The anterior spinothalamic tract, also known as the ventral spinothalamic fasciculus, is an ascending pathway located anteriorly within the spinal cord, primarily responsible for transmitting coarse touch and pressure.
What is the function of the anterior spinothalamic tract?
The anterior spinothalamic tract carries sensory information regarding light, poorly localized touch. This information is carried in slow-conducting fibres (Aδ and C fibres) in contrast to the rapidly conducting fibres carrying information about pain and temperature.
What is the difference between the anterior and lateral spinothalamic tract?
The spinothalamic tract consists of two adjacent pathways: anterior and lateral. The anterior spinothalamic tract carries information about crude touch. The lateral spinothalamic tract conveys pain and temperature.
What is lateral spinothalamic tract?
The lateral spinothalamic tract, also known as the lateral spinothalamic fasciculus, is an ascending pathway located anterolaterally within the peripheral white matter of the spinal cord. It is primarily responsible for transmitting pain and temperature as well as coarse touch.
What is anterolateral spinothalamic pathway?
The spinothalamic tract (also known as anterolateral system or the ventrolateral system) is a sensory pathway from the skin 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 happens if the spinothalamic tract is damaged?
Damage to the spinothalamic tract within the spinal cord, as seen in Brown Squared syndrome, results in contralateral loss of pain and temperature whilst vibration and proprioception, transmitted via the dorsal columns, will be affected ipsilaterally.
What is the function of the anterior spinocerebellar tract of the spinal cord?
The ventralspinocerebellar tract, also known as the anterior spinocerebellar pathway, carries both proprioceptive and cutaneous information from the lower body (spinal levels L5 to T12) and enters the cerebellum via the superior cerebellar peduncles.
What tract is light touch?
The anterior spinothalamic tract transmits light touch. Autonomic function traverses within the anterior interomedial tract. Sympathetic nervous system fibers exit the spinal cord between C7 and L1, whereas parasympathetic system pathways exit between S2 and S4.
How many spinothalamic tract are there?
Spinothalamic tract is also referred to as the ventrolateral (anterolateral) system. It is composed of four tracts: Anterior spinothalamic tract. Lateral spinothalamic tract.
What are the three sensory pathways?
A somatosensory pathway will typically consist of three neurons: primary, secondary, and tertiary.
- In the periphery, the primary neuron is the sensory receptor that detects sensory stimuli like touch or temperature.
- The secondary neuron acts as a relay and is located in either the spinal cord or the brainstem.
Where does the anterior corticospinal tract Decussate?
Most of the axons of the anterior corticospinal tract will decussate in the spinal cord just before they synapse with lower motor neurons. The fibers of these two different branches of the corticospinal tract preferentially stimulate activity in different types of muscles.
What does the anterior white commissure do?
The anterior or ventral white commissure is a collection of nerve fibers that cross the midline of the spinal cord and transmit information from or to the contralateral side of the brain.
Where does the spinothalamic tract terminate?
The spinothalamic tract terminates mainly in the ventroposterolateral nucleus, ventroposteromedial nucleus, the intralaminar nuclei, mainly the central lateral nucleus, and the posterior complex.
What does anterolateral system?
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.
What tracts make up the anterolateral system?
The anterolateral system is generally considered to contain the spinothalamic tract, spinoreticular tract, and spinomesencephalic tract.