Components of Cardiovascular System: Heart & Blood Vessels

What is the function of the atria in the cardiovascular system?

Storing venous return during ventricular systole

Why is the loss of ventricular function considered fatal?

It is essential for pumping blood to the circulation

Which valve is present between the left atrium and left ventricle?

Mitral valve

What causes heart sounds in the cardiovascular system?

Closure of valves Signup and view all the answers

What is the main function of big elastic arteries like the aorta?

Expanding during ventricle systole to accommodate blood Signup and view all the answers

Where is the main site of resistance to blood flow in the cardiovascular system?

Arterioles Signup and view all the answers

Which side of the heart pumps deoxygenated blood to the pulmonary vessels?

Right ventricle Signup and view all the answers

Why is the wall of the left ventricle thicker than the wall of the right ventricle?

To pump blood against resistance in blood vessels Signup and view all the answers

In which part of the circulatory system does the exchange of gases occur between blood and alveolar air?

Capillaries Signup and view all the answers

What role does the systemic circulation play in the circulatory system?

Pumping oxygenated blood to tissues and organs Signup and view all the answers

Which type of vessels carry blood from venules back towards the right atrium?

Veins Signup and view all the answers

What is the function of the right ventricle in the cardiovascular system?

Pumping deoxygenated blood at low pressure to the pulmonary vessels Signup and view all the answers

What is the main function of capillaries in the cardiovascular system?

Site of exchange of nutrients, water, and gases between blood and interstitial fluid Signup and view all the answers

Where is the Sinoatrial (SA) node located in the heart?

Right atrium Signup and view all the answers

Which type of muscle fibers in the heart form the conducting system?

Autorhythmic fibers Signup and view all the answers

What is the main function of veins in the cardiovascular system?

Act as reservoir vessels Signup and view all the answers

What is the role of Atrioventricular (AV) node in the heart's conduction system?

Determines heart rate under normal conditions Signup and view all the answers

Which structure in the heart is known as the 'pacemaker'?

Sinoatrial (SA) node Signup and view all the answers