Each part of the "bunch of grapes" model represents a component of the human respiratory system as follows:
- The main stem of the bunch of grapes represents the trachea (windpipe), which is the main airway that connects the nose and mouth to the lungs.
- The large branching stems branching from the main stem represent the bronchi , the two primary branches that lead air into each lung.
- The smaller stems branching from the bronchi represent the bronchioles , the smaller airways within the lungs that further distribute air.
- The individual grapes represent the alveoli or air sacs, where gas exchange occurs between the air and the blood.
This model illustrates how air travels from the trachea through branching bronchi and bronchioles until it reaches the alveoli for oxygen exchange
