The Digestive System
The Circulatory System
The Respiratory System
The Excretory System
The Heart
100

The digestive system breaks down food and releases ____________ into the blood.

nutrients 

100

The ______ is one of the most of the most important organs because it is the engine of our body. 

Heart

100

Air enters our body through our ____ and mouth.

nose

100

The excretory system eliminates waste and excess water from the body in the form of_______.

Urine

100

The heart has ___ main parts.

Two

200

The food goes down the ________.

Esophagus
200

The circulatory system transports nutrients and oxygen to our organs, _______, brains, and muscles.

Bones

200

What is the name of the gas we inhale?

oxygen

200

Urine is stored here until you have to go to the bathroom

Bladder


200

There are two _______ in each part.

Chambers

300

The __________ in the stomach break the food into smaller pieces. 

gastric juices


300

The heart pumps blood around the body, which then circulates in tubes called ______ and _______.

arteries, veins

300

What is the name of the gas we expel?

carbon dioxide

300

People have two of these organs. They filter and remove waste products from the bood.

Kidneys

300

The upper chambers are called

atriums

400

The ___________________ absorbs the nutrients from the food and they pass into the blood. 

small intestines

400

The blood containing nutrients and oxygen flows _____ from the heart.

A. Away

B. Towards

away

400

Air flows down the _____ and into the lungs.

trachea

400

Urine leaves your body through this organ. 

Urethra

400

The lower chambers are called 

Ventricles 

500

The ______________ absorbs the water and waste pasess into the colon. 

large intestine

500
The __________ blood carries carbon dioxide and flows back towards the heart in the veins.


A. Oxygenated

B. Deoxygenated

deoxygenated

500

There are lots of small air tubes inside the lungs called______.

Bronchioles

500

Urine travels down these two tubes

Ureter

500

The _______ allows the oxygenated blood to travel from your heart to the rest of your body.

Aorta