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Body Fluids and Circulation · Question 27

NEET 2016 (Phase 1)MCQMedium📈 Topic in 12% papers+4−1
1

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.

Answer

(1) more than that in the pulmonary vein

Solution

Blood pressure falls continuously as blood flows from arteries through capillaries to veins.

⇒ The pulmonary artery receives blood directly from the right ventricle, whereas the pulmonary vein carries blood from the lung capillaries back to the left atrium.

∴ Pressure in pulmonary artery > pressure in pulmonary vein.

∵ The right ventricle pumps only to the lungs (pulmonary circulation), its pressure is less than that in the aorta and carotid (systemic circulation), but still more than that in the venae cavae.

Answer: (1)

NEET 2016 (Phase 1)

Keep practising — Body Fluids and Circulation

2

Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.

  1. Erythrocytes
  2. Leucocytes
  3. Neutrophils
  4. Thrombocytes
NEET 2016 (Phase 2)
3

Serum differs from blood in

  1. lacking globulins
  2. lacking albumins
  3. lacking clotting factors
  4. lacking antibodies.
NEET 2016 (Phase 2)
4

Which one of the following animals has two separate circulatory pathways?

  1. Whale
  2. Shark
  3. Frog
  4. Lizard
AIPMT 2015
5

Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when

  1. AV node receives signal from SA node
  2. AV valves open up
  3. Ventricular walls vibrate due to gushing in of blood from atria
  4. Semilunar valves close down after the blood flows into vessels from ventricles.
AIPMT 2015
6

If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence ?

  1. Fibrinogen in plasma
  2. Haemocytes
  3. Serum albumins
  4. Serum globulins
AIPMT 2015
7

Erythropoiesis starts in

  1. spleen
  2. red bone marrow
  3. kidney
  4. liver
AIPMT 2015 (Cancelled)
8

Which one of the following is correct?

  1. Lymph = Plasma + RBC + WBC
  2. Blood = plasma + RBC + WBC + Platelets
  3. Plasma = Blood - Lymphocytes
  4. Serum = Blood + Fibrinogen
AIPMT 2015 (Cancelled)
9

Blood pressure in the mammalian aorta is maximum during

  1. systole of the left ventricle
  2. diastole of the right atrium
  3. systole of the left atrium
  4. diastole of the right ventricle.
AIPMT 2015 (Cancelled)
10

Person with blood group AB is considered as universal recipient because he has

  1. both A and B antigens on RBC but no antibodies in the plasma
  2. both A and B antibodies in the plasma
  3. no antigen on RBC and no antibody in the plasma
  4. both A and B antigens in the plasma but no antibodies.
AIPMT 2014
11

How do parasympathetic neural signals affect the working of the heart?

  1. Reduce both heart rate and cardiac output.
  2. Heart rate is increased without affecting the cardiac output.
  3. Both heart rate and cardiac output increase.
  4. Heart rate decreases but cardiac output increases.
AIPMT 2014

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