The Pulse

Differentiate between lub and dub sound.

The stretching and relaxing of arteries with each heartbeat felt as heart throbbing is called __________.

Differentiate between heart rate and pulse rate.

Can anxiety lead to high blood pressure?

1. Peak P and peak R together - Systolic and diastolic blood pressures
2. Complex QRS - one complete pulse
3. Peak T - Initiation of total cardiac contraction
4. Peak P - initiation of left atrial contraction only

Pulse is measured from

1. artery

2. Vein

3. Capillary

4. Nerve

The sound that the mitral valve makes is:

Which of the component of an ECG is correctly matched below ?

1. Peak P and R together - systolic and diastolic blood pressures

2. QRS - one complete pulse

3. Peak P - initiation of left atrial contraction only.

4. Peak T - initiation of total cardiac contraction

The “lub” sound (first heart sound) is caused by the

1. Filling of the ventricles

2. Ventricular contraction

3. Closing of the av valves

4. Closing of semilunar valves

1. Q S R P
2. P Q R S
3. S R Q P
4. S R P Q

A normal ECG has the readings as ;

1. 1. Repolarization, 2. Q, 3.R, 4. Repolarization, 5.Depolarization

2. 1.Depolarization, 2. R, 3.Q, 4. Repolarization, 5. Repolarization

3. 1.Depolarization, 2. Q, 3. R, 4.Depolarization, 5. Repolarization

4. 1. Repolarization, 2.Q, 3. R, 4. Depolarization, 5. Depolarization

Stroke volume is the amount of blood the left ventricle pumps out in one cardiac cycle. This is around 70ml. Now, to get the cardiac output, we have to multiply (i)__ with the normal heart rate of (ii)__ /min and we get (iii)__ ml/min. This means that in one minute, each ventricle of a normal heart pumps about (iv)__ litres of blood out.

1. (i) Stroke volume, (ii) 72, (iii) 5, 040, (iv) 5

2. (i) Volume of the heart, (ii) 72, (iii)3, 720, (iv) 3

3. (i) Total volume, (ii) 82, (iii)8, 200, (iv) 8

4. (i) Volume of the ventricles, (ii) 72, (iii)2, 600, (iv) 2

The 3 variables which measure the efficiency of cardiac cycle and the heart’s pumping activity are _______.

1. Blood pressure, pulse, cardiac output.

2. Systole, diastole, stroke volume.

3. Isovolumetric contraction, isovolumetric relaxation, ejection.

4. Sinoatrial node, bundle of his, atrioventricular node.

Which of the following is not correctly matched?

1. Systemic circulation - generates efficient waveforms

2. Tachycardia - Heart rate is 70-75 beats

3. Bradycardia - Heart rate falls below 60 beats

4. Atrial fibrillation - generates inefficient waveforms

ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.

1. Depolarisation of ventricles

2. Depolarisation of atria

3. Repolarisation of atria

4. Repolarisation of ventricles

Athletes trained for endurance, such as swimmers and marathon runners, have a higher stroke volume at rest mainly because they have

1. Resting bradycardia

2. More sympathetic stimulation from the SA node

3. Increased heart rate

4. Decreased end-diastolic volume

1. pulse
2. heartbeat
3. blood pressure

The “lub” sound (first heart sound) is caused by the

1. Filling of the ventricles

2. Ventricular contraction

3. Closing of the av valves

4. Closing of semilunar valves