HMH Unit 9 Lesson 3 Quiz

The picture shows the human circulatory system. What is the function of the organ marked as X?

• to filter blood

• to pump blood

• to add oxygen to the blood

• to remove carbon dioxide from the blood

Humans take in oxygen and release carbon dioxide using lungs. Which organism below uses book lungs to exchange oxygen and carbon dioxide?

• fish

• bird

• spider

• airplane plant

The blood transports oxygen, nutrients, and wastes throughout the body. It also fights infection by attacking germs. Which part of blood fights infection?

• plasma

• platelets

• red blood cells

• white blood cells

There are three types of muscle found in the body. Where are the three types found?

• heart, brain, skeletal muscle

• heart, blood vessel walls, bones

• heart, skeletal muscle, blood vessel walls

• heart, skeletal muscle, blood vessel walls

You get a cut. The​ (a)   help to close the cut.

• platelets
• plasma
• red blood cells
• white blood cells

The ​ (a)   help to fight infection and get rid of germs.

• red blood cells
• plasma
• platelets
• white blood cells

The _________ helps carry all of the blood cells to the wound area.

• platelets

• plasma

• red blood cells

• white blood cells

Air enters through the mouth or nose and travels through the​ (a)  

• trachea
• bronchi
• bronchioles
• alveoli

Oxygen enters the blood and ______ ______ leaves the blood and travels to the mouth or nose to be exhaled.

• carbon dioxide

• carbon monoxide

• oxygen dioxide

• sodium chloride

Plants bring air into their bodies using structures called _______.

• stomata

• stoma

• mouths

• stems