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WorksheetsUnderstanding Digestion and Excretion
Total questions: 25
Worksheet time: 13mins
What is the main function of the digestive system?
To help you breathe
To break down food into substances your cells can use
To pump blood throughout the body
To control movement
Which organ produces bile?
Pancreas
Liver
Gallbladder
Stomach
What is the function of the gallbladder?
Produces enzymes
Stores bile until it is needed in the small intestine
Absorbs nutrients
Filters blood
Where does most digestion take place?
Stomach
Small intestine
Large intestine
Mouth
Which organ stores urine until it is ready to be removed from the body?
Ureter
Bladder
Urethra
Colon
What is the main function of the kidneys?
Store urine
Filter water and dissolved waste from the blood
Produce bile
Absorb nutrients
Which tube lets urine leave your body?
Ureter
Urethra
Colon
Esophagus
What is the function of enzymes in your saliva?
Absorb nutrients
Break down food into smaller pieces
Store bile
Filter blood
How long can food stay in the stomach?
Up to 1 hour
Up to 2 hours
Up to 4 hours
Up to 8 hours
What is the length of the small intestine?
5-7 feet
10-12 feet
20-23 feet
30-35 feet
Which organ produces pancreatic juice?
Liver
Pancreas
Gallbladder
Colon
What is the main function of the excretory system?
Absorb nutrients
Remove wastes from the body
Produce enzymes
Store bile
What happens to waste products that do not get absorbed in the small intestine?
They are stored in the gallbladder
They travel to the large intestine
They are filtered by the kidneys
They are broken down by the pancreas
Which organ absorbs water from waste to form solid waste?
Small intestine
Colon (Large intestine)
Stomach
Liver
Which organ is responsible for filtering blood and creating urine?
Ureter
Kidney
Bladder
Pancreas
Which of the following best describes the role of the pancreas in digestion?
It stores bile for fat digestion
It produces pancreatic juice to break down proteins, carbohydrates, and fats
It absorbs water from waste
It filters blood
If the gallbladder is removed, which digestive process would be most affected?
Digestion of proteins
Digestion of fats
Absorption of water
Filtration of blood
What would happen if the kidneys stopped working properly?
The body would not be able to digest fats
Waste and excess water would build up in the blood
The body would not produce bile
Food would not be broken down
How does the excretory system help maintain homeostasis in the body?
By absorbing nutrients
By removing wastes and maintaining water and salt balance
By producing enzymes
By digesting fats
If a person’s pancreas does not produce enough enzymes, what might happen to their digestion?
They would digest food faster
They would have trouble breaking down proteins, carbohydrates, and fats
They would absorb more water
They would store more bile
Why is it important for the colon to absorb water from waste?
To make waste easier to digest
To form solid waste for easier elimination
To produce bile
To filter blood
Which sequence correctly shows the path of food through the digestive system?
Mouth → Stomach → Small intestine → Large intestine
Mouth → Large intestine → Small intestine → Stomach
Stomach → Mouth → Small intestine → Large intestine
Small intestine → Mouth → Stomach → Large intestine
A person is unable to produce bile. Which nutrient would be most difficult for them to digest?
Carbohydrates
Fats
Proteins
Vitamins
A patient is experiencing dehydration and their urine is very concentrated. Which organ is most likely not functioning properly?
Liver
Kidney
Pancreas
Gallbladder
A doctor finds that a patient’s large intestine is not absorbing enough water. What symptoms might the patient experience?
Constipation
Diarrhea
Increased bile production
Difficulty digesting proteins
