Session 1 Diaphragm Flashcards
Functions of Diaphargm
Primary mm of respiration- inspiration
Central tendon supports heart
2 domes support right and left lung
mm of abdominal straining
weight lifiting mm
thoracic abdominal pump
Sternal origin
2 muscular slips to xiphoid process
costal origin
internal surface of inferior 6 costal cartilages and ribs bi-laterally
Vertebral Origin
right crus, left crus via arcuate lig
Median arcuate lig
Medial
Lateral
median- aorta
medial psoas
lateral ql
Nerve Supply of the Diaphragm
C3,C4,C5, right and left phrenic alive
Peripheral parts- sensory supply from the inferior 6 intercostal/subcostal
Superior Surface Arterial Supply
Pericardiacophrenic and Musculophernic arteries- branch of internal thoracic artery
superior phreninc areries
Inferior Surface of the Diaphragm
inferior phrenic arteries
Caval Opening
T8- transmits infeiror vena cava, phrenic nerve
Osephageal Hiatus
T10- oseophagus and vagus n
Aortic Hiatus
T12- Aorta passes posterior the diaphragm
Thoracic duct and azygous vein