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Organisation of the PNS

Spot out the ...

Question

Spot out the parasympathetic effect from the following.

A

Increasing blood pressure

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B

Dialating pupil

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C

Secretion of digestive juice

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D

Increasing cardiac output

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Solution

The correct option is C Secretion of digestive juice
Parasympathetic nervous system stimulates secretion of saliva, gastric juice, pancreatic juice, bile secretion and secretion of intestinal juice. It lowers down the blood pressure by dilating arteries, slows down the cardiac output and constricts the pupil. Thus, the correct answer is option C.

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Similar questions

Q. Read the following statements:
(i) During a cardiac cycle, both ventricles pump out approximately

70 ml

of blood called stroke volume.
(ii) Cardiac output can be defined as volume of blood pumped out by both ventricle per minute.
(iii) Cardiac output of an athlete will be higher than that of an ordinary man.
(iv) During each cardiac cycle two prominent sounds are produced.
How many statements are correct?

If each ventricle pumps out 65ml of blood in each cardiac cycle, then cardiac output will be

Q. Cardiac output is blood

Q. Assertion :Neural signals through sympathetic nerves can increases the strength of ventricular contraction. Reason: Parasympathetic neural signals synergistically act with sympathetic neural signal to increase the cardiac output.

Q. (i) During a cardiac cycle each ventricle pumps out approximately

70

mL of blood which is called the stroke volume.
(ii) The cardiac output of an athlete will be much higher than that of an ordinary man.
(iii) The body has no the ability to alter the stroke volume and the cardiac output.
(iv) The cardiac output can be defined as the volume of blood pumped out by each ventricle per minute.
(v) Volume of blood pumped by left ventricle is higher than blood pumped by right ventricle.
How many statements are correct?

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