Tuesday, April 27, 2010

Digestive System 2 (Objective Type Questions)

Neuronal control of GIT function enteric nervous system :


20. The nervous system of the GIT is called as ............................

21. The number of neurons in enteric nervous system is is about 100 million which is assumed to be aqual to the number in the..........................

22. The outer plexus of enteric nervous system lies b/w the ........................and ...................... layers called myenteric plexuses.

23. sub mucosal plexuses of the enteric nervous system is called as...................,that lies in the sub mucosa.

a) myenteric plexus,

b) Meissner's plexus

c) none of the above

24. The GIT movements are controlled by ;

a) sub mucosal plexus

b) myenteric plexus

c) hormonal secretions

25. GIT secretions and local blood flow is controlled by :

a) sub mucosal plexus

b) myenteric plexus

c) hormonal secretions

Differences b/w the Myenteric and submucosal plexuses:

26. My enteric plexus consists of a ..................chain of interconnected neurons that extends the entire length of the gastrointestinal tract.

a) circular

b) branched

c) linear

27. what is wrong about the GIT smooth muscle stimulation :

a) Stimulation of My enteric plexus causes the decreased tonic contraction .

b) Stimulation of My enteric plexus causes the increased rate of rhymes of contraction .

c) Stimulation of My enteric plexus causes the decreased intensity of chemical contractions .

d) Stimulation of My enteric plexus causes the increased velocity of inhibition of the excitatory waves along the gut wall.

28. Myenteric plexus are :

a) excitatory ,

b) inhibitory

c) not completely inhibitory

d ) not completely excitatory

29. The inhibitory neurotransmitter secreted by my enteric plexus is called ..............................

30. Control of function within the inner wall of each minute segment is handled by .....................

a) hormonal secretions

b) myenteric plexus

c) sub mucosal plexus ,

d) non of the above

Types of Neurotransmitters Secreted by Enteric Neurons:

31. About more than 12 types of neurotransmitters are secreted by enteric neurons ,out of which more familiar are:

a) cholecystokinin

b) adenosine triphosphate

c) serotonin

d) Acetylcholine and epinephrine.

Answers to Objective Type Questions of Digestive System:
20. enteric nervous system .


21. spinal cord.

22. longitudinal ,circular

23. b

24. b

25. a

26. c

27. b

28. d

29. intestinal polypeptide

30. ()

31. d

Further Reading:
Textbook of Medical Physiology: With STUDENT CONSULT Online Access
Guyton and Hall Physiology Review

Pocket Companion to Guyton & Hall Textbook of Medical Physiology
 
Tag:
Preparation of Pharmacy Exams, Tests of Physiology, MCQs of Physiology
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