Respiratory System

polypeptide with iron: binds with oxygen to form oxyhemoglobin

several hundred hemoglobin molecules per each red blood cell

Carbaminohemoglobin

watery part of the blood

carbonic acid

dissociated by hemoglobin to from bicarbonate ions and hydrogen

CO2 or acid in chemoreceptors in medulla oblongata, located in brain stem: medulla oblongata controls heart rate and breathing

oxygen receptors in carotid and aortic

alveoli rupture

gas trapped in lungs: collapsed lung