Human Body Systems Quiz

What does your immune system do?

• makes you sick

• protect you from illness

• keeps your brain sharp

• makes energy for your body

What is the largest organ in your body?

• brain

• heart

• liver

• skin

How many bones do adults have?

• 206

• 300

• 252

• 14

Which is NOT a muscle?

• tongue

• heart

• bicep

• rib cage

Your kidneys filter your...

• water

• white blood cells

• blood

• plasma

Your kidneys and heart are about the size of a...

• fist

• leg

• brain

• elbow

Which of these is NOT a part of your digestive system?

• small intestine

• large intestine

• stomach

• cerebrum

Tags

NGSS.MS-LS1-7

Your lungs use _______ and give it to the red blood cells.

• carbon dioxide

• oxygen

• nitrogen

• helium

Tags

NGSS.MS-LS1-3

Your heart pumps _______ throughout your body.

• white blood cells

• water

• air

• blood

Tags

NGSS.MS-LS1-3

Which of these is NOT a part of your brain?

• bone marrow

• cerebellum

• amygdala

• cerebrum