Dr Gawad Physiology Course Online Exams -sympathetic Nervous System

7 Questions | By Gawadgawadgawad | Last updated: Mar 21, 2022 | Total Attempts: 1746

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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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1.

Stimulation of the sympathetic causes :
- A.
  
  Increased gastric HCl and pepsin secretion.
- B.
  
  Generalized actions affecting many systems.
- C.
  
  Bronchoconstriction.
- D.
  
  Decreased glycogenolysis and lipolysis.
2.

Stimulation of the cervical division of sympathetic nerves causes :
- A.
  
  Drooping of the upper eyelid.
- B.
  
  A small-sized pupil.
- C.
  
  Exophthalmos
- D.
  
  Inhibition of salivary gland secretion.
3.

All the following about the sympathetic N.S. is true except:
- A.
  
  Its stimulation causes urine retention.
- B.
  
  It is involved in stress and emergency conditions.
- C.
  
  It has a V.C. effect on skeletal muscle bld vessels.
- D.
  
  Its stimulation increases the cardiac properties.
4.

The sympathetic tone is most important for :
- A.
  
  Decreasing the blood flow to the gut (GIT or alimentary canal
- B.
  
  Maintaining the heart rate within normal.
- C.
  
  Keeping the fasting blood glucose level constant.
- D.
  
  Maintenance of the systemic arterial blood pressure constant.
- E.
  
  Causing bronchodilatation.
5.

Preganglionic sympathetic nerve fibres :
- A.
  
  Are found in somatic nerves (e.g. the median and ulnar nerves).
- B.
  
  Form plexuses around blood vessels.
- C.
  
  Are present in the short ciliary nerves.
- D.
  
  Are non-medullated (non myelinated).
- E.
  
  Are found in the greater splanchnic nerves.
6.

The sympathetic nervous system has all the following characters except:
- A.
  
  It supplies every organ in the body.
- B.
  
  It is involved more frequently in generalized actions.
- C.
  
  It is of great importance in eye mydriasis
- D.
  
  It may antagonize parasymp functions.
7.

The sympathetic system cannot be responsible for:
- A.
  
  Constriction of the pupil.
- B.
  
  Erection of hair.
- C.
  
  Secretion of sweat glands.
- D.
  
  Dilatation of skeletal muscle blood vessels.
- E.
  
  Spleen contraction.

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