Warning: assert() [function.assert]: Assertion failed in /home/content/75/10396475/html/libraries/loader.php on line 3
The Gastrocolic reflex
You are here: The Anal canal and the process of defecation The Gastrocolic Reflex


The Gastrocolic reflex

E-mail Print PDF


The Gastrocolic reflex.

The presence of a large volume of fluids or food in the stomach causes distention or stretching of the stomach wall.
This distention is sensed by stretch receptors in the muscular wall of the stomach and activates a generalized increase in colonic motility and mass movement of faecal material.

High intensity contractions of the circular muscles in the transverse colon trigger a propulsive mass movement which propels faeces towards the sigmoid colon and the rectum.

If a sufficient volume of faeces is deposited into the rectum, the resulting pressure will cause stretching of the muscles in the rectal wall.
This distention is detected by mechanoreceptors in the muscle wall and initiates
a) A reflex contraction of the sigmoid colon
b) Relaxation of the internal anal sphincter
c) Contraction of the external anal sphincter.

This process creates the urge to go.

Faeces are normally stored in the sigmoid colon and its contraction is the beginning of the defecation process.

However, the defecation reflex merely creates the urge to defecate and may be ignored to delay opening the bowel.

Defecation does not begin until conscious relaxation of the external anal sphincter and the puborectalis muscle takes place.

Conscious control of the external anal sphincter and control of the puborectalis muscle by adopting the correct posture allows you to delay defecation for a while until you are ready.

Voluntary relaxation of the external anal sphincter allows for a quick and easy bowel movement if the stool is well formed and the correct posture is adopted.

How to heal and prevent Bowel disorders

Diet is not about what you should NOT eat, it’s about what you should include in the diet that matters.
As long as your diet includes the correct balance of plant foods containing soluble fibre, insoluble fibre and resistant starch your colon will produce the perfectly formed stool. The important next step is to evacuate this stool without straining so that the body does not suffer from the pressures created each time the bowel is emptied.

In order to heal and prevent bowel disorders you need to make lifestyle changes that last the rest of your life time.

1. Include more fluids and plant food containing soluble fibre, insoluble fibre and resistant starch in the diet so that the perfectly formed stool will be made in the colon and beneficial bacteria will flourish and eliminate disease causing bacteria and fungi.

2. Evacuate the perfectly formed stool by adopting the squat posture to eliminate the need to strain during bowel movements.

It is not possible or safe to squat on the modern raised toilet seat installed in all western homes and it is impossible to squat for any length of time if you have not done this from childhood onwards. This makes the use of any raised platforms impossible to adapt to.

The SquattLooStool is designed to allow you to adopt the squat posture while seated comfortably on your raised toilet seat.
The single best and easiest lifestyle change you will ever make, leading to a healthier body.