Ch. 17 The Heart

Front

What is the approximate thickness of the left ventricle compared to the right ventricle?

Back

The left ventricle has walls that are approximately 3 times thicker than the right ventricle.

Front

What is the function of the atrioventricular sulcus in the heart?

Back

It is a boundary between the atria and ventricles.

Front

What is the approximate weight of the human heart?

Back

The human heart weighs approximately 250-350 grams.

Front

What is the primary function of the fibrous skeleton in the heart?

Back

To give cardiac muscle cells something to pull on when contracting.

Front

How does the pulmonary circuit support cellular respiration in body tissues?

Back

By delivering oxygen for energy production and removing carbon dioxide waste.

Front

What are the two main circuits of the cardiovascular system?

Back

The systemic circuit and the pulmonary circuit.

Front

What is the role of the left atrium in the heart?

Back

The left atrium receives oxygenated blood from the lungs.

Front

What is the role of the right ventricle in the heart?

Back

The right ventricle pumps deoxygenated blood to the lungs.

Front

What is the significance of the heart valves?

Back

Heart valves ensure unidirectional blood flow through the heart.

Front

What is cardiac output?

Back

Cardiac output is the volume of blood the heart pumps per minute.