Digestive System
What is the name of the long tube that carries food from the mouth to the stomach?
The esophagus.
What organ is responsible for taking in oxygen?
The lungs
What organ filters waste from the blood?
The kidneys.
What organ pumps blood around the body?
The heart
What is the role of the small intestine in digestion?
To absorb nutrients from digested food.
Where in the lungs does gas exchange happen?
In the alveoli.
What liquid waste is made by the kidneys?
Urine.
What do red blood cells carry to the body’s cells?
Oxygen.
What does the liver produce to help break down fats?
Bile
Why is the diaphragm important for breathing?
It contracts and relaxes to help move air in and out of the lungs.
What is the role of the bladder in the excretory system?
It stores urine before it leaves the body.
Name the three main types of blood vessels.
Arteries, veins, and capillaries.
Put these in order: stomach, mouth, large intestine, small intestine, esophagus.
Mouth → Esophagus → Stomach → Small intestine → Large intestine.
What is the difference between breathing and respiration?
Breathing is taking air in and out; respiration is using oxygen in cells to make energy.
How does the skin help in excretion?
It removes waste like salts and water through sweat.
What is the difference between arteries and veins?
Arteries carry blood away from the heart; veins carry blood back to the heart.
Explain what might happen if the small intestine did not work properly.
Nutrients wouldn’t be absorbed, leading to malnutrition.
How would asthma affect the respiratory system’s function?
It narrows airways, making it harder to move air in and out, reducing oxygen exchange.
What might happen if one kidney stops working?
The other kidney can usually compensate, but waste may build up if both are affected.
How does the circulatory system work with the respiratory system to keep the body alive?
The circulatory system transports oxygen from the lungs to the cells and carbon dioxide from the cells back to the lungs for exhalation.