Air movement in and out of the lungs by increasing and decreasing the size of the thoracic cavity by movement of the chest wall and action of the respiratory muscles; breathing.
Pulmonary Vein
Vein that drains blood from the lungs to the left atrium.
Pulmonary Trunk
The large artery that carries blood from the right ventricle to the lungs.
Pulmonary Semilunar Valve
Valve between the right ventricle and the pulmonary trunk.
Pulmonary Circulation
Blood flow from the right ventricle to the lungs and back to the left ventricle, also known as lesser circulation.
Pubic
Relating to the pubis.
Puberty
Period when final maturation of the reproductive system occurs; adolescence.
Pseudostratified Columnar Epithelium
Columnar epithelium that, although appears to be in layers, is not in layers.