Which of the following is not a function of sympathetic system?
Correct answer: D. Contracts the pupils
- A. Dilates the branches
- B. Accelerates the heart beat
- C. Inhibits the digestive tract
- D. Contracts the pupils
Explanation
A few cranial nerves including the vagus nerve together with the nerves from the bottom portion of spinal cord, form the parasympathetic nervous system. It promotes all the internal responses which are associated with the relaxed state i.e. contraction of the pupils, promotes digestion of food, retards heart beat etc.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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