"A brain hemmorhage within the region of the right internal capsule results in paralysis of the left side of t

Question

"A brain hemmorhage within the region of the right internal capsule results in paralysis of the left side of the body. Why is the left side affected.

Answer 1

the neurons that control movement lie in the parietal cortex (the side of the brain's surface) on the contralateral side (opposite to the side it controls. All the fibers from these neurons go down through the internal capsule on their way to the spinal cord, and they stay on the original side until they reach the medulla (the lower brainstem, or just above where the spinal cord starts). At this point, they cross over to the other side, and run down the spinal cord on the ipsilateral side (the same side as the side it controls).

This is why strokes, hemorrhages and injuries in the brain typically affect the other side, but strokes, hemorrhages and injuries in the spinal cord typically affect the same side.

Answer 2

Left Internal Capsule

Answer 3

The nerves and the signal processing cross over in the brain. Thus the right side of the brain controls the left side of the body and vice versa. I don't know whether it is the case for all animals or only humans. And I also don't know the reasons for this.

Thanks for an interesting question and I hope you get good answers which answer the why.

Answer 4

The right side of the brain controls the left side of the body and visa versa.

Answer 5

because the right hemishere controls the left side and the left controls you r fight. Its just the way the body works.