Flashcards in Diaphragm Deck (16):
What is a fibromuscular septum that seperates the thoracic cavity from abdominal cavity?
The diaphragm developed from what 4 origins?
peripheral rim of Body wall
Dorsal Mesentery of esophagus
The central tendon of diaphragm comes from what?
Septum transversum which arises from 3rd, 4th 5th cervical somites.
The muscle fibers of the diaphragm originate from what 4 areas?
Right crus (L1-3)
Left crus (L1-2)
Lower 6 ribs
Sternum (posterior aspect of xiphoid process)
The muscular fibers are inserted into what?
What are the 3 major openings in diaphragm at T8, T10 and T12?
T8: IVC, R phrenic N, Pericardiacophrenic vessels
T10: Esophagus, Vagus N
T12: Aorta, Thoracic duct, Azygos V
What passes through central tendon?
Inferior Vena Cava
The esophagus passes through what/
The aorta passes between and behind what?
R and L Crura
The diaphragm is innervated by what?
Phrenic N (C3,4,5)
The diaphragm is covered by what?
The peritoneum and pleura in the CENTER of diaphragm is innervated by what?
The peritoneum and pleura in PERIPHERY of diaphragm are innervated with what?
Lower 6 intercostal nerves
Condensation of fascia over psoas muscle is called what?
Medial arcuate ligament
Condensation of fascia over quadratus lumborum is called what?
Lateral arcuate ligament