Question

Is human blood yellow?

Answer 1

Blood:

1. Blood is a red colored fluid connective tissue that consists of plasma, blood cells and platelets.
2. It circulates throughout our body delivering oxygen and nutrients to various cells and tissues.
3. An average adult possesses around 5-6 liters of blood.

Components of blood:

Plasma:

1. Plasma can be defined as an extracellular and liquid portion of blood, which is transparent and pale yellow or straw-colored.
2. It is mainly composed of clotting factors and other protein molecules.
3. Overall, plasma constitutes 50 to 55 per cent of total blood volume.

Red blood cells (Erythrocytes)

1. RBCs are biconcave cells without nucleus in humans also known as erythrocytes.
2. RBCs contain the iron-rich protein called hemoglobin give blood its red color.
3. Their main function is to transport oxygen from and to various tissues and organs

White blood cells (Leucocytes)

1. Leucocytes are colourless blood cells.
2. They are colourless because they are devoid of haemoglobin.