Staying Alive Flashcards
1
Q
How many bones are in our skeletal system?
A
Over 200
2
Q
What helps to keep the bones strong but also slightly flexible?
A
Calcium
3
Q
What is bone?
A
A living tissue with a blood supple.
4
Q
What are the four functions of the skeleton?
A
To support the body,
To protect some of the vital organs of the body,
To help the body move,
To make blood cells
5
Q
What is needed to move bones attached by joints?
A
Muscle
6
Q
What are muscles attached to the bones by?
A
Strong tendons
7
Q
What is a pair of muscles called?
A
Antagonistic pairs
8
Q
What happens when a muscle contracts?
A
It gets shorter and fatter
9
Q
What happens when a muscle relaxes?
A
It gets longer and thinner?
10
Q
What is biomechanics?
A
The way in which muscles and bones work together to exert forces
