What is the junction in the digestive tract?
Could you please clarify for me what exactly the junction in the digestive tract refers to? Is it a specific anatomical location, a functional transition, or something else entirely? I'm curious to understand how this junction contributes to the overall process of digestion and what role it plays in ensuring that nutrients are properly absorbed into the body. If possible, could you provide some additional context or examples to help me better grasp this concept?