The lateral spinothalamic tract carries information about pain and temperature . The anterior spinothalamic tract carries sensory information regarding light, poorly localized touch.
What is the function of the lateral spinothalamic tract quizlet?
The lateral spinothalamic tract conveys pain and temperature .
What specific information does a lateral spinothalamic tract carry?
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. The gracile and cuneate tracts carry information about proprioception and light touch.
Where does the lateral spinothalamic tract cross?
The fibres of the lateral spinothalamic tract ascend through the medulla , and lies between the inferior olivary nucleus and the trigeminal nerve spinal tract nucleus. The anterior spinothalamic tract now joins it, and together they form a structure called the spinal lemniscus.
What is the function of the Spinoreticular tract?
The spinoreticular tract is involved in the control of descending modulation, motivational-affective aspects of pain , and also in motor and neurovegetative responses to pain (Millan, 1999).
What is the meaning of corticospinal tract?
The Corticospinal tract (CST), also known as the pyramidal tract, is a collection of axons that carry movement-related information from the cerebral cortex to the spinal cord . It forms part of the descending spinal tract system that originate from the cortex or brainstem.
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.
What happens if the lateral spinothalamic tract is damaged?
Damage to the lateral spinothalamic tracts cause absence of pain and temperature sensation, bilaterally, below the lesion level . Sparing of the dorsal columns leaves light touch, vibration, and position sense intact throughout.
What is Spinothalamic pathway?
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.
Why the pathway of pain is considered as lateral spinothalamic tract?
The lateral spinothalamic tract conveys pain and temperature . In the spinal cord, the spinothalamic tract has somatotopic organization. ... The pathway crosses over (decussates) at the level of the spinal cord, rather than in the brainstem like the dorsal column-medial lemniscus pathway and lateral corticospinal tract.
Where is the lateral corticospinal tract found?
The lateral corticospinal tract is a descending motor pathway that begins in the cerebral cortex , decussates in the pyramids of the lower medulla (also known as the medulla oblongata or the cervicomedullary junction, which is the most posterior division of the brain) and proceeds down the contralateral side of the ...
What is the anterolateral pathway?
refers to a collection of ascending pathways that carry pain and temperature–as well as related touch–sensations from the spinal cord to the brainstem or thalamus. The anterolateral system is generally considered to contain the spinothalamic tract, spinoreticular tract, and spinomesencephalic tract .
Where does the spinothalamic tract originate?
The spinothalamic tract (STT) is made up of axons, originating from neurons in the spinal cord grey matter , which cross segmentally and then ascend to terminate in a variety of thalamic nuclei. The cells of origin of the STT are located throughout the spinal cord in three functional groups.
What is the Spinomesencephalic tract?
aka spinotectal tract, the spinomesencephalic tract is part of the anterolateral system ; it terminates in the periaqeductal gray of the midbrain. The periaqueductal grey is thought to be an area that is important to inhibiting or controlling pain sensations and so the spinomesencephalic tract contributes to that role.
What are the pain pathways?
The medial thalamus projects to widespread areas of the forebrain, including the somatosensory cortex (Jones and Leavitt, 1974). Thus there are two major ascending pathways for pain: a direct lateral spinothalamic pathway and an indirect medial spinoreticulothalamic pathway .
What is Lissauer’s tract?
Lissauer’s tract is a pathway formed from the proximal end of small unmyelinated and poorly myelinated fibers in peripheral nerves , which enter at the lateral aspect of the dorsal horn and ascend and descend up to four segments, and terminate in Rexed’s laminae I through to VI (principally I, II, and V) of the ...
