NEET BIOLOGY

HUMAN PHYSIOLOGY

BODY FLUIDS AND CIRCULATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Plasma is a straw coloured, viscous fluid constituting nearly ____ % of blood-
A
55
B
45
C
90
D
10
Explanation: 

Detailed explanation-1: -Plasma is a straw coloured, viscous fluid constituting of nearly 55% of the blood, 90-92% of plasma is water and proteins contributes approx 6-8%. The plasma proteins contain fibrinogen, globulins and albumins.

Detailed explanation-2: -Normally, blood is 55 percent plasma and 45 percent blood cells and other material. Plasma is 92 percent water.

Detailed explanation-3: -Plasma is a Newtonian fluid, its viscosity does not depend on flow characteristics, therefore it is simple to measure, especially in capillary viscosimeters. Its normal value is 1.10-1.30 mPa s at 37 degrees C and independent of age and gender.

Detailed explanation-4: -The straw-colored fluid is called plasma and forms about 60% of blood, it does not contain the cellular components however it contains proteins and dissolved substances.

Detailed explanation-5: -Plasma is a straw coloured, viscous fluid constituting nearly 55 per cent of the blood. 90-92 per cent of plasma is water and proteins contribute 6-8 per cent of it.

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