Blood Tissue Function and Structure Quiz

Functions of Blood Tissue

• The main function of blood tissue is to transport oxygen and nutrients to cells and remove waste products.

Composition of Blood Tissue

• The plasma in blood tissue mainly consists of water and plasma proteins.
• Plasma proteins mainly consist of albumins and globulins.
• The plasma represents approximately 55% of the total blood volume.
• The formed elements (red blood cells, white blood cells, and platelets) represent approximately 45% of the total blood volume.

Plasma Components

• Apart from water and plasma proteins, the plasma contains nutrients, hormones, gases, waste products, and electrolytes.
• Fibrinogen, a protein involved in blood clotting, is also present in the plasma.

Functions of Plasma Proteins

• The main function of plasma proteins is to regulate blood viscosity and maintain blood pressure.
• Albumins and globulins contribute to the viscosity of blood.

Functions of Blood Cells

• The main function of red blood cells (RBCs) is to carry oxygen from lungs to tissues.
• RBCs are highly differentiated, biconcave disc-shaped cells that lack a nucleus and organelles.
• The main function of platelets is to participate in blood clotting.
• Leucocytes exert their functions in the tissues, where they help fight infections.

Other Key Facts

• Serum contains all the components of plasma except fibrin and proteins involved in coagulation.
• The main constituent of Red Blood Cells' cytoplasm is hemoglobin.
• A hemogram consists of counting the number of red blood cells, white blood cells, and platelets in a sample of blood.
• The normal range for white blood cells count per mm3 of blood is 4,500-11,000.