Cardiac Layers (Heart Walls)

Adipose tissue is the thickest at the _______________________________

Ventricular Surfaces

Adipose tissue houses and protects the ____________________ and ________________________

Major Cornoary and Cardiac Vessels

Makes up 95% of the heart wall

Myocardium

Muscle layer of the heart

Myocardium

The muscle fiber cells of the ____________________________ are wrapped and bundled with sheaths

Myocardium

Which layer of the heart is responsible for the pumping action of the heart?

Myocardium

The bundles of the ______________________________ are organized ______________________ around the heart, which leads to a strong pumping action and the appearance of a __________________ motion when the heart beats

Myocardium; Diagonally; Torquing

The _________________________ is striated like skeletal muscle, but is cardiac muscle so it's therefore, _____________________________

Myocardium; involuntary

Which vessels feed the heart?

Coronary and Cardiac

Inner layer of the heart

Endocardium

The smooth lining of the chambers of the heart

Endocardium

This layer of the heart covers the valves of the heart

Endocardium

The _____________________ is continuous with the ___________________________ _______________________ of the large blood vessels attached to the heart

Endocardium; endothelial lining

Composed of mesothelium covering a variable layer of delicate fibroelastic tissue and adipose

Epicardium

Contains blood vessels and lymphatics that supply the myocardium

Epicardium

Outer layer of the heart

Epicardium

Visceral layer of the serous pericardium

Epicardium

What are the three layers of the heart external to internal

Epicardium; Myocardium; Endocardium