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Blood: Characteristics and Functions

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Questions and Answers

What is the main function of plasma proteins in the blood?

Transport respiratory gases

Help maintain blood pH within normal range

Act as a barrier against pathogens

Contribute to osmotic pressure and serve as blood buffer (correct)

Which part of the blood is composed mainly of water and serves as a transport medium for nutrients and waste products?

White blood cells

Platelets

Red blood cells

Plasma (correct)

Why do the formed elements composed of living cells settle at the bottom after centrifugation?

They are heavier than other components due to the presence of plasma proteins.

They are denser than the yellow liquid above them. (correct)

They are lighter than the plasma due to being mostly water and solutes.

They have a higher water content compared to other components.

Which component of blood helps protect the body from pathogens?

Antibodies Signup and view all the answers

What is the primary role of albumin in blood?

Contributes to osmotic pressure and acts as a blood buffer Signup and view all the answers

Why does the composition of blood vary as cells exchange substances with it?

To adjust protein levels based on metabolic demands Signup and view all the answers

What is the pH of blood?

7.35-7.45 Signup and view all the answers

Which component of blood is responsible for carrying oxygen?

Erythrocytes Signup and view all the answers

What is the approximate volume of blood in a healthy adult?

5-6 liters Signup and view all the answers

Where do erythrocytes settle when blood is separated into its components?

At the bottom Signup and view all the answers

Which part of blood is termed as the only fluid tissue in the human body?

Plasma Signup and view all the answers

What is the normal range for blood temperature?

37oC - 38oC Signup and view all the answers