| A | B |
|---|
| respiration | exchange of oxygen and carbon dioxide |
| nares/nostrils | external openings of the nasal cavity |
| paranasal sinus | air-filled cavity within the skull that is lined with mucous membrane |
| pharynx | throat |
| nasopharynx | the portion of the throat behind the nasal cavity |
| oropharynx | the portion of the throat behind the oral cavity (mouth) |
| laryngopharynx | portion of the throat that connects to the larynx |
| larynx | voice box or chamber; contains the vocal cords |
| epiglottis | flap of cartilage that covers the larynx when swallowing |
| trachea | windpipe; tube that extends from the larynx to the bronchi |
| bronchus | tube that carries air from the trachea into the lungs |
| bronchiole | small branch off of the tube that carries air into the lungs |
| alveolus | tiny air sac found at the end of the terminal bronchioles; site of gas exchange |
| lungs | organs that contain the alveoli and bronchial tree |
| pleura | double-layered membrane that surround the outside of the lungs |
| parietal pleura | part of the pleura that is adhered to the thoracic wall |
| visceral pleura | part of the pleura that is adhered to the lung |
| pleural space | airtight space between the two layers of pleura that is filled with fluid to reduce friction |
| diaphragm | muscular wall that divides the thoracic cavity from the abdominal cavity |
| inspiration/inhalation | drawing air into the lungs; occurs when diaphragm contracts and moves downward |
| exhalation/expiration | forcing air out of the lungs; occurs when diaphragm relaxes and elevates |
| otolaryngologist/otorhinolaryngologist | Ear, nose and throat specialist |
| respirologist | specialist in diagnosing and treating disorders of the respiratory system |
| lobe | division of the lung; right lung has 3, left lung has 2 |
| nose | entrance to the respiratory tract |
| nose, pharynx, larynx | structures of the upper respiratory tract |
| trachea, bronchi, lungs | structures of the lower respiratory tract |
| nasal cavity | area behind the nose lined by mucous membrane and cilia |
| adenoids | masses of lymphatic tissue located in the nasopharynx |
| palatine tonsils | masses of lymphatic tissue located in the oropharynx |
