Session 1 Diaphragm

Question 1

Functions of Diaphargm

Answer 1

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

Question 2

Sternal origin

Answer 2

2 muscular slips to xiphoid process

Question 3

costal origin

Answer 3

internal surface of inferior 6 costal cartilages and ribs bi-laterally

Question 4

Vertebral Origin

Answer 4

right crus, left crus via arcuate lig

Question 5

Median arcuate lig
Medial
Lateral

Answer 5

median- aorta
medial psoas
lateral ql

Question 6

Nerve Supply of the Diaphragm

Answer 6

C3,C4,C5, right and left phrenic alive

Peripheral parts- sensory supply from the inferior 6 intercostal/subcostal

Question 7

Superior Surface Arterial Supply

Answer 7

Pericardiacophrenic and Musculophernic arteries- branch of internal thoracic artery

superior phreninc areries

Question 8

Inferior Surface of the Diaphragm

Answer 8

inferior phrenic arteries

Question 9

Caval Opening

Answer 9

T8- transmits infeiror vena cava, phrenic nerve

Question 10

Osephageal Hiatus

Answer 10

T10- oseophagus and vagus n

Question 11

Aortic Hiatus

Answer 11

T12- Aorta passes posterior the diaphragm

Thoracic duct and azygous vein