| A | B |
| alveoli | Small bubble like structures of the lung where gases are exchanged between the atmospheric air and the blood |
| expiration | Breathing air out of the lungs |
| external respiration | Passage of oxygen from the air in the alveoli into the blood |
| glottis | Space between the vocal folds |
| internal respiration | Passage of gases between blood and body cells |
| hemiglobin | Pigment of RBC's that transports oxygen and carbon dioxide |
| residual volume | Amount of air in lungs after all the vital capacity has been expired |
| tidal volume | Amount of air that enters the lung during a normal inspiration or leaves the lung during a normal expiration |
| inspiration | Filling the lungs with air |
| ingestion | Intake of food |
| egestion | Elimination of nonsoluble, undigested wastes |
| mastication | Chewing of food |
| stomach | Organ where the muscular walls churn and mix food with gastric juices |
| peristalisis | Muscular movements that move food in the alimentary canal |
| small intestine | Digestive organ where most of the digestion and absorption of food occurs |
| large intestine | Part of alimentary canal that extends from the small intestine to the anus |
| emulsificaiton | Process by which liquid fats are made into small droplets within another liquid. |