Larger food particles move into the chamber and secreted enzymes break the food down into smaller fragments 3. The smaller food fragments then enter the surrounding cells by endocytosis 4. The indigestible food is discharged through the opening E. Two-ended digestive tracts allows the specialization of different regions for specific processes that take place in a fixed order 1. Most of the bodily waste leaves through the urinary system 3. Sequential processing of food can occur with a two-ended digestive tract since food passes each point only once a.
Specialized regions can operate with unique enzymes and environmental conditions b.
A series of successive reactions allow the animal to absorb a variety of valuable molecules while leaving indigestible materials behind 4. Behavioral adaptations also help digestion 5. In movement, the food is agitated within specialized regions to push food through the system 2. In secretion, lubricants, enzymes, and detergents are produced 3. In digestion, large molecules are broken down into their component building blocks 4.