CH 7 SUM: Transport systems in animals

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Which phase of the cardiac cycle involves the contraction of the atria?

Pulmonary Systole

Diastole (General Relaxation)

Atrial Systole (correct)

Ventricular Systole

What is the duration of Atrial Systole in the cardiac cycle?

0.5 seconds

0.1 seconds (correct)

0.3 seconds

0.4 seconds

Which valves open during Atrial Systole to allow blood into the ventricles?

Mitral and Pulmonary valves

Bicuspid and Pulmonary valves

Tricuspid and Bicuspid valves (correct)

Tricuspid and Aortic valves

Which phase of the cardiac cycle involves the contraction of the ventricles?

Ventricular Systole Signup and view all the answers

What is the duration of Ventricular Systole in the cardiac cycle?

0.3 seconds Signup and view all the answers

Which valves close during Ventricular Systole to prevent backflow of blood?

Tricuspid and Bicuspid valves Signup and view all the answers

Which phase of the cardiac cycle involves the relaxation of both atria and ventricles?

Diastole (General Relaxation) Signup and view all the answers

Which part of the heart does oxygenated blood return to?

Left atrium Signup and view all the answers

What primarily controls the heartbeat?

SA node Signup and view all the answers

Which of the following factors does NOT influence the heartbeat?

Blood glucose levels Signup and view all the answers

What stimulates the right atrium to beat faster during physical activities?

Activation of stretch receptors Signup and view all the answers

What triggers an increase in heart rate during exercise?

Increased CO2 levels Signup and view all the answers

What is the main benefit of regular exercise for cardiovascular health?

Prevention of cardiovascular diseases Signup and view all the answers

What is a common cardiovascular disease that can be managed with lifestyle adjustments?

High blood pressure Signup and view all the answers

What is the final destination of oxygenated blood from the left ventricle?

Aorta Signup and view all the answers

What is the main function of the SA node in the cardiac cycle?

To generate electrical impulses that cause the atria to contract Signup and view all the answers

What prevents the backflow of blood during Ventricular Systole?

The closing of the tricuspid and bicuspid valves Signup and view all the answers

What is the duration of Diastole in the cardiac cycle?

0.4 seconds Signup and view all the answers

What is the final destination of deoxygenated blood from the right ventricle?

The lungs via the pulmonary arteries Signup and view all the answers

What is the main benefit of regular exercise for cardiovascular health?

It strengthens the heart muscles and improves efficiency Signup and view all the answers

What primarily controls the heartbeat?

The SA node Signup and view all the answers

Which valves open during Diastole to allow blood to fill the atria?

The semilunar valves Signup and view all the answers

What process raises CO2 levels in the blood during physical activities?

Increased cellular respiration Signup and view all the answers

Which part of the body is responsible for signaling the heart to increase its contraction rate in response to heightened demand for oxygen?

Carotid arteries and aorta Signup and view all the answers

What effect does physical expansion of the right atrium have on the heartbeat during physical activities?

Increases heart rate Signup and view all the answers

Which of the following is NOT a factor that influences the heartbeat?

Blood glucose levels Signup and view all the answers

What causes the right atrium to beat faster during physical activities?

Higher CO2 levels in the blood Signup and view all the answers

Which of the following is NOT a common cardiovascular disease that can be managed with lifestyle adjustments?

Pneumonia Signup and view all the answers

What is the primary function of the SA node in the heart?

Acts as the natural pacemaker of the heart Signup and view all the answers

What happens during Ventricular Systole in the cardiac cycle?

Contraction of the ventricles Signup and view all the answers

What is the role of the SA node in the cardiac cycle?

It generates an electrical impulse for atrial contraction Signup and view all the answers

During which phase of the cardiac cycle do the tricuspid and bicuspid valves close?

Ventricular Systole Signup and view all the answers

What happens as a result of the contraction during Atrial Systole?

Blood is pushed into the ventricles Signup and view all the answers

Where does blood primarily fill from during Diastole in the cardiac cycle?

From the superior and inferior vena cava Signup and view all the answers

What is the function of the semilunar valves during Diastole?

To prevent backflow of blood into the atria Signup and view all the answers

Where does blood move after leaving the right ventricle in the cardiac cycle?

