This is a ________
This is a _____
The skull protects the
Brain
Where two bones meet it's called a
Joint
The boy is sleeping. Is he relaxing or contracting the muscles?
Relaxing
Are they contracting or relaxing their muscles?
Contracting
Contracting or relaxing the muscle?
Contracting
Muscles move different body parts by relaxing and contracting? True or False
True
The ribcage protects what organs?
Heart and Lungs
The respiratory system helps us
Breathe
Exhalation is when we breathe ....
OUT
Inhalation is when we breathe ....
In
All living things need Oxygen - True or False
Our lungs take in Oxygen - True or False
