A deep notch in the alimentary canal at the junction of the esophagus and the stomach.
left lung has a cardiac notch.
The cardiac notch is a feature of the left lung that accommodates the position of the heart. It allows the heart to fit snugly within the thoracic cavity and provides space for its proper functioning.
to accommodate the heart
LEFT
Only the left lung has these features.
A deep notch in the alimentary canal at the junction of the esophagus and the stomach.
The dicrotic notch occurs during the late systole phase of the cardiac cycle, specifically when the aortic valve closes, causing a temporary rise in aortic pressure due to the recoil of blood in the aorta. This event marks the end of ejection and the beginning of diastole.
The left lung has a cardiac notch at its inferior medial end to accommodate the position of the heart. This notch allows space for the heart to fit into the left lung, preventing compression of the heart by the lung during breathing movements.
The cavity on the medial surface of the left lung that accommodates the contents of the mediastinum is known as the cardiac notch. This indentation allows space for the heart, which is located slightly to the left of the midline in the thoracic cavity. The cardiac notch is a prominent feature that distinguishes the left lung from the right lung, which does not have a similar indentation.
If you see the cardiac cycle and you see the dichrotic notch, and there is a slight elevation of the aortic pressure after this notch, that's because of the pressure exerted by the elastic recoil of the aorta. Just imagine a bigger hill, followed by a smaller hill and the indentation between these two hills is the dichrotic notch and the hill after this notch is the graphic representation of the elastic recoil of the aorta. Hope this helps.
Notch
Well a V-notch gives better accurate results when compared to rectangular notch.