Tiêu đề item 5 the diaphragm esophagus 15 august.pdf ✅

2 THORAX CARD : CONTAIN ONLY MUST KNOW TOPIC / DON’T COPY VALID FOR 2025 2. Muscular Portions Origin: The diaphragm originates from the xiphoid process of the sternum, the lower six costal cartilages, and the lumbar vertebrae (via the crura and arcuate ligaments). Insertion: It inserts into the central tendon of the diaphragm. The diaphragm has three main muscular components: 3. Crura (Right and Left Crus) ● Right Crus: Origin: Arises from the bodies of the upper three lumbar vertebrae. ● Left Crus: Origin: Arises from the bodies of the upper two lumbar vertebrae. ● Function: The crura anchor the diaphragm to the lumbar spine and form the esophageal hiatus.
3 THORAX CARD : CONTAIN ONLY MUST KNOW TOPIC / DON’T COPY VALID FOR 2025 4. Arcuate Ligaments ● Median Arcuate Ligament: Connects the right and left crura, forming an arch over the aortic hiatus. (over the aortic hiatus). ● Medial Arcuate Ligament: Spans from the body of L1 to the transverse process of L1. (Over the psoas major muscles). ● Lateral Arcuate Ligament: Spans from the transverse process of L1 to the 12th rib. (over the quadratus lumborum muscles