• Set Yourself Up For Success Webinar

    October 6, 2021 at 2 PM Eastern/11 AM Pacific
    SDN and Osmosis are teaming up to help you get set up for success this school year! We'll be covering study tips, healthy habits, and meeting mentors.

    Register Now!

  • Funniest Story on the Job Contest Starts Now!

    Contest starts now and ends September 27th. Winner will receive a special user banner and $10 Amazon Gift card!

    JOIN NOW
  • Site Updates Coming Next Week

    Site updates are coming next week on Monday, Wednesday, and Friday. Click the button below to learn more!

    LEARN MORE

quick question... for all you bio nerds

Status
Not open for further replies.
About the Ads

Mazmel

Full Member
10+ Year Member
7+ Year Member
Sep 26, 2008
253
0
151
NJ
  1. Dental Student
in EMT school they taught us that the vagus nerve is pushed on when you take a dump. that is why some old people are scared to go to the bathroom without someone around- in case they die on the toilet. EMTs often find dead old people on the toilet. true stuff!
 

dentstd

Fena Gonzales
10+ Year Member
Oct 14, 2006
1,669
15
0
  1. Dental Student
On the serious NOTE



why is it that when you take a big dump you get light headed?




Serious NOTE

Um, what? I never get light-headed taking a dump. But I guess it's possible you crap bigger turds than normal.

Or because the body shunts blood from the systemic to the GI system. That shunt may, in the short term, consequently decrease intracranial blood pressure, making you feel light-headed.
 

DrSphinx

Member
10+ Year Member
May 14, 2008
41
0
0
  1. Pre-Dental
I seriously doubt it's the vagus, because the anal sphincter's under somatic control (and for a good reason!).

This is actually only half true. The internal anal sphincter is entirely involuntary in nature, the external anal sphincter is voluntary.

Not really sure about the vagus but it is a justifiable answer since it does innervate parts of the large intestine.

yay anatomy and gastrointestinal physiology courses...college at its finest!
 

Quattro DMD

Full Member
10+ Year Member
5+ Year Member
May 20, 2008
460
4
101
Dallas, TX
  1. Resident [Any Field]
To the OP, you may be getting light headed if you're relying too much on the Valsalva maneuver. You may want to increase the amount of fiber in your diet. I suggest a half cup of Quaker old fashion oats per day. If you are really clogged I would also recommend a Monster engergy drink with 1-2oz of almonds.
 

mena22787

Full Member
10+ Year Member
Sep 5, 2007
93
0
201
Massachusetts/RI
  1. Pre-Dental
Maybe you're trying so hard with your abdominal press that you just forget to breath?

i believe it also has something to do with breathing--i think that when you have a bowel movement, your vocal cord thingamajig closes to increase abdominal pressure and therefore help push the feces out of the rectum. thus, a lack of breathing may cause the dizziness experienced...
 
About the Ads
Status
Not open for further replies.