Here's why:
* Breakdown: The digestive system breaks down large food molecules into smaller, simpler molecules that cells can absorb and use. This process involves both mechanical (chewing, churning) and chemical (enzymes) breakdown.
* Absorption: The digested nutrients are then absorbed into the bloodstream through the small intestine.
* Delivery: The bloodstream carries these nutrients to all cells throughout the body.
While other systems play a role in cellular processes, the digestive system is specifically responsible for preparing food for cellular utilization.
