Why is the skull an important part of our skeleton?
The skull is important because it protects our brain.
(True or False) Not all drugs are medicines.
True
Who has more bones, a baby or an adult? Why?
A baby has more bones because as the baby grows, some of its bones join together.
How do our muscles work?
Muscles work in pairs. When one muscle contracts the other muscle relaxes.
Which part of our skeleton protect the heart and lungs?
The ribs.
A drug that makes our bodies better when we are sick.
medicine
It is a hard, strong frame that supports our bodies.
skeleton
(True or False) Medicines are the same as drugs.
False
Animals with no skeleton are called ____________.
invertebrates
Muscles allow us to ______.
move
It is when a muscle gets shorter and pulls a bone.
contract
It is when a muscle get longer or returns to its normal size.
relax
_________ are substances that change our bodies in some way. Many of these have good effects but some can have bad effects to our bodies.
drugs