| A | B |
|---|
| Endocardium | Smooth layer of cells that lines the inside of the heart |
| Myocardium | Muscular middle layer of the heart |
| Septum | Muscular wall that separates the heart into a right and left side |
| Artery | Blood vessel that carries blood away from the heart |
| Capillary | Blood vessel that connect arterioles with venules |
| Hemoglobin | Protein on red blood cells |
| Thrombocyte | Cells required for clotting process |
| Leukocyte | Cells that fight infection |
| Erythrocyte | 4.5 to 5.5 million per cubic millimeter of blood |
| Plasma | Fluid portion of blood |
| Veins | Largest artery in the body |
| Epiglottis | Leaflike structure that closes the larynx during swallowing |
| Nasal septum | Partition dividing the nose |
| Nasal cavity | Two hollow spaces in the nose |
| Cilia | Tiny hairlike structures in the nose |
| Pharynx | Correct name for the throat |
| Larynx | The voice box |
| Trachea | Tube from the larynx to center of chest |
| Bronchi | Carries air from the trachea to the lungs |
| Bronchiole | Smallest air tubes in the lungs |
| Alveoli | Air sacs that exchange gases |
| Lung | Organ of respiration |
| Inspiration | Process of breathing in air |
