What Is Blood?

The video explores the diversity of blood colors across species, explaining that blood can be red, blue, green, or clear depending on its components. It delves into the composition of blood, highlighting the roles of plasma, red blood cells, white blood cells, and platelets. Plasma, primarily water, transports nutrients and heat, while red blood cells, containing hemoglobin, carry oxygen. White blood cells defend against pathogens, and platelets aid in clotting. The video concludes by emphasizing that blood color is determined by the proteins present in red blood cells.

What is the significance of plasma in blood?

Explain the function of platelets in the blood.