[DrSeddik]

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

 

[khanar]

Is it Norepinephrine !! locus ceruleus !!!

 

[DrSeddik]

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 *****. 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

 

[khanar]

woow, nice question
I guess that patient would remove all ACh from his body he knows

 

[memory]

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.

 

[DrSeddik]

sorry, my fault, I corrected it. Thanx..