Biological FactsBiology

Facts about Blood

Blood is one of the most important things in life. Almost every animal with a circulatory system has blood. Blood is the life-giving fluid that supplies oxygen to the body’s cells.

It is a special type of connective tissue consisting of red blood cells, platelets and white blood cells suspended in a liquid plasma matrix.

Facts about Blood

These are the basics, but there are also many surprises;

For example, about 8 percent of your body weight is blood and contains a small amount of gold.

What is Blood?

Blood is a liquid component of blood composed of plasma, red blood cells and platelets. It circulates throughout our body, providing oxygen and nutrients to various cells and organs. It makes up 8% of our body weight. An average adult has about 5-6 liters of blood.

Types of Blood Cells
  • Red blood cells (Erythrocytes)
  • White blood cells (Leucocytes)
  • Blood Platelets (Thrombocytes)

Components Of Blood

Blood has many cell structures in its composition. The main components of blood are:

  • Plasma
  • Red blood cells (RBC)
  • White blood cells (WBC)
  • Platelets

Functions of Blood

The blood performs three major functions

  • Transportation
  • Protection
  • Regulation of body temperature
  • Regulation of the pH level of the body.

Interesting Facts about Blood

  1. Blood is the only connective tissue that circulates throughout the body. It also acts as a medium to transport all the essential components such as nutrients, oxygen, electrolytes, proteins, glucose hormones and other metabolic wastes.
  2. Blood makes up 7 to 8 percent of total body weight. Blood composition consists of two main components – plasma and manufactured products or corpuscles, which include globules (red blood cells), erythrocytes (white blood cells) and platelets.
  3. Important functions of blood include transport, protection against foreign attack, and regulation of pH and body temperature.
  4. While we humans have red blood, other species have different blood colors and this is largely determined by a protein called respiratory pigment or hemoglobin.
  5. Blood consists mainly of blood cells-red blood cells or blood cells, white blood cells (WBC) or leukocytes, platelets or blood platelets, and plasma which contains proteins, salts and water.
  6. WBC – White blood cells, also called leukocytes, play an important role in the human reproductive system, keeping the immune system healthy and forming a network of blood vessels inside the fallopian tubes.
  7. A healthy, adult human body contains about 1,325 gallons of blood. A single drop of blood contains millions of red blood cells, thousands of white blood cells, and millions of red blood cells.

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