urination

Prep for USMLE Forum

» Log in | Register

Forum

Step 1

Match

Prep4USMLE Forum » USMLE Step 1 Forum » Physiology Forum

urination

Author

5 Posts

Gario
Forum Junior

Topics: 14
Posts: 35

11/02/04 - 09:36 AM

Why does a person urinate unconsciously when he or she is shocked?
I wanna know the mechanism.

Thanks in advance.

Gary

mdwannabe
Forum Guru

Topics: 37
Posts: 1,133

11/02/04 - 11:32 AM

Coz of relaxation of external sphincter, and the internal sphincter will relax on it's own when bladder is distended.

___________________
"Life not lived for others, is not worth living" Uncle Einstein
"A life is not important, except in the impact it has on other lives" -Jackie Robinson

Gario
Forum Junior

Topics: 14
Posts: 35

11/02/04 - 02:41 PM

Could you tell me the roles of cortex, hypothalamus, and ANS in regulating the urination?

Thank you again.
Also, ANY opinion will be greatly appreciated!

Gary

mjl1717
Forum Hero
avatar

Topics: 956
Posts: 5,452

11/02/04 - 05:00 PM

I can tell you that:
The anterior hypothalamus has an excitory efffect on the PNS!
Also a lesion to area 4 of the cerebral cortex can result in urinary inontinence.

___________________
Smell the coffee! "Is That an Osler move??"

Gario
Forum Junior

Topics: 14
Posts: 35

11/02/04 - 10:35 PM

Thank you, mjl1717.
The data I have found is just about urogenital reflex and Barrington's nucleus.
You are really well-informed.
Hope I can learn more from you.

Best regards,

Gary

You don't have permission to post.