Hemorrhoids are swollen veins inside and around the back entry (butt) and the butt-centric waterway (rectum). Some of the time, the veins around the butt swell, get to be extended, thin and get to be chafed when passing defecation.

The butt-centric channel is the last portion of the digestive organ and is around 4cm long. At the lower end of the butt-centric channel is the opening to the outside as a rule alluded to as the rear-end, through which the defecation pass. At the upper end, the butt-centric waterway associate with the rectum, which is additionally a portion of the digestive organ.

Read... http://scarletnews.com/2015/11/06/how-hemorrhoids-cause-internal-bleeding/