer 18

fine touch
vibration
light pressure
proprioception

Question 19

what sensory info is conducted from the fasciculus cuneatus

Answer 19

pain and temp