18 Questions
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
What is the main function of big elastic arteries like the aorta?
Expanding during ventricle systole to accommodate blood
Where is the main site of resistance to blood flow in the cardiovascular system?
Arterioles
Which side of the heart pumps deoxygenated blood to the pulmonary vessels?
Right ventricle
Why is the wall of the left ventricle thicker than the wall of the right ventricle?
To pump blood against resistance in blood vessels
In which part of the circulatory system does the exchange of gases occur between blood and alveolar air?
Capillaries
What role does the systemic circulation play in the circulatory system?
Pumping oxygenated blood to tissues and organs
Which type of vessels carry blood from venules back towards the right atrium?
Veins
What is the function of the right ventricle in the cardiovascular system?
Pumping deoxygenated blood at low pressure to the pulmonary vessels
What is the main function of capillaries in the cardiovascular system?
Site of exchange of nutrients, water, and gases between blood and interstitial fluid
Where is the Sinoatrial (SA) node located in the heart?
Right atrium
Which type of muscle fibers in the heart form the conducting system?
Autorhythmic fibers
What is the main function of veins in the cardiovascular system?
Act as reservoir vessels
What is the role of Atrioventricular (AV) node in the heart's conduction system?
Determines heart rate under normal conditions
Which structure in the heart is known as the 'pacemaker'?
Sinoatrial (SA) node
Learn about the atria and ventricles in the cardiovascular system, their functions, and the importance of valves like the tricuspid valve in maintaining blood flow. Understand how the heart structures work together to ensure proper circulation.
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