Excretory system - Free Printable

Let’s go step by step to solve this worksheet correctly.

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Part 1: Label the parts of the excretory system

The diagram shows four labeled boxes pointing to different organs. We are given four terms:
→ Bladder
→ Urethra
→ Ureters
→ Kidney

We need to match each term to the correct part in the diagram.

Looking at the anatomy (even though we’re not describing the image, we know from standard biology):

- The kidneys are the two bean-shaped organs near the top — they filter blood.
- The ureters are the tubes that carry urine from kidneys down to the bladder.
- The bladder is the sac-like organ at the bottom that stores urine.
- The urethra is the tube that carries urine out of the body from the bladder.

So, matching from top to bottom in the diagram:

Top box → points to kidney → Kidney
Second box → points to tube from kidney → Ureters
Third box → points to storage sac → Bladder
Bottom box → points to exit tube → Urethra

✔ So the labels from top to bottom should be:
1. Kidney
2. Ureters
3. Bladder
4. Urethra

*(Note: The question says “Write the parts of the digestive system” — but that’s a mistake! This is the EXCRETORY system. We’ll ignore the typo and label the excretory parts as shown.)*

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Part 2: True or False sentences

Let’s check each one:

a) *The function of the excretory system is expel waste from the body.*
→ YES. That’s exactly what it does — removes liquid waste (urine).
✔ TRUE

b) *The ureters filter the blood and separate the waste and the water.*
→ NO. That’s the job of the kidneys, not the ureters. Ureters just carry urine.
FALSE

c) *The combination of waste and water forms the ureter.*
→ NO. Waste + water = urine. Ureter is a tube.
✘ FALSE

d) *The urine goes down two tubes called ureters.*
→ YES. Each kidney connects to the bladder via one ureter → so two total.
✔ TRUE

e) *When the kidney is full, your body tells you to go to the bathroom.*
→ NO. It’s when the bladder is full that you feel the urge. Kidneys don’t store urine.
✘ FALSE

f) *The bladder releases the urine through the urethra.*
→ YES. That’s exactly how it works — bladder squeezes, urine exits via urethra.
✔ TRUE

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Now let’s compile everything for the final answer.

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Final Answer:

1. Labels from top to bottom:
- Kidney
- Ureters
- Bladder
- Urethra

2. True or False:
a) TRUE
b) FALSE
c) FALSE
d) TRUE
e) FALSE
f) TRUE