Why are the rings of cartilage surrounding the trachea

Last updated: 7/8/2022

Why are the rings of cartilage surrounding the trachea C-shaped? The C rings of cartilage allow the esophagus to expand during swallowing The C rings of cartilage allow the trachea to change diameter during breathing The C rings of cartilage keep the trachea patent (open) more than one answer is correct