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  #1  
Old 12-08-2009
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Psyche neurotransmitters question

You are interviewing a male patient with avoidant porsonality disorder. He tells you that whenever he is around a beautiful woman he feels his heart pounding and racing, he gets a fine tremor, but the most annoying thing to him is that he starts sweating heavily. He says that everybody notices the sweating and it makes him feel so bad. What's true about the neurotransmitter involved in his sweating:

a- It's synthesised in the ventral tegmentum
b- It prolongs PR interval by working on Gq protein receptors
c- Decreases uterine smooth muscle contraction by working on Gq receptors.
d- It's the principle neurotransmitter in REM sleep
e- Large amounts are present in locus ceruleus
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Old 12-08-2009
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Is it Norepinephrine !! locus ceruleus !!!
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Old 12-08-2009
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Cool

The only "target organ" supplied by sympathetic system but has acetyl choline as POST SYNAPTIC neurotransmitter aswellas presynaptic are sweat glands.

This patient simply gets anxious around beautiful girls (who doesn't). In general, patients with avoidant personality disorders are timid and feel inadequate, that's why they avoid social interactions.

a-dopamine. ventral tegmentum is closely related to substantia nigra. Release of dopamine hear is responsible for addiction and the reward system.
b-acetyl choline but through Gi receptor (M2)
c-adrenaline, but through B2 receptors by Gs protein
d- acetylcholine .. correct answer
e-noradrenaline. Locus ceruleus is thought to be involved in panic attacks. Also it plays a major role in REM sleep

Last edited by DrSeddik; 12-18-2009 at 09:20 AM.
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  #4  
Old 12-08-2009
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woow, nice question
I guess that patient would remove all ACh from his body he knows
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Old 12-18-2009
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Quote:
Originally Posted by DrSeddik View Post
e-adrenaline. Locus ceruleus is thought to be involved in panic attacks. Also it plays a major role in REM sleep also
hi, locus ceruleus is associated with nor epinephrine.
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  #6  
Old 12-18-2009
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sorry, my fault, I corrected it. Thanx..
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