Cardiac Cycle and Heart Conditions

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What is systole in the cardiac cycle?

Systole is the phase of the cardiac cycle when the heart muscle contracts, pumping blood from the chambers into the arteries.

How does diastole differ from systole?

Diastole is the phase of the cardiac cycle when the heart muscle relaxes, allowing the chambers to fill with blood.

What are the main goals of systole and diastole?

The main goal of systole is to push blood out of the heart, while diastole aims to fill the heart with blood.

Which valves open during systole?

During systole, the aortic and pulmonary valves open to allow blood to flow from the heart to the body and lungs.

Which heart sounds are associated with systole and diastole?

The 'lub' sound corresponds to the beginning of systole, while the 'dub' sound corresponds to the end of systole and the start of diastole.

What is cardiac arrest?

Cardiac arrest is a sudden loss of heart function, resulting in the cessation of normal blood circulation.

How does cardiac arrest differ from a heart attack?

Cardiac arrest is an electrical malfunction of the heart leading to a stop in blood flow, whereas a heart attack is a blockage of blood flow to a part of the heart muscle.

What is a heart attack, medically termed as?

A heart attack is medically termed as a myocardial infarction.

What are common symptoms of a heart attack?

Common symptoms include chest pain, shortness of breath, nausea, and discomfort in other areas of the upper body.

What immediate action should be taken if someone is in cardiac arrest?

Immediate CPR and use of an automated external defibrillator (AED) should be performed, and emergency services should be contacted.

Can diastolic or systolic dysfunction lead to heart conditions?

Yes, dysfunction in either systole or diastole can contribute to heart failure or other cardiac conditions.

What happens to blood pressure during systole?

Blood pressure rises during systole due to the contraction of the heart pumping blood into the arteries.

What might an abnormal diastolic phase indicate?

An abnormal diastolic phase may indicate issues like diastolic heart failure, where the heart doesn't relax properly.

Why is timely intervention important in a heart attack?

Timely intervention can restore blood flow, limit damage to the heart muscle, and increase survival rates.

How can lifestyle changes impact one's risk for heart attacks?

Healthy lifestyle changes like diet, exercise, and smoking cessation can significantly reduce the risk of heart attacks.




Test Your Knowledge

Select the correct option


1. Which phase of the cardiac cycle involves the heart muscle contracting to pump blood into the arteries?

Systole

Diastole

Cardiac arrest

Heart attack

2. What is the primary goal of the diastole phase in the cardiac cycle?

Push blood out of the heart

Fill the heart with blood

Contract the heart muscle

Relax the heart muscle

3. What sound is associated with the beginning of systole in the cardiac cycle?

Lub sound

Dub sound

Murmur

Gurgle

4. Which immediate actions should be taken for someone in cardiac arrest?

Perform CPR and use an AED, call emergency services

Offer a drink of water and keep them calm

Perform abdominal thrusts

Wait for professional medical help

5. How does cardiac arrest fundamentally differ from a heart attack?

Both involve electrical malfunctions of the heart

Both result from a blockage causing reduced blood flow

Cardiac arrest is electrical failure; a heart attack is blockage of blood flow

A heart attack is less severe compared to cardiac arrest

6. What happens to blood pressure during the systole phase?

Blood pressure stays the same

Blood pressure rises

Blood pressure drops significantly

Blood pressure becomes unpredictable

7. What medical term is used to describe a heart attack?

Cardiac arrest

Myocardial infarction

Angina

Arrhythmia

8. Why is timely medical intervention crucial during a heart attack?

To increase cholesterol levels

To restore blood flow and limit heart muscle damage

To increase the chances of cardiac arrest

To immediately stop heart functions

9. Which valves of the heart open during systole?

Mitral and tricuspid valves

Aortic and pulmonary valves

All heart valves remain closed

No specific valves are involved

10. How can lifestyle changes impact heart attack risks?

Significant reduction in risk through healthy changes

It has minimal impact; heart risks are predetermined

It only affects cholesterol, not heart attacks

Increases risks due to higher activity levels