What is the main organ of the nervous system?
Brain
What is the main organ of the respiratory system?
lungs
The heart is the most important organ of which system?
The Circulatory System
How many bones does the skeletal system have?
206 bones
TRUE or FALSE: Digestion is the process where the body breaks down food to give us energy.
True
TRUE or FALSE: All muscles always move without you thinking about it.
False
The _______ is in charge of the color of your eyes.
iris
TRUE or FALSE:Animals use their senses to receive signals from their enviroment.
True
Animals use their perception and _________ to help them respond to situations.
Memories
When the light is bright the pupil becomes __________?
smaller
When it is dark the pupil becomes ____________?
bigger
What part of the eye send the information to the brain?
optic nerve
TRUE or FALSE: Reflection occurs when light rays bounce from a surface back to our eyes.
True
Why do black objects feel warmer than white objects on a sunny day?
They absorb more light.
What is different about the eyes of nocturnal animals?
they have bigger pupils
How many senses do animals and humans have?
5
