Human Body Systems
Random
Fun Facts
Fun Facts 2
Body Features
100

What is the vascular system?

The vascular system, also known as the circulatory system carries blood around the body.

100

What makes red blood cells?

Your bones make red blood cells.

100

What is the largest organ in the human body?

It's not the lungs, it's the skin. 
100

Is your thumb the same size as your nose?

Yes, it surprisingly is. 

100

What controls what you look like?

Well, the main factor is genetics, but diet, fitness, and overall health can impact that. 

200

What is the respiratory system?  

The respiratory system is how you breathe.  

200

What is a white blood cell?

A white blood cell is a part of the immune system, lives in the blood, and helps fight off germs

200

At what rate does an average human being sneeze?

100 miles per hour

200

How many times will your heartbeat, if you live to 70 years old?

2.5 billion times, that's one strong muscle

200

What is the most common eye color?

Brown eyes.

300

What is the muscular system? 

The muscular system is in basic terms your muscles.

300

How much time do people spend on a toilet in their lifetime?

By the end of your lifetime, you will have spent an average of a year on a toilet.

300

What percentage of the human body is made of water?

66%

300

When does a baby first shed tears? 1 month, 6 months, or 12 months. 

Babies will only shed their first tear at 1-month-old. 

300

What is a BMI?

It is your body condition. For example, a taller person will have a larger BMI than someone who is shorter.

400

What is the musculoskeletal system?

It is the system that helps you walk.

400

What is the lifespan of a red blood cell? 1 year, 120 days, or 5 months. 

Around 120 days.

400

What part of the human body has the smallest bone?

The ear

400

How long is the lifespan of an eyelash?

150 days

400

What is the rarest eye and hair color combo? 

Well unfortunately it probably isn't you, the rarest is red hair with blue eyes. Because they are both recessive traits, that means you can only get them from your parent. 

500

What is the endocrine system? 

The endocrine system helps control hormones and hormone glands. 

500

What are the 2 hemispheres of the brain connected by?

The 2 hemispheres of the brain are connected by the Corpus Callosum

500

How many strands of hair fall off every day? 

Between 50 to 100.

500

How long is the small intestine?

23 feet

500

How many gallons do you sweat by the end of an average life? 

4,284 gallons, enough to fill 100 bathtubes.

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