GROSS ANATOMY
AUTONOMIC NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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sympathetic nerves
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parasympathetic nerves
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Either A or B
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None of the above
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Detailed explanation-1: -The parasympathetic system exerts its effects primarily via the vagus (innervates the esophagus, stomach, pancreas, upper large intestine) and pelvic nerves (innervates the lower large intestine, rectum, and anus.) The vagus nerve regulates tone and volume by activating the enteric motor neurons.
Detailed explanation-2: -The nerve fibres of the parasympathetic nervous system are the cranial nerves, primarily the vagus nerve, and the lumbar spinal nerves. When stimulated, these nerves increase digestive secretions and reduce the heartbeat.
Detailed explanation-3: -In the stomach and intestines, parasympathetic stimulation of M receptors leads to increased motility and relaxation of sphincters. Stimulation of M receptors also increases gastric secretions to aid in digestion. In the gallbladder, parasympathetic stimulation of M3 receptors stimulates contraction to release bile.
Detailed explanation-4: -Reduce stress. Stress can seem unavoidable for the most of us. Meditation. Massage. Yoga. Nutrition. Exercise. Osteopathy. Get enough sleep. More items •19-Jan-2021