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There is considerable variation in the extent to which decussation takes place in the medulla oblongata; about two-thirds or three-fourths of the fibers usually decussate in the medulla oblongata and the remainder in the medulla spinalis.

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Where does decussation take place?

Decussation typically takes place in the brainstem and spinal cord, where nerve fibers cross over from one side of the central nervous system to the other. This crossing is important for coordinating movements and sensory information between the brain and body.


Where does decussation of the pyramids occurs in the brain?

Decussation of the pyramids occurs in the lower part of the medulla oblongata, which is the lowest part of the brainstem. This is where fibers from the corticospinal tract cross from one side of the brain to the opposite side, allowing for motor information to be transmitted between the brain and body.


What is decussation?

Decussation is the crossing of nerve fibers from one side of the body to the opposite side of the brain or spinal cord. It allows for the coordination of motor functions and sensory information between the two halves of the body.


The pyramids of the medulla oblongata are the sites of?

The pyramids of the medulla oblongata are the sites where the corticospinal tracts cross over from one side of the brain to the opposite side of the spinal cord. This crossover is known as decussation and allows for the coordination of motor function between the brain and the body.


What does the term 'decussation' mean and where does it occur?

decussation = cross over and occurs mainly in the medulla oblongata


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What is the definition of the four lemnisci that can be found in the pons?

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