The trachea is a rigid tube about 4.5 inches long and 1 inch wide. ... The bronchi also contain C-shaped cartilage rings like the trachea. Deeper in the lungs, each bronchus divides into secondary and tertiary bronchi, which continue to branch to smaller airways called the bronchioles.
The 3 theories most commonly thought of when thinking ot talking about psychology are, psychoanalytic theory, learning theory, and cognitive theory. These theories seek/ help to explain much of human behavior
