Question

2) The heart is made up of ...​

Answer 1

Answer:

Pericardium, Myocardium and Endocardium.

Explanation:

The heart is made up of three layers of tissue: Pericardium – a thin outer lining that protects and surrounds your heart. Myocardium – a thick muscular middle layer that contracts and squeezes blood out of your heart. Endocardium – a thin inner lining.

The heart is enclosed in a protective sac, the pericardium, which also contains a small amount of fluid. The wall of the heart is made up of three layers: epicardium, myocardium, and endocardium. The heart pumps blood with a rhythm determined by a group of pacemaking cells in the sinoatrial node.

Answer 2

Answer:The heart is enclosed in a protective sac, the pericardium, which also contains a small amount of fluid. The wall of the heart is made up of three layers: epicardium, myocardium, and endocardium. The heart pumps blood with a rhythm determined by a group of pacemaking cells in the sinoatrial node.