To the lungs for oxygenation Signup and view all the answers

What initiates the contraction of the ventricles during Ventricular Systole in the cardiac cycle?

AV node impulse traveling to atria Signup and view all the answers

Which of the following is a mechanism by which physical activities accelerate the heartbeat besides increasing CO2 levels?

Physical expansion of the right atrium Signup and view all the answers

Which of the following is NOT a cardiovascular disease that can be managed or prevented through lifestyle adjustments and medical interventions?

Congenital heart defects Signup and view all the answers

Which of the following does NOT describe the role of the SA node in the heart?

Controls the contraction of the ventricles Signup and view all the answers

Which of the following is NOT a factor that can influence the rate and rhythm of the heartbeat?

Blood glucose levels Signup and view all the answers

Which of the following is NOT a common misconception about cardiovascular health management?

Cardiovascular diseases can be managed through lifestyle adjustments and medical interventions Signup and view all the answers

Which of the following is NOT a phase in the cardiac cycle?

Ventricular Diastole Signup and view all the answers

Which of the following is NOT a mechanism by which increased cellular respiration raises CO2 levels in the blood during physical activities?

Decreased removal of CO2 by the lungs Signup and view all the answers

Which of the following is NOT a receptor that can be stimulated to signal the heart to increase its contraction rate?

Thermoreceptors in the skin Signup and view all the answers

CH 7 SUM: Transport systems in animals

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Questions and Answers

Which phase of the cardiac cycle involves the contraction of the atria?

What is the duration of Atrial Systole in the cardiac cycle?

Which valves open during Atrial Systole to allow blood into the ventricles?

Which phase of the cardiac cycle involves the contraction of the ventricles?

What is the duration of Ventricular Systole in the cardiac cycle?

Which valves close during Ventricular Systole to prevent backflow of blood?

Which phase of the cardiac cycle involves the relaxation of both atria and ventricles?

Which part of the heart does oxygenated blood return to?

What primarily controls the heartbeat?

Which of the following factors does NOT influence the heartbeat?

What stimulates the right atrium to beat faster during physical activities?

What triggers an increase in heart rate during exercise?

What is the main benefit of regular exercise for cardiovascular health?

What is a common cardiovascular disease that can be managed with lifestyle adjustments?

What is the final destination of oxygenated blood from the left ventricle?

What is the main function of the SA node in the cardiac cycle?

What prevents the backflow of blood during Ventricular Systole?

What is the duration of Diastole in the cardiac cycle?

What is the final destination of deoxygenated blood from the right ventricle?

What is the main benefit of regular exercise for cardiovascular health?

What primarily controls the heartbeat?

Which valves open during Diastole to allow blood to fill the atria?

What process raises CO2 levels in the blood during physical activities?

Which part of the body is responsible for signaling the heart to increase its contraction rate in response to heightened demand for oxygen?

What effect does physical expansion of the right atrium have on the heartbeat during physical activities?

Which of the following is NOT a factor that influences the heartbeat?

What causes the right atrium to beat faster during physical activities?

Which of the following is NOT a common cardiovascular disease that can be managed with lifestyle adjustments?

What is the primary function of the SA node in the heart?

What happens during Ventricular Systole in the cardiac cycle?

What is the role of the SA node in the cardiac cycle?

During which phase of the cardiac cycle do the tricuspid and bicuspid valves close?

What happens as a result of the contraction during Atrial Systole?

Where does blood primarily fill from during Diastole in the cardiac cycle?

What is the function of the semilunar valves during Diastole?

Where does blood move after leaving the right ventricle in the cardiac cycle?

What initiates the contraction of the ventricles during Ventricular Systole in the cardiac cycle?

Which of the following is a mechanism by which physical activities accelerate the heartbeat besides increasing CO2 levels?

Which of the following is NOT a cardiovascular disease that can be managed or prevented through lifestyle adjustments and medical interventions?

Which of the following does NOT describe the role of the SA node in the heart?

Which of the following is NOT a factor that can influence the rate and rhythm of the heartbeat?

Which of the following is NOT a common misconception about cardiovascular health management?

Which of the following is NOT a phase in the cardiac cycle?

Which of the following is NOT a mechanism by which increased cellular respiration raises CO2 levels in the blood during physical activities?

Which of the following is NOT a receptor that can be stimulated to signal the heart to increase its contraction rate?

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