Diaphragm Flashcards
What happens in regard to the vena cava when the diaphragm constricts?
The vena cava becomes dilated which helps with blood flow
what happens to the esophagus when the diaphragm contracts?
It helps the esophagus contract which aids in swallowing
What is the diaphragm the chief muscle in?
Inspiration
What happens when their is irritation of the phrenic nerve?
Hiccups will occur due to spastic contractions of the diaphragm
What does the diaphragm separate?
thoracic cavity from the abdominal thoracic cavity
what boarders the diaphragm superiorily?
heart and lungs
what boarders the diaphragm inferiorly?
stomach, spleen, liver, and fat pad of left kidney
The development of the diaphragm?
The vertebral costal trigone is a whole id the diaphragm, 80% of the population has it and it is normally the site of a diaphragmatic hernia
What are the structures that pass through the diaphragm?
- Aortic Hiatus
- Crura
- Sympathetic trunk
- Esophageal Hiatus
- Vena Caval Foramen
- Epigastric Arteries
What passes through the diaphragm at the aortic Hiatus?
Aorta Thoracic Duct Lymph Channels Azygous Hemiazygous
Where does the aortic hiatus originate?
T12
what is located in the crura?
musculotendinous structures, anchors for the diaphragm,
Where does the crura arise and attach
arises at L1-L3
attaches at T12
What is the sympathetic trunk?
chain of ganglia
where does it pass through?
posterior arcuate ligament
