Unconscious Proprioception Pathways

Question 1

Unconscious proprioception pathways are?

Answer 1

Spinal Cord

• Dorsal Column
• Posterior spinocerebellar tract

Brainstem tracts

• Cuneocerebellar tract
• posterior spinocerebellar tract

Question 2

Pathways high fidelity information travels?

Answer 2

In two different pathways.

• Posterior spinocerebellar pathways = LE and most of the trunks
• Cuneocerebellar pathways = UE

Question 3

Two neuron system which includes?

Answer 3

Peripheral neuron (first-order afferent)

Neuron connecting spinal cord to cerebellum (second-order neuron)

Question 4

Posterior spinocerebellar pathway is?

Answer 4

First-order neuron synapses on the second-order neuron in the gray matter of the spinal cord

Question 5

Posterior spinocerebellar pathway spinal cord tract?

Answer 5

Posterior spinocerebellar tract

Question 6

Posterior spinocerebellar pathway medullary tract?

Answer 6

Posterior spinocerebellar tract

Question 7

Posterior spinocerebellar pathway second-order neuron axons ascend in?

Answer 7

The ipsilateral posterior spinocerebellar tract to the rostral medulla and enter the ipsilateral side of the cerebellum via the inferior cerebellar peduncle.

Question 8

Propriceptor is stimulated and?

Answer 8

An AP is generated and propagates along a Ia, Ib or II first-order afferent neuron (whose soma is in a DRG). Central axon enters the spinal cord and goes to the gray matter.

Question 9

After the first-order afferent synapses with?

Answer 9

The second-order neuron in the spinal cord and the second-order neuron enters the ipsilateral posterior spinocerebellar tract and travels up to the lateral rostral medulla.

Question 10

Once in the lateral rostral medulla and the?

Answer 10

second-order neuron enters the inferior cerebellar peduncle and travels to the ipsilateral side of the cerebellum.

Question 11

UE Cuneocerebellar Pathways are?

Answer 11

Spinal cord
-Dorsal Column

Medullary Tract
-Cuneocerebellar tract

Question 12

UE Cuneocerebellar Pathway travels

Answer 12

Central axon first-order afferents from UE travel in the ipsilateral dorsal column to posterolateral cadual medulla.

First-order afferents synapses on second-order neurons in a nucleus in the caudal medulla.

Question 13

UE Cuneocerebellar Pathway axons of the second order neurons do?

Answer 13

Ascend in the cuneocerebellar tract to the rostral medulla and project to the ipsilateral side of the cerebellum via the inferior cerebellar peduncle.

Question 14

UE Cuneocerebellar Pathway propriceptors is stimulated then?

Answer 14

An AP is generated and propagates along Ia, Ib or II first-order afferent neuron (whose soma is in a DRG)

Central axon enters the dorsal column and ascends to a nucleus in the posterolateral caudal medulla.

Question 15

UE Cuneocerebellar Pathway after the first-order afferent synapses with?

Answer 15

The second-order neuron in the caudal medulla, the second-order neuron travels in the cuneocerebellar tract to the ipsilateral side of the cerebellum via the inferior cerebellar peduncle at the level of the rostral medulla.

Question 16

Sensory input influences behavior?

Answer 16

Neurons in the primary somatosensory cortex project anteriorly to the motor regions of the frontal lobe.

-Influence motor behavior in response to touch and proprioception

Question 17

Neurons in the primary somatosensory cortex also?

Answer 17

Project posteriorly to the somatosensory association cortex of the parietal lobe.

• Recognition of somatosensory information, particularly touch and proprioception
• Stereognosia
• Graphesthesia