How much do you know about human hand facts?

How much do you know about human hand facts? Check it below:

• Hands are the things making our life really tough if we lose them. Below are some amazing facts about the really amazing body part.
• One out of three every emergency acute injuries is related to upper limbs.
• And two out of upper limb injuries happen within people’s working years.
• In the U.S., disable injuries at work are most common with upper extremities at the rate of 25% of all disable work injuries.
• 25% of athletic injuries involve hand and wrist.
• Fingers have no muscles. The muscles bending the finger are situated in the palm and up to mid forearm. They are linked to the finger bones by tendons to move the fingers as strings seen in a marionette. 

• The wrinkles on the back of fingers are the mark of where the skin is attached to the tendon.
• Here are major statistics about hand. There are 29 major and minor bones (many people have a few more) with 29 major joints. Scientists gave name for at least 123 ligaments. 34 muscles are in charge of moving the fingers and thumb: 17 in the palm of the hand, and 18 in the forearm. 48 named nerves: 3 major nerves, 24 named sensory branches, 21 named muscular branches. 30 arteries and nearly as many smaller branches are named.
• The thumb is controlled by 9 individual muscles, which are controlled by 3 major hand nerves.
• 90% of women and 80% of men at the age from 75 to 79 have osteoarthritis in their hands.
• Fingernail has no feeling, but the skin beneath the nail does. Loss of a fingernail can cause changes in feeling on the opposite side of fingertip.
• One-fourth motor cortex in human brain whose area controls all movement of body is spent on muscles on hands.
• Structurally, fingernails are modified hairs.
• Skin of palm has no hair, has unique fingerprints. It cannot get tanned. It is tough, durable but sensitive.
• The Hand has been used as a symbol of protection since ancient times.

• We use our hands everyday and it is almost impossible to imagine our life without them. But what do we know about our most active parts of the body. The following are the most interesting facts about our hands and arms:
• There are no muscles in your fingers. The muscles that move your fingers are located in the palm and up in the mid forearm. They're connected to the finger bones by tendons which pull and move the fingers like the strings of a marionette.
• The Hand has been used as a symbol of protection since ancient times.
• Your fingernails grow about the same amount as the Continents move every year.
• It takes 6 months for your fingernails to grow all the way from the root to the tip. Your toenails take 2-3 times as long.
• The longest Fingernails ever belonged to Shidhar Chillal. They were 20 feet, 2.25 inches! It took 48 years to grow them.
• 12.6% of all men are left-handed, while only 9.9% of all women are.
• One third of all acute injuries seen in emergency rooms involve the upper extremities.
• One fourth of athletic injuries involve the hand and wrist.
• When the hand is kept wet, the skin of the palm wrinkles. Why? The exact mechanism is not known, but it is clearly controlled by nerves. When the nerve which supplies feeling to an area of skin on the palm is cut, that area of skin not only becomes numb, loses its ability to wrinkle when wet. It also loses the ability to sweat.