Show:
How many?
Nervous System
Circulatory System
Digestive System
Respiratory System
100

How many times a day do you blink?

What is a 20,000 times?

100
All of the nerves in the human body originate from this.
What is the brain?
100
These two things transport blood through the body.
What are veins and arteries?
100
This is the first way that food is broken down into smaller pieces in the digestive system.
What is chewing?
100
The body breathes in oxygen and breathes out this gas.
What is carbon dioxide?
200

How many times does the human heart beat each day?

What is 100,000 times?

200
This protects the brain.
What is the skull?
200
This is the colour of veins.
What is blue?
200
This is how we move food from our mouth into our stomach.
What is swallow?
200
These are the two passageways that air enters and leaves the body as we inhale and exhale.
What are through the nose and mouth?
300
This is how many bones there are in an adult.
What is 206?
300
Vertebrae in the back protect this.
What is the spinal cord?
300
The heart has this many compartments.
What is 4?
300
This is the name of the tube in the digestive system that goes from the mouth to the stomach.
What is the esophagus?
300
This is the name of the tube in the respiratory system that goes from the mouth to the lungs.
What is the trachea?
400

How many hairs do you have on your head?

What is 100,000?

400
This side of the brain controls the left side of the body.
What is the right side?
400
This is the name of the artery that blood gets pumped through as soon as it leaves the heart.
What is the aorta?
400
This is where urine is stored in the body.
What is the bladder?
400
This flap keeps food from entering your respiratory system when you swallow.
What is the epiglottis?
500

How many nerve cells are in your brain?

What is ten million?

500
These are the two major functions of nerves.
What are sense feelings (pain, heat, etc) and move muscles
500
This is the name of the vein which blood passes through right before it re-enters the heart.
What is the vena cava?
500
The digestive consists of the esophagus, stomach, and these two other parts.
What are the small intestine and the large intestine?
500
This is the reason your voice gets deeper as you age.
What is loosening of the vocal chords?