Powerpoint 2 Flashcards
What are the four regions of the mediastinum?
- superior
- inferior (anterior, middle, posterior)
The _____ is the breast bone at midline of chest.
Sternum
What is the vital organ of respiration?
Lungs
Circulation of thorax
Esophagus
Branchi
Pericardium
Lungs
Thoracic walls
The ____ is subdivisions of the thoracic cavity.
Mediastinum
The sternum consists of which three sections?
- manubrium (top portion that connects to clavicle to form suprasternal notch)
- body (larger middle section)
- xiphoid process (small bottom portion)
What is the purpose of the thorax?
Protect vital organs within thoracic cavity and prevent collapse of the thorax during inspiration.
What is the main respiratory muscle?
Diaphragm
____ aids in the exchange of gases.
Trachea
The lungs are surrounded by a ____ ____ with fluid in between.
Pleural sac
How many lobes does the right lung have?
Three lobes (superior, middle, inferior)
How many lobes does the left lung have?
Two lobes (superior and inferior)
Drainage of the thoracic cavity is primarily from the ____ ____ which drains into the superior vena cava.
Azygos vein