Step 7: Explain the relationship of visceral sensory neurons and visceral reflex

Question

Step 7: Explain the relationship of visceral sensory neurons and visceral reflexes to the ANS. Define visceral sensory neurons. Explain the role played by visceral sensory neurons, including examples of visceral information provided Refer to Figure 15.1 Describe the concept of referred pain. Explain how spinal and peripheral reflexes regulate some functions of visceral organs Step 8: Understand the ANS throughout life. Distinguish the embryonic origin of postganglionic neurons from the embryonic origin of postganglionic neurons. List examples of age-related problems that are associated with the declining efficiency of the ANS. Briefly describe some disorders of the ANS, such as Raynaud's disease and hypertension

Explanation / Answer

These are the neurons that monitor stretching, temperature, chemical changes and irritation. The cerebral cortex in the brain interprets these sensations as things such as hunger, fullness, pain, nausea, gas, cramping, etc. visceral sensory neurons send action potentialsto the centeral nervous system and transmit information from the internal organs to CNS. cell bodies of visceral sensory neurons situated in dorsal root ganglia and in thesensory ganglia of cranial nerves.

The term referred pain is used to describe pain felt in a region where it does not originate but to which it is referred. It is usually used to describe pain arising in hollow viscera and felt in somatic tissues, such as the body wall. Referred pain is always referred in one direction—from deep to superficial tissues.. An example is the pain from the pancreas, which is felt in the back. Pain in internal organs is often referred to sites distant from them.

Control of autonomic fuctions at the level of spinal cord involves the spinal visceral reflexes.stimulus is given and accept by sensory receptors inviscera then accepted by sensory neurons then goes to spinal cords after that reached at integration center . then efferent pathway (two neuron chain) send information to visceral effector finally response occured.

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