A needle being inserted into the heart would travel through layers of the heart wall and coverings in which order, beginning on the outside?
a) Endocardium, myocardium, epicardium, pericardium
b) Pericardium, epicardium, myocardium, endocardium
c) Epicardium, endocardium, myocardium, pericardium
d) Pericardium, myocardium, epicardium, endocardium
