EVERYDAY SCIENCE

Detailed explanation-1: -The pharyngeal nervous system orchestrates feeding behavior in planarians.

Detailed explanation-2: -The pharynx connects the mouth to the gastrovascular cavity. This structure branches throughout the body allowing nutrients from food to reach all extremities. Planaria eat living or dead small animals that they suck up with their muscular mouths.

Detailed explanation-3: -Pharynx region: The pharynx itself is a thick, muscular tube; when Planaria eats, it everts the pharynx, sticking it out of the body to suck up bits of food.

Detailed explanation-4: -The pharynx is a distinctive organ in the center of the body of planarians.

Detailed explanation-5: -The mouth is located at the tip of a small, hose-like tube (the pharynx) that tucks into the gastrovascular cavity in the middle of the flatworm’s underside. Food enters, and wastes exit, through the same tube. It breathes through its outer covering (epidermis).