Pleural cavity Flashcards
innervation of thoracic wall
- ventral rami T1-T11
- lateral cutaneous branches
- anterior cutaneous branches
blood supply of thoracic wall
- posterior intercostal aa
- anterior intercostal aa
describe the pathway of the anterior intercostal aa
- arise from internal thoracic a
- run in intercostal grooves & anastomose on lateral portion of body wall
describe the pathway of posterior intercostal aa
- branch from superior intercostal a in intercostal spaces 1 & 2
- rest branch from thoracic aorta
- run in intercostal grooves and anastomose on lateral portion of body wall
describe and locate the internal thoracic artery and its branches
- arise from thyrocervical trunk of subclavian a
- descend into thorax deep to clavicle & 1st costal cartilage
- bifurcate into musculophrenic & superior epigastric aa
what are pleural sacs?
sac of 2 continuous membranes which enclose each lung
define visceral pleura
invests all surfaces of lungs
define parietal pleura
lines pulmonary cavities
the space between pleura is filled with ____
pleural fluid
name the divisions of parietal pleura
- costal
- mediastinal
- diaphragmatic
- cervical
name the 2 recesses of the pleura
costodiaphragmatic
costomediastinal
define pleurisy & its symptoms
- inflammation of pleurae
- sharp chest pain, worsens during breathing
etiology of pleurisy
- viral, bacterial & fungal pneumonias
- autoimmune disorders (rhuematoid arthritis)
- lung cancer
- rib fracture
- inherited conditions (sickle cell disease)
Right vs Left lung
lobes
right: superior, middle, inferior
left: superior, inferior
Right vs Left lung
fissures
right: oblique & horizontal
left: oblique
