Human body 1
Human body 2
Human body 3
Human body 4
100

The strongest muscle.

Jaw

100

What beats around 100 000 times a day?

Heart

100

What muscle never tires?

Heart

100

The fastest muscle?

Eye

200

How many times do you blink in a minute?

20 times

200

What filters waste from the blood?

Kidney

200

What body parts never stop growing?

Ears

200

How many muscles are in the human body?

About 550

About 650

About 750

650 (639)

300

What transports oxygen around?

Blood

300

Which type of blood cells fights viruses?

White blood cells

300

Do women blink more than men?

Yes

300

How big is your heart?

Aproximently as big as your fist

400

What uses around 20% of energy in human body?

Brain

400

When listening to music, does your heart sync with the music?

No, but it is affected by the music.

400

How much water does your body contain?

60%

400

How much does a grown human's brain weigh?

1,5 kg

500

How many bones are in the human skeleton?

197

206

135

206

500

How long does an eyelash live before it falls out?


Four to eleven months
500

Why is the left lung smaller than the right?

To make room for the heart.

500

How many muscles do you use to say one word?


More than 80