Cardiac Output

Q.

What is the approximate amount of blood pumped by each ventricle of the heart during one cardiac cycle?

1. 70 ml
2. 100 ml
3. 50 ml
4. 80 ml

Q. How does parasympathetic neural signal affect the working of the heart?

1. Reduce both heart rate and cardiac output
2. Heat rate is increased without affecting the cardiac output
3. Both heart rate and cardiac output increase
4. Heart rate decreases but cardiac output increases

Q. Calculate the cardiac output (ml)of an athlete if the volume of blood pumped by each ventricle per beat is 70 ml and the heart rate is 80 beats per minute.

1. 5040
2. 5400
3. 5600
4. 5800

Q. In humans, the volume of blood pumped out by each ventricle per minute is

1. 3600 mL
2. 5040 mL
3. 2520 mL
4. 9360 mL

Q. Which of the following is associated with decrease in cardiac output?

1. Sympathetic nerves
2. Parasympathetic neural signals
3. Pneumotaxic centre
4. Adrenal medullary hormones

Q.

In a standard ECG, which one of the following alphabets is the correct representation of the respective activity of human heart?

1. R – repolarisation of ventricles

2. P – depolarisation of Atria

3. S – start of systole

4. T – end of diastole

Q. What would be cardiac output of a person having 72 heart beats per minute and a stroke volume of 50 ml?

1. 7200 ml
2. 5000 ml
3. 360 ml
4. 3600 ml

Q. What would be the stroke volume if heart beats for 75 times per minute and cardiac output is 6 litres?

Q.

When is the second sound of cardiac cycle is heard through the stethoscope by a doctor?

1. When AV valves open up.

2. When ventricular walls vibrate due to gushing in blood from atria.

3. When semilunar valves close down after the blood flows down into vessels from ventricles.

4. When AV node receives signal from SA node.

Q. What is the composition of sweat produced by sweat glands?

Q.

What is the function of the hilus? Is the word "hilum" the plural form of "hilus"?

Q.

Which among the following is correct during each cardiac cycle ?
(a) The volume of blood pumped out by the Rt and Lt ventricle is same
(b) The volume of blood pumped out by the Rt and Lt ventricle is different
(c) The volume of blood received by each atrium is different
(d) The volume of blood received by the ariria and pulmonary artery is different

Q. Read the following statements:
(i) During a cardiac cycle, both ventricles pump out approximately $70\text{ml}$ of blood called stroke volume.
(ii) Cardiac output can be defined as volume of blood pumped out by both ventricle per minute.
(iii) Cardiac output of an athlete will be higher than that of an ordinary man.
(iv) During each cardiac cycle two prominent sounds are produced.
How many statements are correct?

1. Two
2. Four
3. Three
4. One

Q.

In a cardiac output of 5250 ml per minute, with 75 heartbeats per minute, what is the stroke volume?

1. 55 ml

2. 60 ml

3. 70 ml

4. 80 ml

Q.

What would be the cardiac output of a person having 72 heart beats per minute and a stroke volume of 50 mL ?

Q. A patient has a cardiac output of 6500 ml per minute and stroke volume of 50 ml. Find his pulse in beats per minute.

1. 92.5
2. 130
3. 72
4. 50.5

Q. Vascular and excretory organs are formed from

1. Mesoderm
2. Mesendoderm
3. Endoderm
4. Ectoderm

Q.

How much blood is pumped as a stroke volume?

Q. In a cardiac output of 5250 ml per minute, with 75 heart beats per minute, the stroke volume is?

1. 60 ml
2. 55 ml
3. 80 ml
4. 70 ml

Q. The volume of blood present in an adult human is_____

1. 1 litre
2. 2 litres
3. 5 litres
4. 10 litres

Q.

What is the relationship between the rate of heart beat and pulse?

Q. Which of the following statements is incorrect?

1. SAN generates 70-75 action potentials per minute
2. Cardiac output is 5 L
3. Cardiac cycle is 0.1 sec long
4. Stroke volume is 70 mL

Q. Which of the following carries blood from the hypothalamus of the brain to the anterior lobe of pituitary?

1. Hepatic portal system
2. None of these
3. Renal portal system
4. Hypophyseal portal system

Q. What is cardiac output

1. Total volume of blood pumped by left ventricle per minute
2. Total volume of blood pumped by right auricle per minute
3. Total volume of blood pumped by left auricle per minute
4. None of the above.

Q.

Cardiac output is defined as

1. heart rate times stroke volume

2. Peripheral resistance times heart rate

3. Blood pressure minus peripheral resistance

4. Blood pressure times peripheral resistance

Q. Choose the correct option.

(i) Human heart is ectodermal in origin.

(ii) Mitral valve guards the opening between right atrium and left ventricle.

(iii) SAN is located on the left upper corner of right atrium

(iv) Stroke volume $\times$ Heart rate = Cardiac output

1. (ii) and (iii) are correct
2. (iv) alone is correct
3. (i) and (ii) are correct
4. (ii) and (iv) are correct
5. (i) alone is correct

Q. Differentiate between cardiac output and stroke volume.

Q.

Match column I with column II regarding the standard ECG of a normal person.
$\begin{array}{cccc}& Column-I& & Column-II\\ \left(a\right)& P-wave& \left(i\right)& Atrialdepolarization\\ \left(b\right)& QRSwave& \left(ii\right)& Ventriculardepolarization\\ \left(c\right)& Twave& \left(iii\right)& Ventricularrepolarisation\end{array}$

1. (a) – (i); (b) – (ii); (c) – (iii)
2. (a) – (ii); (b) – (iii); (c) – (i)
3. (a) – (iii); (b) – (i); (c) – (ii)
4. (a) – (ii); (b) – (i); (c) – (iii)

Q. Read the following statements:
(i) During a cardiac cycle, both ventricles pump out approximately $70\text{ml}$ of blood called stroke volume.
(ii) Cardiac output can be defined as volume of blood pumped out by both ventricle per minute.
(iii) Cardiac output of an athlete will be higher than that of an ordinary man.
(iv) During each cardiac cycle two prominent sounds are produced.
How many statements are correct?

1. Three
2. One
3. Two
4. Four

Q. Define a cardiac cycle and the cardiac output?