Circulatory System
Respiratory System
Digestive System
Excretory System
Random
100
The circulatory system transports oxygen, nutrients, and wastes through the body in the ____.
What is blood?
100
The ____ are the major organs of the respiratory system.
What are the lungs?
100
The digestive system performs two functions: The first is to break ____ into nutrients, and the second is to get the nutrients into the ____.
What is food and blood?
100
____ are the major organs of the excretory system which are located behind the liver and stomach.
What are kidneys?
100
____ is 95% water, 2.5% urea, and 2.5% salts and minerals.
What is urine?
200
The heart has ____ chambers.
What is 4?
200
____ is a waste product that is exhaled.
What is carbon dioxide?
200
Glands in your mouth produce ____ which moistens food and begins to break it down.
What is saliva?
200
Ammonia is carried by the blood to the liver, where it is changed to ____.
What is urea?
200
The ____ system provides the body's cells with the oxygen needed to produce energy.
What is the respiratory system?
300
____ blood cells absorb oxygen from air in the lungs and transport it to every cell in the body, while ____ blood cells help the body fight infection.
What are red and white blood cells?
300
Warm, clean air travels down your ____, or windpipe.
What is the trachea?
300
When you swallow, food passes through the ____, a long tube that leads to the stomach.
What is the esophagus?
300
Urine flows from the kidneys through tubes called ____.
What are ureters?
300
Your bladder can hold approximately ____ oz of urine.
What is 16oz?
400
____ pump oxygen-rich blood away from the heart, while ____ pump oxygen-poor blood to the heart.
What are arteries and veins?
400
In your chest, the trachea branches into two tubes called ____.
What is bronchi?
400
The ____ produces bile, which is stored in the gallbladder until it is needed.
What is the liver?
400
The ureters empty into a muscular organ called the ____.
What is the bladder?
400
From the stomach, food moves into the ____.
What is the small intestine?
500
____ are blood vessels so small that blood cells have to move through them in a single file.
What are capillaries?
500
At the end of the smallest tubes are tiny air sacs called ____.
What is alveoli?
500
Nutrients diffuse through the ____, projections sticking out of the walls of the small intestine, into the blood.
What is villi?
500
When the bladder is full, urine leaves the body through a channel called the ____.
What is the urethra?
500
The liquid part of blood, called ____, is mostly water.
What is plasma?
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