Dr Gawad Physiology Course Online Exams - Lecture 4 Exam (Parasympathetic Nervous System)
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The parasympathetic nerves :
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Are important in emergency conditions.
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Play important functions in the skin and skeletal muscles.
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Tend to have longer postganglionic fibres than pregang fibres.
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Are catabolic in their actions.
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Generally exert opposite effects to those of the sympathetic nerves.
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7 MCQs (Only one correct answer)Each MCQ: 1 mark, Total mark: 7 (you will get the results immediately with correction by the web)Passing score 60%Allowed time: 10 minGood Luck
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- 2.
The functions of Parasympathetic innervations to the salivary glands is:
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V. C. and secretion.
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V.D. and secretion.
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V.D. and inhibition of secretion.
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Secretion of scanty viscous saliva.
Correct Answer
A. V.D. and secretion. -
- 3.
Which of the following may be produced by parasympathetic stimulation
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Acceleration of the heart.
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Relaxation of the GIT wall
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V.D. of coronary artery.
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Dilatation of the pupil.
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Contraction of the urinary bladder wall.
Correct Answer
A. Contraction of the urinary bladder wall. -
- 4.
Stimulation of the pelvic nerve (sacral autonomic) produces :
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Relaxation of the wall of rectum and contraction of the internal anal sphincter.
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V.C. of the blood vessels in the external genitalia causing erection of penis.
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Contraction of the bladder wall and relaxation of the internal urethral sphincter.
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Contraction of smooth muscles in the male sexual passages causing ejaculation.
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Relaxation of the external urethral and anal sphincters.
Correct Answer
A. Contraction of the bladder wall and relaxation of the internal urethral sphincter. -
- 5.
An injury to the first 4 sacral segments of the spinal cord produces :
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Hyperglycaemia.
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V.D. in the cutaneous blood vessels.
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Disturbance of sweat secretion.
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Lack of erection of the penis in males and clitoris in females.
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Relaxation of the internal anal and urethral sphincters.
Correct Answer
A. Lack of erection of the penis in males and clitoris in females. -
- 6.
About the vagus nerve, all the following is true except:
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It contains afferent and efferent fibres.
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It contains parasympathetic pregang fibres.
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It produces micturition.
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It causes increased peristaltic movement of the intestinal wall.
Correct Answer
A. It produces micturition. -
- 7.
Concerning the pelvic nerve, all the following is true except
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It is the nerve of erection (= nervus erigenes).
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It is motor to the urinary bladder and distal half of the large intestine.
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It is inhibitory to both the internal anal and urethral sphincters.
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It has no postganglionic nerve fibres.
Correct Answer
A. It has no postganglionic nerve fibres. -
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Mar 14, 2022Quiz Edited by
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Nov 10, 2015Quiz Created by
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