Body Fluids and Circulation

Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?

1. Thrombokinase
2. Thrombin
3. Renin
4. Epinephrine

Match the following columns and select the correct option.

1. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
2. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
3. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
4. (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)

The QRS complex in a standard ECG represents

1. Repolarisation of ventricles
2. Repolarisation of auricles
3. Depolarisation of auricles
4. Depolarisation of ventricles

Match the Column-I with Column-II : Select the correct option.

1. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
2. (a)-(iv), (b)-(i), (c)-(ii), (d)-(v)
3. (a)-(ii), (b)-(i), (c)-(v), (d)-(iii)
4. (a)-(ii), (b)-(iii), (c)-(v), (d)-(iv)

What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?

1. 100 beats per minute
2. 125 beats per minute
3. 50 beats per minute
4. 75 beats per minute

Match the items given in column I with those in column II and select the correct option given below.

1. (a)-(i), (b)-(ii), (c)-(iii)
2. (a)-(iii), (b)-(i), (c)-(ii)
3. (a)-(i), (b)-(iii), (c)-(ii)
4. (a)-(ii), (b)-(i), (c)-(iii)

Match the items given in column I with those in column II and select the correct option given below.

1. (a)-(i), (b)-(iii), (c)-(ii)
2. (a)-(iii), (b)-(ii), (c)-(i)
3. (a)-(ii), (b)-(iii), (c)-(i)
4. (a)-(i), (b)-(ii), (c)-(iii)

Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature?

1. A only
2. A, C and D only
3. B and C only
4. D only

The hepatic portal vein drains blood to liver from

1. stomach
2. kidneys
3. intestine
4. heart.

Blood pressure in the pulmonary artery is

1. more than that in the pulmonary vein
2. less than that in the venae cavae
3. same as that in the aorta
4. more than that in the carotid.