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L8, Adrenergic transmission, Physiology

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MCQ 


1-Nor -adrenaline is formed from                                                                                      
a-Serine  
b-Cysteine  
c-Phenylalanine  
d- Glycine
                                                                                            
2-Stimulation of Beta 2 receptor leads to all of that except 

.a- VD of coronary blood vessels
B- Relaxation of wall of GIT
 c-Bronchoconstriction 
D-Relaxation of gall bladder

3-Adrenaline is formed in

a- Adrenergic nerve endings 
b- Adrenal medulla
c- A and B
d- None of above

4-someone took phenylephrine , all of that would happen except …
a-Mydrasis

 b-Vasoconstriction

 c-Hair erection

 d-Relaxation of gall bladder

5- Which of the followig lead to releas nor-adrenaline in the nerve ending .....

a-ca
b-Mg
c-K
d-cu 

6- All of the following are site of release nor-adrenaline ....except

a- sweat glands 
b-blood vessels of skeletal muscles 
c-a and  
d- none of the above 

7-Presynaptic adrenergic receptors are .....
a-alpha
b-beta
c-gamma
d- a and b

8-Nicotine large dose lead to decrease release of Nor adrenaline like as .... 

a-Reserpine-Alpha methyl dopa. 
b-ephedrine
c-amphetamine
d- none of the above

9-all of the following are alpha stimulant except.
a-nor-adrenaline 
b-adrenaline
c-phenylephrine
d-phentolamine

               True and false 

1-Nor-adrenaline is stored in clear vesicles          

2-Nor-adrenaline releases from all postsynaptic sympathetic nerve endings                              


3- Active reuptake is the main method for removal of noradrenaline                             

4- Alpha receptor is more sensitive to nor-adrenaline

5- Atenolol is alpha stimulant drug                       


6- alpha 1 decrease CAMP

Answers of MCQ 


1-c
2-c
3-b
4-d
5-a
6-c
7-d
8-a

Answers of True &False

1-false
2-false
3-true 
4-true
5-false
6-false





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