Complete the sentences describing how pain sensations occur. touch encapsulated

Question

Complete the sentences describing how pain sensations occur. touch encapsulated dendrites sensory neurons pain viscera free nerve endings cerebral cortex spinal cranial central nervous system skin thalamus The receptors which respond to stimuli that damage tissue are the ___ receptors, comprised of ____. These receptors are found in most tissues, with the exception of the ____. In fact, they are the only receptors in the ____ to produce a sensation. The impulses from pain receptors of the head travel to the brain via sensory fibers within _______ nerves. Impulses from all other pain receptors pass into the spinal cord by way of the ______ nerves and are transmitted to the brain. Awareness of the pain occurs when sensory impulses reach the ____. Localization of the pain source occurs when the impulse reaches the _____. This is also when pain intensity is sensed.

Explanation / Answer

The receptors which respond to stimuli that damage tissue are the pain receptors comprised of free nerve endings.

These receptors are found in must tissues, with the exception of the central nervous system. Infact, they are the only receptors in the viscera to produce a sensation.

The impulses from the pain receptors of the head travel to the brain via sensory fibers within cranial nerves. Impulses from all other pain receptors pass into the spinal cord by way of the sensory nerves and are transported to the brain.

Awareness of the pain occurs when sensory impulses reach the thalamus. Localization of the pain sources occurs when the impulse reaches the cerebral cortex. This is also when pain intensity is sensed.

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