| A | B |
|---|
| Lungs | the gas exchange organ in air-breathing vertebrates and some other animals |
| Diaphragm | muscle that forms the floor of the chest cavity |
| Pleura | two-layered membrane that encloses the lungs |
| Nasal Passages | hollow spaces in the nose that transports air |
| Pharynx | air travels through this space after leaving the nasal passages |
| Larynx | another name for the voice box |
| vocal cords | membranes that are streched across the inside of the larynx |
| Trachea | another name for the wind pipe |
| diaphragm | seperates the lungs from the abdominal cavity |
| pleura | two layered membrane that surrounds the lungs |
| alveoli | grape like clusters found at the end of the broncholi were oxygen is diffused tothe capillaries |
| nasal cavity | moistens, warms and filters the air |
| pharynx | holds te air after leaving the nasal cavity |
| larynx | made of cartilage and contains flexible connective tissue that vibrates when air is passed over it |
| bronchi | the first division of after the trachea |
| breathing | inhalation of air in to the lungs |
| external respiration | the exchange of oxygen and carbon dioxide between the air and the blood in the lungs |
| Internal respiration | the exchange of oxygen and carbon dioxide etween the blood and the capillaries and the body cells |
| intercostal muscles | help to expand the chest cavity |
| lactic acid | during excerise ____ builds up in the muscle causing the respiratory center to be stimulatedand increase respiration |
| diffusion | oxygen is passed from the aveoli to the capillaries by this process |
| hemoglobin | the agent in red blood cells that carries oxygen tothe blood |
| cellular respiration | causes most of the carbon dioxide to form in the blood |
| bicarbonate ion | causes 70% of carbon dioxide tobe transfered to the blood |
