Sphincter muscle

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Smilin

Diamond Member
Mar 4, 2002
7,357
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Ok, good question. Not only would I like to know the answer I'm looking forward to some humorous posts.


I always figured it just did it to keep your butt from slapping shut. If it didn't it would sound like someone "golf clapping" when you had diarrhea.
 
D

dkozloski

Diamond Member
Oct 9, 1999
3,005
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76
There must be some sort of adaptive closed loop servo system because it also has to handle gas flow as well as perform a check valve operation to keep you from sinking while swimming..
 
J

jagec

Lifer
Apr 30, 2004
24,442
6
81
Originally posted by: dkozloski
There must be some sort of adaptive closed loop servo system because it also has to handle gas flow as well as perform a check valve operation to keep you from sinking while swimming..
Click to expand...

Actually, I'd claim that it's a feedforward control with feedback. The stream sensors immediately above the flow control valve allow the system to adjust for minimum frictional losses when processing large solids, then when the stream sensors indicate the intestine is emptying the control begins constricting. Final constriction per solid slug is direct feedback with no input from the upstream sensors. When the intestine is fully empty the signal is passed to the control valve, allowing it to fully constrict in preparation for cleaning.

Gas discharge is handled strictly feedforward, I'd say. The sensors indicate a pressure buildup, and the control valve opens slightly to relieve it. The flow is not being dynamically throttled as it would with a feedback system.
 
beansbaxter

beansbaxter

Senior member
Sep 28, 2001
290
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86
Originally posted by: DrPizza
Okay.....

Who the heck is this beansbaxter? He's started so many threads in here lately... boredom?
Click to expand...

Sorry man...I visit this forum a lot, and just wanted to bring some more topics of discussion. Hope that's cool. I learn a lot here as well I must say.
 
P

Passions

Diamond Member
Feb 17, 2000
6,855
3
0
Originally posted by: jagec
Originally posted by: dkozloski
There must be some sort of adaptive closed loop servo system because it also has to handle gas flow as well as perform a check valve operation to keep you from sinking while swimming..
Click to expand...

Actually, I'd claim that it's a feedforward control with feedback. The stream sensors immediately above the flow control valve allow the system to adjust for minimum frictional losses when processing large solids, then when the stream sensors indicate the intestine is emptying the control begins constricting. Final constriction per solid slug is direct feedback with no input from the upstream sensors. When the intestine is fully empty the signal is passed to the control valve, allowing it to fully constrict in preparation for cleaning.

Gas discharge is handled strictly feedforward, I'd say. The sensors indicate a pressure buildup, and the control valve opens slightly to relieve it. The flow is not being dynamically throttled as it would with a feeback system.
Click to expand...

:Q
 

Originally posted by: Passions
Originally posted by: jagec
Originally posted by: dkozloski
There must be some sort of adaptive closed loop servo system because it also has to handle gas flow as well as perform a check valve operation to keep you from sinking while swimming..
Click to expand...

Actually, I'd claim that it's a feedforward control with feedback. The stream sensors immediately above the flow control valve allow the system to adjust for minimum frictional losses when processing large solids, then when the stream sensors indicate the intestine is emptying the control begins constricting. Final constriction per solid slug is direct feedback with no input from the upstream sensors. When the intestine is fully empty the signal is passed to the control valve, allowing it to fully constrict in preparation for cleaning.

Gas discharge is handled strictly feedforward, I'd say. The sensors indicate a pressure buildup, and the control valve opens slightly to relieve it. The flow is not being dynamically throttled as it would with a feeback system.
Click to expand...

:Q
Click to expand...

You got that right
 
G

Geniere

Senior member
Sep 3, 2002
336
0
0
There are many sphincter muscles in the human body, but it seems we posters are mostly ?anal? fixated.
 
B

bobsmith1492

Diamond Member
Feb 21, 2004
3,875
3
81
If you're talking about the anal sphincter, I've got control over mine, so I don't know exactly what the question is.....
 
J

jagec

Lifer
Apr 30, 2004
24,442
6
81
Originally posted by: Geniere
There are many sphincter muscles in the human body, but it seems we posters are mostly ?anal? fixated.
Click to expand...

The Politics & News forum didn't tip you off to that?;)
 
A

alexXx

Senior member
Jun 4, 2002
502
0
0
Your muscle knows nothing. Your brain uses the nerves in the intestine to know when the excrement has left and then controls the muscle accordingly. It is just like saying something stupid like "how does my finger know how to flick a marble."
 
Pulsar

Pulsar

Diamond Member
Mar 3, 2003
5,224
306
126
Actually alexxx, it's a very interesting question regarding feedback loops.

The nerve endings in your anus allow your brain to determine the relative velocity of the aforementioned poo. I would surmise that it is a partially trained response, and partially instinctual. While young children have no active control of that area until they are taught, their rear end will automatically close off in between poop.

The natural wait state of your rear end is closed, right? So how do young children know when to start?

I think this is a very interesting idea that should be pursued to it's logical conclusion.
 
PottedMeat

PottedMeat

Lifer
Apr 17, 2002
12,363
475
126
Originally posted by: jagec
Originally posted by: dkozloski
There must be some sort of adaptive closed loop servo system because it also has to handle gas flow as well as perform a check valve operation to keep you from sinking while swimming..
Click to expand...

Actually, I'd claim that it's a feedforward control with feedback. The stream sensors immediately above the flow control valve allow the system to adjust for minimum frictional losses when processing large solids, then when the stream sensors indicate the intestine is emptying the control begins constricting. Final constriction per solid slug is direct feedback with no input from the upstream sensors. When the intestine is fully empty the signal is passed to the control valve, allowing it to fully constrict in preparation for cleaning.

Gas discharge is handled strictly feedforward, I'd say. The sensors indicate a pressure buildup, and the control valve opens slightly to relieve it. The flow is not being dynamically throttled as it would with a feedback system.
Click to expand...

hmm this would make an interesting PhD thesis, hehe submit it to one of those IEEE control systems journals or something
 
M

MrAntikid

Member
Apr 25, 2004
29
0
0
well i just got the lastest firmware for my sphincter. V2.3.1242
and it contained some nice updates:

from the readme.txt:

FIXED:
anti-dingleberry v2.1 updated to v2.1.5
- resolved issue where dingleberries tend to stick together to form a cluster of dingleberries
- sphincter now protected by anti-dingleberry code, making them easier to find, and eliminate
problem with sphincter closing to fast, too soon has been fixed.
cut-it-off when sneezing has been added to assure that pain from sneezing will not result.
- also added coughing.
if user falls asleep, sphincter will go into auto-mode, and will finish the job without user intervention

thats just a few of the many fascinating updates.

hope you guys rush out and get the latest update.
 
P

PCTweaker5

Banned
Jun 5, 2003
2,810
0
0
There are ants controlling the functions. An army of ants is at the end pushing out the turd and when its finally out they seal the entrance with a boulder of sh*t.
 
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