Diaphragm and the anterior abdominal wall

Question 1

What are the 2 recess of the diaphragm?

Answer 1

Costodiaphragmatic and costomediastinal recesses

Question 2

What is the function of the recess in the diaphragm?

Answer 2

Assist lung expansion during deep inspiration

Question 3

What are the attachments of the diaphragm?

Answer 3

Sternal - diploid process
Costal - lower 6 cartilages
Vertebral - left and right crus

Question 4

What are the attachments of the crus muscles?

Answer 4

Right - L1-L3
Left - L1-L2
The lumbocostal cartilages

Question 5

Where is the aortic opening and what does it transmit?

Answer 5

T12 - aorta, azygous vein, thoracic duct and sympathetic chain

Question 6

What can be found leaving the diaphragm at T10?

Answer 6

Oesophagus and vagus nerve

Question 7

Where is the caval opening and what does it transmit?

Answer 7

T8 - inferior vena can, right phrenic nerve

Question 8

What is the motor innervation of the diaphragm?

Answer 8

Phrenic nerve (C3,4,5)

Question 9

What is the sensory innervation of the diaphragm?

Answer 9

Centrally - phrenic nerve

Laterally - Lower 5 intercostal nerves

Question 10

What are the functions of the diaphragm? (3)

Answer 10

Muscle of ventilation
Aids maculation, defection, parturition
Aids lifting

Question 11

What forms the anterior abdominal wall?

Answer 11

1 central and 3 lateral muscles
Rectus abdominus
External oblique, internal oblique, transversus abdominus.
Transversus fascia below