THE HUMAN BODY

Where in the body are new blood cells made?

• Brain

• Bones

• Heart

• Liver

What connects your muscles to your bones?

• Skin

• Ligaments

• Cartilage

• Tendons

What is the heaviest organ in the human body?

• Liver

• Skin

• Kidney

• Brain

How many bones are there in an adult human body?

• 152

• 250

• 178

• 206

A human's thumb is as long as his/her nose.

• True

• False

What substance are nails made of?

• Keratin

• Calcium

• Zinc

• Magnesium

What is the name of the substance that gives skin and hair its pigment?

• Melanin

• Keratin

• Serotonin

• Dopamine

How many pairs of ribs does the human body have?

• 12

• 14

• 16

• 18

Where is most of the calcium in the body contained?

• Hair

• Bones and teeth

• Fingernails and toenails

• Skull

Which of the following statements is true?

• The right lung is smaller than the left.

• The left lung is smaller than the right.

• Both lungs are the same size.