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Body Fluids and Circulation · Question 25

NEET 2017MCQEasy📈 Topic in 38% papers+4−1
1

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

Answer

(4) D only

Solution

Mature mammalian RBCs lack a nucleus and most organelles. As per NCERT, RBCs are rich in haemoglobin, and the absence of a nucleus leaves the entire internal space for haemoglobin ⇒ more oxygen can be carried (D is correct).

A: Not needing to reproduce is not the reason for losing the nucleus.

B: Being somatic cells does not explain it; most somatic cells are nucleated.

C: RBCs do metabolise (they respire anaerobically by glycolysis).

Answer: (4)

NEET 2017

Keep practising — Body Fluids and Circulation

2

The hepatic portal vein drains blood to liver from

  1. stomach
  2. kidneys
  3. intestine
  4. heart.
NEET 2017
3

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.
NEET 2016 (Phase 1)
4

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)
5

Serum differs from blood in

  1. lacking globulins
  2. lacking albumins
  3. lacking clotting factors
  4. lacking antibodies.
NEET 2016 (Phase 2)
6

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

  1. Whale
  2. Shark
  3. Frog
  4. Lizard
AIPMT 2015
7

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
8

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
9

Erythropoiesis starts in

  1. spleen
  2. red bone marrow
  3. kidney
  4. liver
AIPMT 2015 (Cancelled)
10

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)
11

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)

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