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