Gastrointestinal System, Defecation 

Take a bow, Dr Campbell! Wonderful explanation! Delivered with so much passion and dedication! Thank you, Dr _/\_

A software engineer here , Aspiring to become a doctor only because of Sir John Campbell . Lots of gratitude from India .

Thank goodness for this video. I was having the hardest time getting the hang of this. I was backed up like you wouldn't believe.

Gives a whole new meaning to “mass transit” 😆

I'm blessed finding you here sir ❤ thanks for all you do 💞

spoken well. two issues 1. Internal sphincter and external sphinters are 2 concentric rings of muscles rather than inside outside muscle shown 2. Straining causes haemorrhoids cushions to enlarge, and become haemorrhoids. What was meantioned was that straining caused varices,. rectal varices are caused by Portal hypertension and not straining.

Such a beautiful act ,you have made this explain in the most simple manner 🙏🏻 beautiful simply thankyou

O’ my ! 😂 Those faecal matter models were too dark ! I’ve never seen turds 💩 in that hue !

Thank you Dr. Campbell!

Great teaching 😊😊😊

John. Im speechless on this one.

thank you very much for your lovely videos :)

Your explanation is very good it made me crack my interview, can you please make video on integumentary system

great video, v well explained, thanks, please keep the videos coming!

it's a rare, and amazing explanation Dr Campbell, very practical...

Thank you very much for the useful information . My question is, is there a cure for ANISMUS?

Thank you That was so clear

Really helpful thanks sir

May God bless you 🙏

Lovely explained, thank you so much

Dr, can you please share your insight on mechanism of defecation reflex in infants? They don't seem to have ability of voluntary stool passing? How is it different in infants than adults? Thanks in advance.

excellent!

I've IBS,Diverticulitis&Polyps. I've Constipation&Diarrhea. On Colofac&Immodium.

Top notch

Thamk u sir well expl😍

Thank sir, it is really helpful. Could you help me to answer this question? The question is where is stool gonna be if we do not relax external sphincter? Is it still in the rectum or it's gonna back to the sigmoid colon? Thank you.

thank you amazing

thank you..

Long live Sir.

Is it possible for the sympathetic nerves of the colon to be overactivated and working against the parasympathetic? And if so, what causes this?

Thank you very much sir

Thank you sir...

well done sir

I hope it’s playdough 😳

ah the good 'ol days..

so mthat explains why i have to use the bathroom right after i eat, good in,bad out!!!

watch on 1.5 speed

Well explained , I know that because I understood what you said , lol ... the little brown turds made me laugh , did you wash your hands after playing w/them ?? ... I was waiting for you to tell why there "are" times when you CANNOT voluntarily control the contraction of your striated external sphincter and have a blowout in your pants or where ever else is convenient at that very involuntary second , lol (i.e. , behind a bush , tree , etc.) !!! ...

I read that external sphyncter contracts at the begining of defecation, it doesn't make sense, now İ'm confused

Do we feel defecation reflex when there is feaces in the sigmoid colon?

Is ext anal sphincter controlled by s4 Or pudendal nerve(somatic)

Sir I have disenergy defecation problem how to overcome this problem

So more fiber

Please reply to me urgently. When you expel stool, does the anus form a ring and become prominent when stool are exiting? Is that the normal physiology or I have anal prolapse!? Your reply will save me travelling to the doctor and embarrassing myself

I cant finish watching this bcs i feel irritated listening to your pen marker 😥

you have constipation

Well that was informative with props included