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Flashcards in neurons and spinal cord Deck (21)
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1
Q
A

A. dendrite

B. cell body

C. axon hillock

D. axon

E. myelin sheath

F. node of ranvier

G. axon terminal

2
Q

a multipolar neuron structure is what kind of neuron

A

motor neuron

3
Q

a unipolar neuron structure is what kins of neuron

A

sensory neuron

4
Q
A

A. bipolar neuron structure

B. unipolar neuron structure

C. multipolar neuron structure

5
Q

3 functional classifications of neurons and their locations as it pertains to the spinal cord

A
  1. sensory (afferent) enters spinal cord through dorsal root
  2. motor (efferent) exits spinal cord through ventral root
  3. interneurons (association) in the gray matter of spinal cord
6
Q

what are nuclei

A

groups of cell bodies in the CNS

7
Q

what are ganglia

A

groups of cell bodies in the PNS

8
Q

what is a tract

A

a bundle of myelinated axons in the CNS

9
Q

what is a nerve

A

a bundle of myelinated axons in the PNS

10
Q
A

A. gray commissure

B. dorsal horn (pointy)

C. ventral horn (rounded)

D. white columns

E. central canal

11
Q
A

A. dorsal root

B. dorsal root ganglion

C. ventral root

12
Q

where is the cell body of a sensory neuron located

A

dorsal root ganglion

13
Q

where is the cell body of a motor neuron located

A

ventral root

14
Q

meninges function

A

cushion and protect spinal cord and brain

15
Q

3 layers of meninges and their order

A
  1. dura matter: superficial
  2. arachnoid matter: deep to the dura matter
  3. pia matter: deep to the arachnoid matter
16
Q

endoneurium location

A

surrounds the myelin sheath

17
Q

fasicles are what

A

bundles of axons in a nerve

18
Q

perineurium location

A

covering fasicles

19
Q

epineurium location

A

covering a nerve

20
Q

4 plexuses

A
  1. cervical plexus
  2. brachial plexus
  3. lumbar plexus
  4. sacral plexus
21
Q
A

A. conus medullaris

B. cauda equina

C. filum terminale