This phrase that people say means that your health, or unhealth, depends on what you eat.
What does "You are what you eat" mean?
100
They clean large particles of dust from the air.
Why are the hairs in your nose useful?
100
Some of those jobs are heartbeat, breathing, digestion, bleeding. There are more but these are a few.
What are some of the jobs the brain does automatically?
100
They stretch 160000 km when laid end to end.
How far would the blood vessels in your body reach if they were laid end to end?
100
It is the smallest unit in the body, there are trillions.
What is a cell?
200
The digestive system.
The mouth, esophagus, stomach, small intestine and large intestine each have a role to play in what system?
200
It branches into 2 bronchus tubes that lead to the lungs.
How is the trachea separated?
200
It communicates with the nerve cells in the rest of your body through the spinal cord.
How does your brain communicate with the nerve cells in the rest of your body?
200
These 3 things together make up the circulatory system.
What do the heart, blood and blood vessels have in common?
200
One example of working together is when the blood picks up oxygen from the alveoli in the lungs and carries it to all parts of the body.
How do the circulatory system and the respiratory system work together?
300
Enzymes and gastric juices break down the food into even smaller pieces.
What takes place in the stomach?
300
These are smaller tubes branching off of the bronchus and then even smaller air sacs branching off at the end.
What are the bronchioles and the alveoli?
300
These things work together in this system: brain, spinal cord, nerves.
What are the things that work together to make up the nervous system?
300
About once every second.
How many times a second does the heart squeeze?
300
To get to all parts of your body nutrients are absorbed through the walls of the intestine and carried through the blood which travels to all parts of the body.
How do nutrients in your food get into the rest of the body?
400
It doesn't have food and the gases make loud gurgling noises.
What sound does your stomach sometimes make and why?
400
Here oxygen is transferred to the blood.
What is transferred to the blood in the alveoli?
400
Our body is ALWAYS reacting to messages from our brain!
How often is our body reacting to messages from our brain?
400
More than half of it is plasma, the rest is a combination of red cells, white cells and platelets.
What is blood?
400
There are 4 chambers.
How many chambers are in your heart?
500
The final stages of digestion take place in the small intestine. Chemicals from these mix with juices from the food and break it completely down.
What is the job of the pancreas and the liver?
500
Smoking, smog and pollen can affect this system.
What environmental factors affect the respiratory system?
500
We can get faster with practice and repetition.
How can we improve the reaction time of a message sent from our brain to our muscles?
500
They help the blood thicken and clot, if they didn't you could bleed to death.
What is the job of the platelets in the blood?
500
White blood cells fight germs, red blood cells carry oxygen.