+A pulmonary embolism occurs when a [Blood Clot](/wiki/blood_clot), often originating in the legs, suddenly blocks a [Pulmonary Artery](/wiki/pulmonary_artery) in the lungs. This critical obstruction impedes blood flow, stressing the heart and diminishing the body's oxygen supply.
+## See also
+- [Deep Vein Thrombosis](/wiki/deep_vein_thrombosis)
+- [Embolism](/wiki/embolism)
+- [Circulatory System](/wiki/circulatory_system)
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