If you punch your self hard , why is there a sharp pain followed by a full achin

Question

If you punch your self hard , why is there a sharp pain followed by a full aching pain? What would happen if you lost all of your myelinated sensory neurons in your foot? 28) (3 pts) If you pinch yourself hard, why is there a sharp pain followed by a dull aching pain? 29) (4 pts) What would happen if you lost all of your myelinated sensory neurons in your foot? 31) (4 pts) If Fritz had damage to his spinal cord at the level of the belly-button, but only the left side was destroyed, how would this effect movement and sensation in both his right and left leg?

Explanation / Answer

1. When we punch ourselves hard, their is a sharp painful twinge in the muscles at the place we punched. We feel the sensation of pain when pain receptors send electric signals along nerves to the brain. Gradually the pain turns to full aching pain due to the strain in the muscle.

2. If all of the myleinated sensory neurons are lost, it results in deceased sensation.Peripheral nerves distort and interrupts message between brain and spinal cord and rest of the body.

3. As the left side of spinal cord was destroyed, there would be a loss of sensation and decrease in the electrical impulses of brain and effects the muscles of legs. At this stage the spinal cord is inherently unstable with low back pain and lumbar instability .

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