In this Article, we are sharing mnemonics for the Structure passing or are at the level of Sternal Angle. Sternal angle of Louis is an important anatomical mark.
“The sternal angle is the angle formed between the manubrium of the sternum and the body of the sternum (manubriosternal junction)”
Sternal Angle Mnemonics:
“RAT PLLANT” is mnemonic for what passes through the sternal angle.
R for Rib (2nd).
A for Aortic arch.
T for Tracheal bifurcation.
P for Pulmonary trunk.
L for Ligamentum arteriosum.
L for Left recurrent laryngeal.
A for Azygos Vein.
N for Nerves (Cardiac and Pulmonary plexuses).
T for Thoracic duct.
“PLOT of EARTH PLLANTS” Another more detailed mnemonics for the Sternal angle.
P for Phrenic and Vagus Nerve.
L for Lymph Nodes
O for Oblique fissure of lungs (top of it)
T for Thymus
E for Esophagus (trending right to left)
A for Aortic Arch (bottom of the arch)
R for Rib (2nd), Manubrium-sternal angle, T4(more specifically T4-5 disc)
T for Tracheal Bifurcation (Carina: Latin –like keel of boat)
H for Heart.
P for Pulmonary trunk bifurcation
L for Left Recurrent Laryngeal (Looping under Aorta).
L for Ligamentum Arteriosum: Connects Aortic Arch to Pulmonary.
A for Azygous vein arches over the root of the Rt. Lung and opens in SVC.
N for Nerve plexi: Cardiac and Pulmonary Plexus.
T for Thoracic duct (on its way to drain into the Left Subclavian).
S for SVC (Superior vena cava) going down.
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