Human Body Facts

HUMAN BODY FACTS

Human body is one unique machine that does not run on chargers, it runs by your heart and heart beats, so take care of it as much as you can. These facts are basic facts about what's in our body.

This > sign indicates the beginning of a new set of facts, as each set includes 20 facts.

> A human body is made up of about 100 trillion cells of different types. Similar cells are grouped to form tissue, and tissues form organ.

The amount of blood in an average human body (who weighs 60 KG) is between 4.2 - 4.8 liters.

- Modern scientists claim that there are between 9 and 22 senses for humans, some of them are: Sight, Hearing, Taste, Smell and Touch.

- A human tongue has 4 types of tastes:
* Sweet which is located at the front of the tongue.
* Salty which is on the front sides of the tongue.
* Sour which is on the back sides of the tongue.
* Bitter which is at the end of the tongue.

- A human heart can beat about 100,000 times a day.

- Human's eyes stay the same size since birth.

- Human's average temperature is 36.9 C (98.4 F).

- A human at a very young age has 20 teeth, and 32 teeth when becoming an adult.

- Tongue is the only muscle in the human body that is not connected with any of the two sides of the body.

- The amount of blood in a female body and a baby is less than the amount of blood in the male body.

- Both ears in the human body do not sleep. Sound keeps coming to them while a human is sleeping, but it's the brain that does not function with them.

- The busiest muscle in the human body is the eyes muscles. They move about 100,000 a day.

- A human's brain contains about 10 million cells.

- Every baby is born with blue eyes, then during his/her growth their eyes will acquire their color.

- The Stapes bone is the smallest bone in the human body, which located in the ear. It is shaped like a Stirrup.

- The strongest muscle in the human body is the Masseter, which is located in the jaw.

- The largest bone in the human body is the Femur, or the thigh muscle. It is about 20 inches long in a 6-foot-tall person.

- The largest muscle in the human body is called Gluteus Maximus, located in the buttocks.

- The longest muscle in the human body is called Sartorius.

- Hair on an average human's head is more than a human with red hair.

> The outer layer of skin cells, nail, hair and sweat glands is called Epidermis, while Dermis is the inner layer of living tissue, containing nerves and blood vessels.

- The small intestines are about 25 feet long, while the large intestines are about 5 feet long (5 times less). But they are also about 3 times wider than the small intestines.

- The muscles in the human body are at least 650 and more.

- A human body contains about 70% of water.

- A baby's body has more bones (more than 300 bones) than an adult's body (206 bones). As humans grow, some of their bones join together.

- As humans get older, the amount of calcium decreases, which makes their bones easy to break.

- The pancreas is a gland located behind the stomach. It produces two important hormones: insulin and glucagon. They work to keep the right amount of sugar in the blood.

- As human body gets the glucose sugar from food to use it for energy, the hermone called Insulin regulates the level of glucose in the blood.

- Human's circulatory system consists of two parts: the cardiovascular system and the lymphatic system.

- The optic nerve for humans and other animals leads from the eye to the brain, transmitting visual information.

- Skin organ plays an important role in our body. It helps us survive temperature extremes, bacteria, viruses, ultraviolet rays, and other elements.

- Blood makes up about 1/13 of the total weight of the human body.

- Each drop of blood contains about 300 million of red cells, which is formed in bone marrow.

- Tears are produced by lachrymal gland.

- The largest organ of the human's body is the skin.

- The spleen, which is located behind the stomach, is part of the lymphatic system. It produces lymphocytes, which help our bodies fight infection.

- The kidneys are the main organs to help remove waste substances in our body and any other living being's body.

Sources:
www.britannica.com
www.factmonster.com
www.buzzle.com

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