Question

multiple choice question the heart and the proximal ends of the large blood vessels to which it attaches, are enclosed in a membranous sac called the _______. o pericardium o mediastinum o myocardium need help? review these concept resources.

Explanation:

The pericardium is the membranous sac that encloses the heart and the proximal ends of the large blood - vessels to which it attaches. The mediastinum is the central compartment of the thoracic cavity. The myocardium is the muscular tissue of the heart.

Answer:

pericardium