Question

Consider the following statements with respect to Blood Plasma :

1. It makes up about one-fifth of the body's total blood volume.

2. It  Supplies critical proteins for blood clotting and immunity.

3. It Helps maintain blood pressure and volume.

Which of the statements given above are correct?

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3 

Answer 1

Correct Answer - Option 2 : 2 and 3 only

The correct answer is 2 and 3 only.

• Blood Plasma :
  • Plasma is the liquid portion of blood.
  • About 55% of our blood is plasma, and the remaining 45% are red blood cells, white blood cells and platelets that are suspended in the plasma. Hence statement 1 is incorrect.
  • Plasma is about 92% water. It also contains 7% vital proteins such as albumin, gamma globulin and anti-hemophilic factor, and 1% mineral salts, sugars, fats, hormones and vitamins. 
  • Plasma serves four important functions in our bodies: 
    • Helps maintain blood pressure and volume. Hence statement 3 is correct.
    • Supply critical proteins for blood clotting and immunity. Hence statement 2 is correct.
    • Carries electrolytes such as sodium and potassium to our muscles. 
    • Helps to maintain a proper pH balance in the body, which supports cell function.   

• Plasma donation - 
  • Plasma from those who recovered from COVID-19 contains antibodies that neutralize coronavirus. 
  • It can be helpful in the treatment of COVID-19 infected patients.
  • In a plasma-only donation, the liquid portion of the donor’s blood is separated from the cells.
  • Blood is drawn from one arm and sent through a high-tech machine that collects the plasma.
  • The donor’s red blood cells and platelets are then returned to the donor along with some saline.
  • The process is safe and only takes a few minutes longer than donating whole blood.