Layers of the heart | Human anatomy and physiology | Health & Medicine | Khan Academy

What are the two atrioventricular valves?

• tricuspid and mitral valves

• pulmonic and aortic valves

What do the Chordae Tendineae do?

• Keep the valves from flipping backwards.

• Pull the valves open. 

What is a septum?

• An opening

• A wall

What is a ventricular septal defect?

• Blood flowing from the left ventricle back into the right ventricle. 

• Blood flowing from the left atrium to the right atrium. 

What is the inner lining of the heart called?

• endocardium

• myocardium

• pericardium

What does myo-  mean?

• around 

• muscle

• within

Where are the contracile muscles of the heart located?

• Epicardium

• Endocardium

• Myocardium

What structure surrounds the heart?

• endocardium

• myocardium

• pericardium

What is the outer layer of the pericardium called?

• Visceral

• Parietal

What is another name for the visceral pericardium?

• Endocardium

• Myocardium

• Epicardium