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