Explore Intricate Human Body Facts And Secrets, And Learn The Internal Details Of Our Organic Machine.

The vast system of blood vessels, arteries, veins, and capillaries, is over 60,000 miles long. That's long enough to go around the world more than two times.

The human bone, pound for pound, is 4 times stronger than concrete.

The muscles that control the eyes contract about 100,000 times a day (that’s the equivalent of walking 50 miles daily).

The hardest bone in the body is the jaw bone.

The bone is stronger than some steel.

The resolution of the human eye is about 576 megapixels.

Research has shown that a single hair strand could hold 100g (3oz) in weight. The combined hair of a whole head could support 12 tonnes, or the weight of two elephants. Weight for weight, it is as strong as aluminium, or reinforced glass fibers or Kevlar, which is used to make bulletproof vests.

The brain is the most precious organ in the human body; this is because it controls the activity of all organs and systems.

The skin is the largest organ in the human body. However, the largest solid internal organ goes to the liver.

In an hour of reading a book the eyes make nearly 10,000 coordinated movements.

The heart is the hardest working muscle is the body. It pumps out 71 grams (2 ounces) of blood at every heartbeat and pumps at least 2,500 gallons (9,450 liters) of blood. It also has the ability to beat over 3 billion times in a person’s life.

The strongest muscle based on its weight is the Masseter, located in the jaw. With all muscles of the jaw working together it can close the teeth with a force as 25 kilograms on the incisors or 90.7 kilograms on the molars.

There are five basic tastes, sweet, salty, bitter, sour, and umami.

Pungency (spiciness) is not considered a taste technically because it is carried to the brain by a different set of nerves. While taste nerves are activated when consuming foods like chili peppers, the sensation commonly interpreted as "hot" results from the stimulation of somatosensory fibers located in the mouth.

More than half of your bones are located in your hands, wrists, feet, and ankles.

The pineal gland, located in the brain, is the smallest organ in the human body.

The stapes is the smallest bone in the body and is found in the ear. It measures about 2 to 3 millimeters in size.

The Ovum (female gamete) is the largest cell in the human body. It is a single cell released from the ovary every month. It is 0.1 millimeters in diameter.

The smallest cell in the body is the sperm cell.

The vascular system transports around a million barrels of blood in one's lifetime.