YOU SAID:
A heart attack occurs when an artery that sends blood and oxygen to heart is blocked.
INTO JAPANESE
心臓発作は、心臓に血液と酸素を送る動脈が詰まると発生します。
BACK INTO ENGLISH
A heart attack occurs when the arteries that supply blood and oxygen to the heart become clogged.
INTO JAPANESE
心臓発作は、心臓に血液と酸素を供給する動脈が詰まると発生します。
BACK INTO ENGLISH
A heart attack occurs when the arteries that supply blood and oxygen to the heart become clogged.
That didn't even make that much sense in English.