MD3001 Thoracic Cavity Questions and Correct Answers | Latest Update | A+

What are the functions of body cavities? Ans: 1. Movement of organs 2. Expansion/contraction of organs 3. Compartmentalisation What are the 2 layers of pleura? Ans: 1. Visceral - organ 2. Parietal - wall What does the pleura cover? Ans: 1. Lungs 2. Diaphragm 3. Thoracic wall Where does pleura reflect itself around? Ans: Root of lung What are the 4 parts of parietal pleura? Ans: 1. Costal 2. Cervical 3. Mediastinal 4. Diaphragmatic What is the mediastinum enclosed by? Ans: 1. Right and left pleural sacs 2. Sternum 3. Costal cartilages 4. Thoracic vertebrae 5. Diaphragm What is the mediastinum separated into? (4) Ans: Superior Inferior - Anterior - Middle - Posterior Where is the superior mediastinum? Ans: portion of the mediastinal space superior to transverse plane of the sternal angle and extending upward to the superior thoracic aperture Where is inferior mediastinum? Ans: Inferior to the transverse plane through the sternal angle and the diaphragm Structures on the RIGHT of mediastinum Ans: 1. Superior vena cava 2. Azygos arch 3. Inferior vena cava Structures on the LEFT of mediastinum Ans: 1. Left common carotid artery 2. Left subclavian artery 3. Aortic arch 4. Thoracic aort