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Body Fluids and Circulation · Question 50

AIPMT 2010 (Mains)MCQEasy📈 Topic in 25% papers+4−1
1

Fastest distribution of some injectable material/medicine and with no risk of any kind can be achieved by injecting it into the

  1. muscles
  2. arteries
  3. veins
  4. lymph vessels

Answer

(3) veins

Solution

A substance injected into a vein (intravenous injection) is carried directly with venous blood to the heart and is then pumped to all parts of the body through the systemic circulation, so it is distributed fastest.

∵ Absorption from muscles is slow, arterial blood is under high pressure (risk of bleeding and of damage to the organ supplied), and lymph flows very slowly,

∴ the material should be injected into the veins.

Answer: (3)

AIPMT 2010 (Mains)

Keep practising — Body Fluids and Circulation

2

Given below are four statements (i – iv) regarding human blood circulatory system. (i) Arteries are thick-walled and have narrow lumen as compared to veins. (ii) Angina is acute chest pain when the blood circulation to the brain is reduced. (iii) Persons with blood group AB can donate blood to any person with any blood group under ABO system. (iv) Calcium ions play a very important role in blood clotting. Which two of the above statements are correct?

  1. (i) and (iv)
  2. (i) and (ii)
  3. (ii) and (iii)
  4. (iii) and (iv)
AIPMT 2010 (Mains)
3

The haemoglobin content per 100 mL of blood of a normal healthy human adult is

  1. 5–11 g
  2. 25–30 g
  3. 17–20 g
  4. 12–16 g
AIPMT 2010 (Mains)
4

If due to some injury the chordae tendineae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?

  1. The flow of blood into the aorta will be slowed down
  2. The 'pacemaker' will stop working
  3. The blood will tend to flow back into the left atrium
  4. The flow of blood into the pulmonary artery will be reduced
AIPMT 2010 (Prelims)
5

There is no DNA in

  1. mature RBCs
  2. a mature spermatozoan
  3. hair root
  4. an enucleated ovum.
AIPMT 2009
6

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

  1. S - start of systole
  2. T - end of diastole
  3. P - depolarisation of the atria
  4. R - repolarisation of ventricles
AIPMT 2009
7

Globulins contained in human blood plasma are primarily involved in

  1. osmotic balance of body fluids
  2. oxygen transport in the blood
  3. clotting of blood
  4. defence mechanisms of body.
AIPMT 2009
8

Compared to blood our lymph has

  1. plasma without proteins
  2. more WBCs and no RBCs
  3. more RBCs and less WBCs
  4. no plasma.
AIPMT 2009
9

In humans, blood passes from the post caval to the diastolic right atrium of heart due to

  1. stimulation of the sino auricular node
  2. pressure difference between the post caval and atrium
  3. pushing open of the venous valves
  4. suction pull
AIPMT 2008
10

The most active phagocytic white blood cells are

  1. eosinophils and lymphocytes
  2. neutrophils and monocytes
  3. neutrophils and eosinophils
  4. lymphocytes and macrophages
AIPMT 2008
11

Which type of white blood cells are connected with the release of histamine and the natural anticoagulant heparin?

  1. Eosinophils
  2. Monocytes
  3. Neutrophils
  4. Basophils
AIPMT 2008

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