It then enters the trachea. The trachea divides into two bronchi. One bronchus enters each lung. Each bronchus branches out into smaller tubes called bronchioles. Air travels through these ...
The right-hand side of the heart is responsible for pumping deoxygenated blood to the lungs. The left-hand side pumps oxygenated blood around the body. Each side of the heart consists of an atrium ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback