| Term | Definition |
|---|
| Thoracic cavity | Consists of the Bony Thorax and the Thoracic Viscera |
| Bony thorax | Includes the sternum, 2 clavicles, 12 pairs of ribs, 12 thoracic vertebrae |
| Thoracic viscera | Found within the thoracic cavity to include lungs and mediastinal structures; |
| Mediastinum | Space between the lungs; contains all thoracic organs except lungs |
| Esophagus | Posterior to trachea; structure of GI system |
| Respiratory system | Consists of the larynx, trachea, Rt and Lt. Bronchi, Rt. and Lt. Lungs |
| Larynx | Air passage between pharynx and trachea; composed of cartilage |
| Larynx | Voice box |
| Larynx | Suspended from the hyoid bone (C4 – C6) |
| Larynx | Airway leading to trachea |
| Thyroid cartilage | Adam's apple (anterior projection) |
| Epiglottis | Lid that keeps food from going into the trachea, or windpipe, during swallowing. |
| Cricoid cartilage | The lowermost cartilage of the larynx (throat) |
| Trachea | Fibrous, muscular tube with 16–20 C-shaped rings embedded in its walls for rigidity |
| Trachea | C6-T4/T5 |
| Carina | The last band of tracheal cartilage; divides into right and left main bronchi |
| Bronchus | One main ________ enters each lung. |
| Right main, left | _____ ____ bronchus is shorter, wider, and more vertical then ____. |
| splits, branches, 3, 2 | After entering each lung, each main bronchus again ______, sending ________ to each lobe of the lung (_ to the right, and _ to the left) |
| Lobar, terminal bronchioles | _____ branches continue to divide and decrease in size until they become ________ ___________ |
| Alveolar duct, duct, alveolar sacs | Terminal bronchioles connect to an ________ ____, each ____ ends in one or more ________ ____. |
| Alveoli, oxygen, carbon dioxide | Walls of sacs are lined with many _______ which perform function of carrying ______ to the bloodstream and removing ______ _______ from the bloodstream |
| Alveoli | Functional units of the lungs |
| Parenchyma | Highly elastic substance that make up the lungs |
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