Simplify the following text for a Grade 11 native English-speaking person.
Original: Hemorrhoids ( US English ) or hemorrhoids ( British English ; pronounced \/ Ë hÉ mÉ rÉ '' É dz \/ ) , are vascular structures in the anal canal which help with stool control .
Simplified: Hemorrhoid or hemorrhoids are vascular structures in the anal canal which help with stool control .