Is the Spinothalamic pathway ipsilateral or contralateral?

Since the dorsal columns and spinothalamic tracts contain ipsilateral and contralateral fibres, respectively, transection of one-half of the spinal cord leads to a characteristic pattern of sensory loss. This is known as Brown–Sequard syndrome or sensory dissociation.

Where do ascending tracts cross?

The axons cross the midline and ascend in the anterior and lateral white columns; more precisely at the intersection between the two columns. They end by synapsing with the inferior olivary nuclei in medulla oblongata.

Where does the Spinoreticular tract cross?

The cell origin of the spinothalamic tract is in the dorsal horn and intermediate gray matter of the spinal cord. Axons of these neurons cross to the anterolateral quadrant and ascend to the thalamus, where they synapse on neurons in the lateral thalamus and in the intralaminar nuclei, located more medially.

What crosses in the anterior white commissure?

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. It is present throughout the length of the spinal cord and lies behind the anterior median fissure.

Where does the anterior spinothalamic tract cross?

The axons of the tract cells cross over (decussate) to the other side of the spinal cord via the anterior white commissure, and to the anterolateral corner of the spinal cord (hence the spinothalamic tract being part of the anterolateral system).

Is the spinothalamic tract ascending or descending?

The spinothalamic tract is an ascending pathway of the spinal cord. Together with the medial lemnicus, it is one of the most important sensory pathways of the nervous system. It is responsible for the transmission of pain, temperature, and crude touch to the somatosensory region of the thalamus.

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.

Which pathway crosses over in the medulla choose the best answer?

Posterior column pathway
Answer: The B. Posterior column pathway crosses over in the medulla.

What does the anterior commissure connect?

The anterior commissure (also labeled ac) is a large bundle of crossing fibers, which connects the olfactory bulb and parts of the cerebrum to the same areas on the opposite side.