Unit 1: Spinal Cord Neuroanatomy Flashcards Preview

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Flashcards in Unit 1: Spinal Cord Neuroanatomy Deck (25):
1

L1: ________ secondary neurons cross the midline in the spinal cord.

Pain and Temperature sensation

2

L1: Lower Motor Neuron syndrome is classified as _____ paresis.

Flaccid

3

L1: Second-order pain/temperature sensory neurons synapse with a third-order neuron in the ______.

Ventral Posterolateral Nucleus of the Thalamus

4

L1: Soma of primary sensory neurons reside in the ______.

dorsal root ganglion

5

L1: The third-order sensory neuron innervates the _______.

Primary sensory cortex

6

L1: Upper Motor Neuron syndrome is classified as ______ paresis.

Spastic

7

L1: Vibration/Proprioception second-order sensory neurons synaps with a third-order neuron in the _______.

Ventral Posterolateral Nucleus of the Thalamus

8

L2: ___% (the majority) of corticospinal fibers decussate in the _______.

80; medullary pyramid

9

L2: Axons in the lateral corticospinal tract arise on the _______ side of the cortex.

contralateral

10

L2: Axons in the lateral corticospinal tract synapse in the _______.

Ventral gray matter of the spinal cord

11

L2: Axons of the primary sensory neuron for pain or temperature enter the spinal cord and ascend or descent in _________.

Lissauer's fasciculus

12

L2: Corticospinal fibers that do not decussate in the medulla cross the midline via the ________.

Ventral white commissure

13

L2: Pain or temperature primary sensory neurons synapse at the _______. (___ matter of the _____ horn)

Substantia gelatinosa; gray; dorsal

14

L2: Pelvic splanchnic preganglionic parasympathetic fibers are found in the _______

Lateral gray horn T12-L1

15

L2: The fasciculus gracilis carries fibers for the _____ extremity and is located more _______.

Lower; medially

16

L2: The internal capsule transects the ______.

Striatum

17

L2: The second-order pain/temperature sensory neuron ascends in the ________ part of the spinal cord.

anteriolateral

18

L2: The second-order pain/temperature sensory neuron crosses the midline via the ________.

Ventral white commissure

19

L2: The striatum consists of the _____ and the _______.

Caudate nucleus, putamen

20

L2: Vibration/Proprioception primary sensory neurons (lower extremity) ascend in the spinal cord in the _______.

Fasciculus Gracilis

21

L2: Vibration/Proprioception primary sensory neurons (lower extremity) synapse with a second-order neuron in the ______.

Nucleus Gracilis

22

L2: Vibration/Proprioception primary sensory neurons (upper extremity) ascend in the spinal cord in the _______.

Fasciculus Cuneatis

23

L2: Vibration/Proprioception primary sensory neurons (upper extremity) synapse with a second-order neuron in the ______.

Nucleus Cuneatis

24

L2: Vibration/Proprioception second-order sensory neurons cross the midline via the ______.

Medial Lemniscus

25

L2: Vibration/Proprioception sensory neurons reach the brain via the ________ system

posterior cord/medial lemniscal