Cardiovascular System Quiz

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What is the primary function of the cardiovascular system?

To transfer oxygen and nutrients to tissues and remove metabolic wastes (correct)

To perform digestion and nutrient absorption

To generate hormones that regulate metabolism

To facilitate the exchange of gases in the lungs

Who is credited with the discovery of blood circulation?

Avicenna

Galileo Galilei

William Harvey (correct)

Hippocrates

Which part of the heart receives deoxygenated blood?

Aorta

Left atrium

Left ventricle

Right atrium (correct)

What role do blood vessels play in the cardiovascular system?

They act as a conduit for blood Signup and view all the answers

What is the function of microcirculation?

Facilitating material exchange in tissues Signup and view all the answers

Which of the following is a component of the vascular system?

Arteries Signup and view all the answers

How does the cardiovascular system contribute to homeostasis?

By transporting hormones and regulating body temperature Signup and view all the answers

What type of circulation occurs in the aorta?

Closed system Signup and view all the answers

What is the normal duration of the P-R interval?

0.12 - 0.21 sec Signup and view all the answers

What does the S-T segment indicate?

Beginning of ventricular repolarization Signup and view all the answers

Which condition is characterized by an irregular contraction that does not effectively propel blood?

Fibrillation Signup and view all the answers

What is the primary purpose of the P-R segment?

Allowing time for ventricular filling Signup and view all the answers

How is the heart rate calculated from the R-R interval?

Heart Rate = 60/R-R interval Signup and view all the answers

What is the main cause of cardiac dysrhythmia?

Impulse initiation or propagation disturbances Signup and view all the answers

Which structure within myocardial cells stores calcium ions?

Sarcoplasmic reticulum Signup and view all the answers

What is the duration of the Q-T interval?

From the onset of the QRS complex to the end of the T wave Signup and view all the answers

What volume is represented by the difference between Ventricular End Diastolic Volume (VEDV) and Ventricular End Systolic Volume (VESV)?

Stroke Volume Signup and view all the answers

During which phase does the aortic valve open and blood is rapidly ejected from the ventricle?

Ventricular ejection Signup and view all the answers

What occurs during the isovolumic relaxation phase in the cardiac cycle?

The aortic valve is closed. Signup and view all the answers

What is calculated as the amount of blood pumped from the ventricle per minute?

Cardiac Output Signup and view all the answers

What equation correctly represents the Flow Rate in hemodynamics?

Q = V x A Signup and view all the answers

In terms of blood flow velocity, which vessel experiences the fastest flow?

Aorta Signup and view all the answers

What is the primary purpose of the slow blood flow in capillaries?

Allow time for adequate diffusion Signup and view all the answers

Which component is NOT a measure of cardiac function?

Flow Rate Signup and view all the answers

What is the correct order of blood flow through the cardiovascular system?

Left heart → systemic circulation → right heart → pulmonary circulation → left heart Signup and view all the answers

Which of the following best describes systemic circulation?

Begins in the left ventricle and ends in the right atrium Signup and view all the answers

What type of flow allows each organ to receive fully oxygenated blood independently?

Parallel flow Signup and view all the answers

Which statement about heart valves is correct?

They operate as one-way flaps that prevent backflow Signup and view all the answers

What are the two types of atrioventricular valves in the heart?

Tricuspid and bicuspid (mitral) valves Signup and view all the answers

Which layer of the heart is responsible for its contraction?

Myocardium Signup and view all the answers

What is the normal blood pressure in the systemic circulation?

120/80 mmHg Signup and view all the answers

Which type of circulation operates at a pressure of approximately 25/8 mmHg?

Pulmonary circulation Signup and view all the answers

What does the fibrous pericardium do?

It provides a protective external layer for the heart Signup and view all the answers

What is the main function of coronary vessels?

To provide nutritional support to the heart muscle Signup and view all the answers

Which substance is classified as a vasodilator?

Nitric oxide Signup and view all the answers

What characterizes active hyperemia?

Blood flow proportional to metabolic activity Signup and view all the answers

Which of the following does NOT induce vasorelaxation?

Norepinephrine Signup and view all the answers

What happens during reactive hyperemia?

Increased flow post-occlusion exceeding baseline Signup and view all the answers

Which factor primarily influences sympathetic vasoconstriction?

Norepinephrine Signup and view all the answers

Which metabolic change would likely cause arteriolar dilation?

Increased CO2 levels Signup and view all the answers

What role does epinephrine play in blood flow regulation?

It acts on receptors to either increase cardiac output or relax vascular muscle Signup and view all the answers

Which statement about the parasympathetic influence on blood flow is true?

It is not actively involved in controlling blood flow Signup and view all the answers

Cardiovascular System Quiz

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Questions and Answers

What is the primary function of the cardiovascular system?

Who is credited with the discovery of blood circulation?

Which part of the heart receives deoxygenated blood?

What role do blood vessels play in the cardiovascular system?

What is the function of microcirculation?

Which of the following is a component of the vascular system?

How does the cardiovascular system contribute to homeostasis?

What type of circulation occurs in the aorta?

What is the normal duration of the P-R interval?

What does the S-T segment indicate?

Which condition is characterized by an irregular contraction that does not effectively propel blood?

What is the primary purpose of the P-R segment?

How is the heart rate calculated from the R-R interval?

What is the main cause of cardiac dysrhythmia?

Which structure within myocardial cells stores calcium ions?

What is the duration of the Q-T interval?

What volume is represented by the difference between Ventricular End Diastolic Volume (VEDV) and Ventricular End Systolic Volume (VESV)?

During which phase does the aortic valve open and blood is rapidly ejected from the ventricle?

What occurs during the isovolumic relaxation phase in the cardiac cycle?

What is calculated as the amount of blood pumped from the ventricle per minute?

What equation correctly represents the Flow Rate in hemodynamics?

In terms of blood flow velocity, which vessel experiences the fastest flow?

What is the primary purpose of the slow blood flow in capillaries?

Which component is NOT a measure of cardiac function?

What is the correct order of blood flow through the cardiovascular system?

Which of the following best describes systemic circulation?

What type of flow allows each organ to receive fully oxygenated blood independently?

Which statement about heart valves is correct?

What are the two types of atrioventricular valves in the heart?

Which layer of the heart is responsible for its contraction?

What is the normal blood pressure in the systemic circulation?

Which type of circulation operates at a pressure of approximately 25/8 mmHg?

What does the fibrous pericardium do?

What is the main function of coronary vessels?

Which substance is classified as a vasodilator?

What characterizes active hyperemia?

Which of the following does NOT induce vasorelaxation?

What happens during reactive hyperemia?

Which factor primarily influences sympathetic vasoconstriction?

Which metabolic change would likely cause arteriolar dilation?

What role does epinephrine play in blood flow regulation?

Which statement about the parasympathetic influence on blood flow is true?

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