Give 1 function of the skeleton.
protect our organs, give shape, allow us to move, helps us to grow
When we bend our arms, what happen to the biceps and triceps?
the biceps contracts and the triceps relax.
When we straighten our arms, what will happen to your front muscles or biceps and back muscles or triceps?
The biceps relaxes and the triceps contracts.
What do you call animals with no backbones?
invertebrates
What is the function of the skull?
protect the brain
What is the function of the backbone or spine?
Protect the spinal cord
Example of animal that has exoskeleton.
What is the function of the exoskeleton?
Protect the animals and supports the animal's body.
What is the skeleton made of?
bones
How many bones do adults have?
206
What is the difference between vertebrates and invertebrates?
Vertebrates have a backbone, while invertebrates do not.
Why do we need skeletons?
We need skeletons to protect our organs, support our body, and give our body shape.
What happens when a muscle contracts?
It shortens
