Facts about Humans

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1.Appendix and digestion in humans

Though the appendix is seen as a part that for a long time has lost importance, it is important to bacteria that aid the digestive system. The bacteria use it to relief off the frantic activity in the gut. It also serves as a breeding place for bacteria and helps keep bacterial inhabitants in the gut at top levels.

2.Human chromosome is the biggest molecule

Everything we interact with contains molecules that vary in size. A chromosome is nature’s biggest molecule and resides in the human body. The normal human cell contains 23 chromosome pairs in the nucleus and each has a single long DNA molecule. Chromosome 1 is the largest with about 10 billion atoms.

3.Human atom count

Due to their small size, it is difficult to grasp how many atoms make up the human body. An adult human being has about 7 octillion 7,000,000,000,000,000,000,000,000,000 (7 octillion) atoms.

4.The human brain

The human brain is a jelly like mass of protein and fat that weighs about 1.4 kilograms. As one of the biggest body organs, it contains about 100 billion nerve cells that assemble highly coordinated thoughts and physical actions and also regulate unconscious body processes like breathing and digestion.

5.Similarity of humans to chimpanzees

Human beings have a similar amount of hair on their bodies as the chimpanzees only than human body hair is fine and almost invisible. Humans also have other similar characteristics with infantile apes including small mouths, large heads and fine body hair.

6.The Hardest working muscles in humans

Heart muscles are the hardest working muscles in the human body. With each heartbeat, the heart muscle pumps 71 grams of blood. In a day, the heart pumps about 9,450 liters of blood. During a person’s lifetime the heart has the capacity to beat more than 3 billion times.

7.The strongest muscles in humans based on weight

The Masseter muscle is the strongest muscle in the human body based on weight. When all jaw muscles are working unanimously, the masseter jaw can close the human teeth with a force that is greater than 25 kilograms on the incisors and about 90.7 kilograms on the molars.

8.The strongest muscles in humans

Eye muscles are always in motions to readjust eye positions. When the head is moving, the external eye muscles keep adjusting the eye position in order to maintain steady fixation points. External eye muscles are subject to fatigue. However, within an hour of constant book reading, the human eyes make about 10,000 coordinated movements.

 9.The human tongue is a tough worker

The tongue is the toughest worker in the human body. It comprises groups of muscles and just like the tongue, it works throughout. The tongue helps in the process of mixing foods and also contorts and binds itself to create letters that humans use in speech. The tongue also has linguinal tonsils which filter germs and stop them from entering the body. Even while asleep, the tongue continues to work by pushing saliva to the throat passage.

10.Human’s wisdom teeth

Human beings have back molars that are impacted by the jaws when the mouth closes. The back molars are often the last teeth to get into place. These teeth were very useful to the human ancestors who fed on uncooked, tough food that wore teeth away. However, cooking and other ways of softening foods has made the size of human jaws to diminish. This has created room for last molars to form part of the jaw known as the wisdom teeth.

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