NERVOUS SYSTEM SPECIAL SENSE
PERIPHERAL NERVE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Increased heart rate
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Decreased heart rate
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energy diversion to muscles
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dilated pupils
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Detailed explanation-1: -The parasympathetic nervous system is responsible for the unconscious regulation of salivation, lacrimation, urination, digestion, and defecation (acronym SLUDD) [16]. Most of the nerves of the parasympathetic nervous system come from the brain stem and some from sacral spinal cord.
Detailed explanation-2: -The Cardiac Action Potential The right vagus nerve supplies the SA node and slows its pacemaker; the left vagus innervates the AV node and slows its conduction of the cardiac impulse to the bundle of His. The vagus fibers are preganglionic; they make synapses with parasympathetic neurons within the heart.
Detailed explanation-3: -In contrast, parasympathetic stimulation decreases heart rate and constricts the pupils. It also increases secretion of the eye glands, increases peristalsis, increases secretion of salivary and pancreatic glands, and constricts bronchioles.