Match each description to the correct heart sound

Sound made when AV valves close

Sound made when SL valves close

What are the two main phases of the cardiac cycle?

Depolarization and Repolarization

What causes the semilunar valves to open?

Ventricular pressure exceeds aortic/pulmonary pressure

Atrial pressure exceeds ventricular pressure

Aortic pressure exceeds ventricular pressure

Ventricular pressure falls below atrial pressure

When do the AV valves open during the cardiac cycle?

When atrial pressure exceeds ventricular pressure

When ventricular pressure exceeds aortic pressure

When ventricular pressure exceeds atrial pressure

When aortic pressure exceeds ventricular pressure

What happens during ventricular filling?

Blood flows passively into the ventricles

Atria contract to push blood into ventricles

Blood is ejected from the ventricles

Ventricles contract without changing volume

What is the role of atrial contraction in ventricular filling?

It only contributes a small fraction to ventricular filling

It accounts for most of the ventricular filling

Match the following part of an EKG to what events occur

The atrium is relaxing and the ventricles are contracting

What is the primary difference between sinus bradycardia and normal sinus rhythm?

The heart rate is slower in sinus bradycardia.

The P wave is absent in sinus bradycardia.

The QRS complex is wider in sinus bradycardia.

The heart rate is faster in sinus bradycardia.

Why is it crucial to act quickly when ventricular dysrhythmias are detected?

They are deadly and require immediate intervention.

They cause premature atrial contractions.

What is a key characteristic of ventricular fibrillation?

Quivering ventricles with no pulse

What is the immediate action required when ventricular tachycardia is observed?

Check the patient's pulse and start CPR if absent

Perform a synchronized cardioversion

Administer calcium channel blockers

In supraventricular tachycardia, why are P waves often not visible?

They are obscured by a wavy baseline.

They are replaced by a sawtooth pattern.

They are absent due to a wide QRS complex.

What is Cardiac Output?

Cardiac output is the volume of blood pumped by the heart per minute.

Cardiac output is the amount of oxygen consumed by the body.

Cardiac output refers to the heart's electrical activity.

Cardiac output is the pressure exerted by blood on the walls of the arteries.

What 2 factors affect cardiac output?

Blood pressure and respiratory rate

Cholesterol levels and body temperature

Oxygen saturation and blood volume

Diagnostics of the Circulatory System Lesson

76 questions

Show all answers

1.

SLIDE QUESTION

30 sec • Ungraded

2.

SLIDE QUESTION

30 sec • Ungraded

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When a part of the heart contracts, it is in _______________

systole

contraction

relaxation

diastole

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When a part of the heart relaxes, it is in _______________

systole

contraction

relaxation

diastole

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When an atria contracts, this is called?

Atrial systole

Atrial contraction

Ventricular systole

Atrial diastole

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When a ventricle contracts, this is called?

Atrial systole

Atrial contraction

Ventricular systole

Atrial diastole

7.

SLIDE QUESTION

30 sec • Ungraded

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