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Diaphragm Dr. Hassan Shaibah.

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Presentation on theme: "Diaphragm Dr. Hassan Shaibah."— Presentation transcript:

1 Diaphragm Dr. Hassan Shaibah

2 Diaphragm Function: Primary muscle of respiration
Increase vertical diameter of thoracic cavity Increases abdominal pressure )Urinations, defecations & Parturition “Childbirth”) Weight lifting Thoracoabdominal pump ( blood & lymph back to the heart)



5 2)central tendon part (support heart)
Diaphragm features: has: 1)Muscular part 2)central tendon part (support heart)

6 thorax Diaphragm Separate abdomen

7 Level may vary according to:
respiration Setting vs. standing distention of abdominal viscera)

8 J From side shape like inverted J

9 Dome shaped muscle

10 Right dome higher than left

11 1)Sternal part “post. Xiphiod process”
Has 3 origin: 1)Sternal part “post. Xiphiod process” 2) Costal part lower 6 rips 3)Vertebral part 2 crura and ligaments

12 Insertion central tendon part

13 1 2 3 Left crus 1st 2 lumbar Right crus 1st 3 lumbar

14 Has 3 ligaments 1)Median arcuate ligament ( 2 curua connected)
Cross over Aorta

15 1 2 2) Medial arcuate ligament L2 to TP of L1

16 1 2 3)Lateral arcuate ligament L1 to TP 12th rib

17 3 main Openings: Caval Esophageal Aortic

18 Location of the 3 main Openings I Ate (8) 10 Eggs At Midnight (12)


20 Structures passing through the openings
Aortic T12 Aorta , thoracic duct & Azygos vein Sympathetic trucks pass posterior to Medial arcuate ligament Superior epigastric vessels between sternal and costal part

21 Caval opening IVC & branch from RT phrenic n

22 Esophageal opening Esophagus Vagus
esophageal branch from left gastric vessels

23 Aortic opening Aorta thoracic duct Somtime Azygos vein

24 Nerve supply Motor phrenic nerve (C3-5) Sensory :
1)Central part by phrenic n. 2)Peripheral part lower 6 intercostal nerves










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