Question

the _____ is where the respiratory and digestive passage come together​

Answer 1

The diaphragm is where the "respiratory and digestive passages come together".

Explanation:

The diaphragm is actually a "thin skeletal muscle" that sits that is found at the "base of the chest" and separates the "abdomen from the chest". This layer "contracts and flattens when in inhale stage".

This creates a "vacuum effect" that "pulls air into the lungs". On an exhale, the "diaphragm relaxes" and the air is pushed out of lungs. Hence the "diaphragm" is the "layer of respiratory" and digestive passage come together.