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Somatic Sensory Pathways Quiz

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Questions and Answers

Which pathway is responsible for fine touch and pressure?

The dorsal column (correct)
The cerebral cortex
The ventral spinothalamic tract
The spinothalamic tract

Which pathway is responsible for pain and temperature?

The ventral spinothalamic tract
The spinothalamic tract (correct)
The cerebral cortex
The dorsal column

Which order neuron is present in the dorsal root ganglia?

Third order neuron
Second order neuron
Fourth order neuron
First order neuron (correct)

Where do the axons of the gracile and cuneate nuclei cross to the opposite side?

<p>In the medulla (B)</p>

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Which type of fibers are responsible for transmitting signals in the dorsal column pathway?

<p>Thick myelinated (Aα & Aβ fibers) (C)</p>

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Flashcards

Dorsal column pathway

Carries sensory information related to fine touch and pressure.

Spinothalamic tract

Carries sensory information related to pain and temperature.

First order neuron

The initial neuron in a sensory pathway, located in the dorsal root ganglia.

Decussation of gracile and cuneate nuclei

Axons cross to the opposite side of the medulla, allowing sensory information to be processed by the contralateral hemisphere.

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Thick myelinated (Aα & Aβ) fibers

These fibers transmit signals quickly and efficiently in the dorsal column pathway.