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DR. HASSAN SHAIBAH Diaphragm. Diaphragm Function: Primary muscle of respiration Increase vertical diameter of thoracic cavity Increases abdominal pressure.

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Presentation on theme: "DR. HASSAN SHAIBAH Diaphragm. Diaphragm Function: Primary muscle of respiration Increase vertical diameter of thoracic cavity Increases abdominal pressure."— Presentation transcript:

1 DR. HASSAN SHAIBAH Diaphragm

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)

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

6 DiaphragmSeparate thorax 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” 2) Costal part lower 6 rips 3)Vertebral part 2 crura and ligaments Has 3 origin:

12 central tendon part Insertion

13 Right crus 1 st 3 lumbar Left crus 1 st 2 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 12 th rib

17 3 main Openings: Caval Esophageal Aortic

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

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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 ( C 3-5 ) Sensory : 1)Central part by phrenic n. 2)Peripheral part lower 6 intercostal nerves

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