Anatomy Respiratory Cramming Flashcards
What are the 3 attachments of the diaphragm?
- Lumber vertebrae and acute ligaments
- Costal cartilages of ribs 7-12
- Xiphoid process of the sternum
What is the one central attachment of the diaphragm?
Central tendon
What are crura?
The parts of the diaphragm that arise from the vertebrae and are tendinous in structure
Describe the right crus
- Arises from L1-3
- Some fibres from the right crus surround the oespohageal opening and help prevent reflux of gastric contents
Describe the left crus
- Arises from L1-2 L2 and their intervertebral disks
How many hiatuses does the diaphragm have?
3 - dumbass
What are the names of the hiatuses of the diaphragm?
- Caval opening
- Oesophageal hiatus
- Aortic hiatus
What vertebral levels correspond to which hiatus within the diaphragm?
Caval opening - T8
Oesophageal hiatus - T10
Aortic hiatus - T12
Where is the caval opening located?
Within the central tendon of the diaphragm
Where is the oesophageal hiatus located?
Through the muscular sling of the right crus
Where is the aortic hiatus located?
Between the left and right crus
What is the function of the caval opening
Transmits the inferior vena cava and the right phranic nerve
What is the function of the oesophageal opening?
Transmits the oesophagus and both vagus nerves
What is the function of the aortic hiatus
Transmits:
- Aorta
- Azygous vein
- Thoracic duct
- Hemiazygos vein
Where is the origin of the phrenic nerve?
C3-5