Science: The Anatomy of the Human Hand

 Hi there!

Today I will be writing about the anatomy of the human hand, something my class is learning about. 

The hand is made up of the following:

• Joints
• Joints do the following:
• They allow us to move our fingers in many different ways such as bending our fingers, flexing them, spreading them and bringing them in. They are also important for pinching things as well as grip. 
• Bones
• Bones do the following: 
• They give our hands form and stability. Without them, our hands would flop over and be like jelly. We have 3 types of bones in our hands:
• Phalanges, our finger bones
• Metacarpals, bones in the middle of our hand
• Carpals, our wrist bones
• Fun fact: each hand is made up of 27 bones!
• Cartilage
• What does Cartilage do?
• Cartilage covers the end of joints to help movement be smooth and help those movements glide too. 
• Muscles
• What do Muscles do?
• We have two types of muscles, flexor muscles and extensor muslces. Our flexor muscles bend our fingers and thumb, while the extensor muscles straighten them out 
• Tendons
  
• How tendons work:
• Tendons work to make our fingers move. They are basically strings inside our hand.
• Ligaments
• How Ligaments work:
• ligaments are really just tunnels for our tendons. Our tendons can slide up and down through the ligaments. 

Below are some photos of the hand:

Thanks for reading!