Question

An example of an autonomous nervous system is
A. Swallowing of food
B. Pupillary reflex
C. Peristalsis of intestine
D. Knee-jerk response

Answer 1

Hint:
The autonomic nervous system controls the involuntary function of the internal organ of our body.

Complete answer:
The autonomic nervous system is the part of the nervous system that regulates the functions of internal organs such as blood vessels, stomach, intestines, liver, kidneys, bladder, lungs, sweat gland, salivary gland, etc. ANS or autonomic nervous system has been segregated into the sympathetic and parasympathetic systems. The autonomic nervous system responds by stimulating body processes after it receives information about the body and external environment usually through the sympathetic division, or inhibiting them, usually through the parasympathetic division.
Either sympathetic or parasympathetic divisions regulated the many functions of organs of our body. Sometimes both of these have opposite effects on the same organ. We can take an example of blood pressure, the sympathetic division increases blood pressure while the parasympathetic division decreases it. So, we can conclude that both divisions are working together to ensure that the body responds appropriately to different situations.
Peristalsis of the intestine is an example of the action of the autonomic nervous system. The parasympathetic nervous system stimulates the peristalsis of the intestines. Swallowing of food, pupillary reflex, and knee jerk is the examples of the somatic nervous system, unconditional reflex, and monosynaptic reflex actions respectively.
Hence the correct answer is Peristalsis of the intestine..

Option ‘C’ is correct

Note:
The damage to autonomic nerves that help control body processes may cause autonomic disorders. In some cases, the autonomic disorder may occur on its own. The most common causes of autonomic disorders include diabetes, peripheral nerve disorder, aging, and Parkinson’s disease. Autonomic neuropathies, multiple system atrophy, spinal cord disorder, and pure autonomic failure are the less common causes of autonomic disorder.