our organ system

Which of the following ISN'T an organ?

• eye

• heart

• brain

• hair

A group of organs that works together is called...

• a team

• organic tissue

• organelles

• an organ system

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Select all the steps that are part of the digestive system:

• food enters the system through the mouth

• food travels down the oesophagus

• through digestion, food is broken down into particles

• the blood carries the nutrients to the rest of the body

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Select all the blood vessels:

• veins

• heart

• arteries

• lungs

What is the function of the circulatory system?

• to separate the nutrients from the waste

• to transport substances all over the body

• to help different parts of the body communicate with one another

• to allow the cells in the body to respire

How does the nervous system work?

• signals come only from the sense organs

• signals come only from the spinal cord

• signals travel along nerves to all the body organs

• signals come only from the brain

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How do nerves help the different organs in the body to work together?

• they help them communicate

• they help them carry out new functions

• they help them create signals

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Which of the following elements is a waste product of the human respiratory system?

• oxygen

• water

• carbon dioxide

When does carbon dioxide leave our bodies?

• when we sweat

• when we breathe out/ exhale

• when we breathe in/ inhale