Hands -Science

How do your hands work and what are the parts:

Bones: 

There are 27 bones in your hand.

• 5 bones in your palm
• 8 bones in your wrist
• 14 bones for your fingers

Tendons:

What is a tendon? 

A tendon is a stringy connective tissue that attaches muscle to the forearm bone which allows your phalanges (fingers) to move up and down. Tendons also attaches muscles to the structure such as the eyeball.   

Muscles:

The muscles in your hand are Thumb Muscles, Palmar Muscles and Little Finger Muscles. The main muscle in your hand that moves your phalanges is called Flexor Digitorum Profundus. This muscle is in the forearm which flexes the fingers to move, contacting and relaxing the tendons. 

Ligaments:

The ligaments are strong bands of connective tissue that attaches to the bones to support them and keep them in place.  Ligaments also help structure of movement for your fingers so they aren't jelly.