What does the ventral Spinothalamic tract do?

Published by Anaya Cole on

What does the ventral Spinothalamic tract do?

The ventral spinothalamic tract, located in the anterior funiculus, transmits crude touch and pressure sensations. The lateral spinothalamic tract lies in the ventral part of the lateral funiculus and transmits pain and temperature.

What travels in ventral Spinothalamic tract?

There are two main parts of the spinothalamic tract: The lateral spinothalamic tract transmits pain and temperature. The anterior spinothalamic tract (or ventral spinothalamic tract) transmits crude touch and firm pressure.

Where does the ventral Spinothalamic tract Decussate?

This tract (unlike the corticospinal tract, or the dorsal column pathway/medial lemniscus pathway) decussates (crosses) at the level of the spinal cord, rather than at the brainstem.

Where does the STT end?

Lamina I STT neurons send their axonal projections in the middle of the lateral funiculus to terminate in the posterior part of the ventral medial nucleus of the thalamus as well as in the ventral posterior and medial dorsal nuclei.

Where does the anterolateral system Decussate?

DCML Pathway If the lesion occurs in the spinal cord (which is most common), the sensory loss will be ipsilateral – decussation occurs in the medulla oblongata.

Where does the spinothalamic tract begin?

The spinothalamic tract is a collection of neurons that carries information to the brain about pain, temperature, itch, and general or light touch sensations. The pathway starts with sensory neurons that synapse in the dorsal horn of the spinal cord.

Where do the fibers of the spinothalamic tracts cross?

These tracts (fibers) cross over upon entering the spinal cord and ascend to the brainstem centers. The spinothalamic tract, one of the most important pathways of the nervous system, lies anteriolaterally to the ventral horn of the spinal grey matter.

Where does the spinothalamic tract cross over to the opposite side quizlet?

The axons of the second-order neurons of the lateral spinothalamic tract cross to the opposite side of the spinal cord and carry sensations of pain and temperature. The anterior spinocerebellar tract carries information about crude sensations of touch and pressure.

Which tract carries crude touch?

anterior spinothalamic tract
The spinothalamic tracts sit within the dorsal horn of the spinal cord. Most of the fibres cross at or near the level they enter the spinal cord. The lateral spinothalamic tract carries information about pain and temperature, and the anterior spinothalamic tract carries information about crude touch.

Where does the lateral spinothalamic tract cross?

The secondary neurons in the lateral spinothalamic tract cross over to the other side of the spinal cord and then ascend in the spinal cord, through the brainstem, and to the ventral posterolateral (VPL) nucleus in the thalamus.

What is the sensory pathway of the spinothalamic tract?

The spinothalamic tract (part of the anterolateral system or the ventrolateral system) is a sensory pathway to the thalamus. From the ventral posterolateral nucleus in the thalamus, sensory information is relayed upward to the somatosensory cortex of the postcentral gyrus .

What is the lateral spinothalamic tract?

The lateral spinothalamic tract (or lateral spinothalamic fasciculus ), which is a part of the anterolateral system, is a bundle of afferent nerve fibers ascending through the white matter of the spinal cord, carrying sensory information to the brain. It carries pain, and temperature sensory information ( protopathic sensation) to the thalamus.

What are the fibers of the anterior spinothalamic tract?

More specifically, its fibers convey crude touch information to the VPL (ventral posterolateral nucleus) part of the thalamus. The fibers of the anterior spinothalamic tract conduct information about pressure and crude touch (prothopatic). The fine touch (epicritic) is conducted by fibers of the medial lemniscus.

Where does the spinothalamic tract originate and terminate?

As the name indicates, spinothalamic tracts originate in the spinal cord and terminate in the thalamus, which is a part of the forebrain. Spinothalamic tracts include an anterior tract and a lateral tract.

Categories: FAQ