Thorax, Lungs, Middle Mediastinum Flashcards
What is the clavicular notch on the manubrium for?
sternoclavicular joint
Where does the body of the sternum join the manubrium?
sternal angle
What does the head of the rib articulate with?
2 vertebral bodies and 1 disc
What does the tubercle of the rib articulate with?
1 transverse process
What forms the costal groove?
intercostal VAN
Where is the region of m attachment for pectoralis mm?
between UL and ant chest
What is the pectoralis major divided into?
clavicular and sternocostal heads
What envelopes the pectoralis minor m?
clavipectoral fascia to keep it separated during motion of upper limbs
What is a pleural tap (thoracentesis)?
- aspiration of fluids at midaxillary line or slightly posterior (furthest position from lungs)
- ICS 6 or 7
Why is it bad if the needle is inserted into ICS 8 or 9 during thoracentesis?
- may pierce diaphragm, liver or spleen
- also want to avoid intercostal n and vessels
Which lung has the horizontal fissure?
R
contents of middle mediastinum
- pericardium and heart
- phrenic nn applied to pericardium
- pericardiacophrenic vessels
- roots of great vessels to and from heart
What is the fibrous portion of the pericardium continuous with superiorly?
tunica adventitia of great vessels
What is the pericardial sac?
complete inner pericardial membrane (parietal and visceral)
What is a pericardial cavity?
- inside pericardial sac
- potential space b/t serous and parietal layers
- contains small ant of serous fluid
