Dr Gawad Physiology Course Online Exams -sympathetic 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.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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