Lecture 5: Thoracic cavity & Wall Flashcards
Diaphram OIA
O: lumbar vertebrae, ribs 7-12, xiphoid process
I: all fibres converge to a central tendon
A: flattens in inhalation
Paralysis of the diaphragm
when a phrenic nerve is damaged, the corresponding half of the diaphragm will move up with pressure in inhalation
contents of the intercostal muscles & spaces
VAN (superior to inferior)
Veins
Arteries
Nerve
External Intercostals OIA
O: inferior border of a rib
I: superior border of lower rib
A: elevate the ribs, inspiratory
Internal Intercostals OIA
O: superior border of a rib
I: inferior border of a higher rib
A: expiration
Pulmonary Cavities contents
lungs/pleura
Mediastinum contents
heart/great vessels
Pleura details
-visceral pleura on the inside
-parietal pleura on the outside
- seperated by the pleural cavity
Pneumothorax
Collapsed lung
- visceral pleura is much smaller
- pressure in the pleural cavity is larger than that of the lung
- lung is deflated
Hemothorax
blood in the pleural cavity
Hydrothorax
fluid in the pleural cavity
Thoracentesis
insertion of a chest tube used to remove air/pus/blood/fluid from the intrapleural space
Percussion of the thoracic cavity
Solid Tissue: flat sound
Dense/fluid filled tissue: dull sound
Air: resonant sound
Right Tracheobronchial tree
- 1 main bronchus
- 3 lobar bronchi
- segmental bronchus
lobar bronchi seperated by a horizontal fissure and a oblique fissure
Left Tracheobronchial tree
- 1 main bronchus
- 2 lobar bronchi
- segemetal bronchus (makes room for heart indentation)
lobar bronchi seperated by an oblique fissure
