Question

Place the steps of a myocardial infarction in order, from the first step to the last. ≡ Unstable plaque develops in coronary artery ≡ Platelet clumping, clot formation ≡ Clotting cascade activated ≡ Blotd stops flowing past clot ≡ Heart tissue beyond clot dies 三 Muscle associated with dead heart tissue stops working

Answer 1

A myocardial infarction, or heart attack, involves several steps including the development of unstable plaque in the coronary artery, clot formation, activation of the clotting cascade, obstruction of blood flow, and death of heart tissue beyond the clot.

Step-by-step explanation:

Steps of a Myocardial Infarction:

1. Unstable plaque develops in coronary artery: Atherosclerosis leads to the buildup of plaque in the coronary artery.
2. Platelet clumping, clot formation: If the plaque ruptures, it can cause microscopic tears in the artery wall, leading to blood clot formation.
3. Clotting cascade activated: The presence of a clot triggers a cascade of events that activates the body's clotting system.
4. Blood stops flowing past clot: The blood flow to the heart tissue is obstructed by the clot.
5. Heart tissue beyond clot dies: The lack of blood flow and oxygen to the heart tissue causes ischemia and ultimately results in the death of the tissue.