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Body Fluids and Circulation · Question 13

NEET (UG) 2022MCQEasy📈 Topic in 50% papers+4−1
1

Given below are two statements: In the light of the above statements, choose the most appropriate answer from the options given below:

  1. Both Statement I and Statement II are correct
  2. Both Statement I and Statement II are incorrect
  3. Statement I is correct but Statement II is incorrect
  4. Statement I is incorrect but Statement II is correct

Answer

(4) Statement I is incorrect but Statement II is correct

Solution

As per NCERT, the coagulum (clot) is formed mainly of a network of threads called fibrins, in which dead and damaged formed elements of blood are trapped.

Thrombin is the enzyme that converts inactive fibrinogens into fibrins; it is not the thread itself.

Statement I is incorrect.

As per NCERT, the spleen is a large bean-shaped organ that acts as a filter of blood and a reservoir of erythrocytes; worn-out RBCs (life span about 120 days) are destroyed in the spleen, so it is called the graveyard of RBCs.

Statement II is correct.

Answer: (4)

NEET (UG) 2022

Keep practising — Body Fluids and Circulation

2

Which one of the following statements is correct?

  1. The atrio-ventricular node (AVN) generates an action potential to stimulate atrial contraction
  2. The tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria
  3. Blood moves freely from atrium to the ventricle during joint diastole.
  4. Increased ventricular pressure causes closing of the semilunar valves.
NEET (UG) 2022
3

A unique vascular connection between the digestive tract and liver is called.

  1. Hepato-cystic system
  2. Hepato-pancreatic system
  3. Hepatic portal system
  4. Renal portal system
NEET (UG) 2022 (Phase 2)
4

Arrange the following formed elements in the decreasing order of their abundance in blood in humans: Choose the most appropriate answer from the options given below:

  1. A, C, B, D, E
  2. C, A, B, E, D
  3. C, B, A, E, D
  4. D, E, B, A, C
NEET (UG) 2022 (Phase 2)
5

Persons with 'AB' blood group are called as "Universal recipients". This is due to :

  1. Absence of antibodies, anti-A and anti-B, in plasma
  2. Absence of antigens A and B on the surface of RBCs
  3. Absence of antigens A and B in plasma
  4. Presence of antibodies, anti-A and anti-B, on RBCs
NEET (UG) 2021
6

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

  1. Thrombokinase
  2. Thrombin
  3. Renin
  4. Epinephrine
NEET (UG) 2021
7

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)
NEET (UG) 2020
8

The QRS complex in a standard ECG represents

  1. Repolarisation of ventricles
  2. Repolarisation of auricles
  3. Depolarisation of auricles
  4. Depolarisation of ventricles
NEET (UG) 2020
9

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)
NEET (UG) 2019
10

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
NEET (UG) 2019
11

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)
NEET 2018

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