What part of the brain is the site of decussation?

This crossover, or decussation, occurs just before the junction between the medulla oblongata and the spinal cord.

Which tracts Decussate at the pyramids?

At the pyramids’ most caudal end, the corticospinal axons decussate (or cross over) the midline and continue down the spinal cord on the contralateral side. The fibers that decussated will go down the lateral corticospinal tract while the fibers that did not decussate will travel down the anterior corticospinal tract.

Where would you find the decussation of the pyramids What does decussation mean?

Medical Definition of pyramidal decussation : the crossing of the fibers of the corticospinal tracts from one side of the central nervous system to the other near the junction of the medulla and the spinal cord. — called also decussation of the pyramids.

What does site of decussation mean?

Decussation refers to the point at which the fibers cross the midline.

Where is the Arbor Vitae located?

the cerebellum
The arbor vitae is located deep in the cerebellum. Situated within the arbor vitae are the deep cerebellar nuclei; the dentate, globose, emboliform and the fastigial nuclei. These four different structures lead to the efferent projections of the cerebellum.

Is the pyramidal decussation in the medulla?

The pyramidal decussation separates the spinal cord from the medulla oblongata. The motor fibres of the pyramidal tracts – the corticospinal and corticobulbar tracts – are found in the medullary pyramids.

Where does the Spinothalamic tract Decussate?

We can contrast the spinothalamic tract with the dorsal column/medial lemniscus pathway. The former crosses/decussates at the level of the spinal nerve, where as the latter crosses at the level of the medulla.

Where does the corticospinal tract Decussate?

[1] As the corticospinal tract travels down the brain stem, a majority of its fibers decussate to the contralateral side within the medulla then continues to travel down the spinal cord to provide innervation to the distal extremities and muscle groups.

Where does decussation occur in the Spinothalamic pathway?

Decussation usually occurs 1-2 spinal nerve segments above the point of entry. The axons travel up the length of the spinal cord into the brainstem, specifically the rostral ventromedial medulla.

Which part of the central nervous system contains the pyramidal decussation?

medulla oblongata
The pyramidal decussation marks the border between the spinal cord and the medulla oblongata.