The skeletal and muscular system Flashcards
How many bones are within the skeletal system
More than 200
Which mineral allows the bones to be strong but also slightly flexible?
Calcium
What are the 4 functions of the skeleton?
1) to support the body
2) to protect vital organs
3) help the body move
4) make blood cells
Where are red and white blood cells made?
In the bone marrow
What are joints?
Where the bones link together
What is the synovial joint?
Synovial fluid which keeps cartilage slippery, preventing bones rubbing together
What is a hinge joint?
Opens and closes like a door eg the knee
What is a ball and socket joint?
Rotates back and forth eg hip and shoulder
How do muscles work?
By getting shorter/ contracting
What are antagonistic muscles?
Muscles working in pairs as singularly they cannot move back and forth alone.
