i. Mouth: Involved in the ingestion of food, mechanical digestion (chewing), and the start of chemical digestion through saliva.

Alright Salisu — let's do this. Here are the roles of the specified sections of the alimentary canal: a) i. Mouth: Involved in the ingestion of food, mechanical digestion (chewing), and the start of chemical digestion through saliva. ii. Oesophagus: Transports food from the pharynx to the stomach via peristalsis. iii. Ileum: Primarily responsible for the absorption of nutrients, especially vitamin B12 and bile salts, into the bloodstream. iv. Large intestine: Absorbs water and electrolytes from indigestible food matter, forming feces for elimination. v. Rectum: Serves as a temporary storage site for feces before defecation. vi. Anus: The external opening through which feces are eliminated from the body during defecation. Send me the next one 📸