3.5 Taking out the rubbish

• Biologie
• Middelbare school
• havo
• Leerjaar 3

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3.5 Excretion

* Waste needs to be removed otherwise it piles up

* Excretory organs remove waste by excretion

Lesson goals

In the end of this lesson:

• I can mention how the kidneys function
• i can mention 

00:38

What are the main functions the kidneys.? (Select one of the correct answers)

1. Balance the amount of fluid in the body
2. Release digestive juices
3. Release vitamins, minerals and hormones
4. Detect waste in your blood

01:50

This type of blood vessel delivers blood TO the organs and tissues.

1. Arteries
2. Veins

02:28

The ureters deliver the urine to the bladder. While the urethra delivers the urine out of the body.

1. True
2. False

02:29

The renal vein delivers the unfiltered blood to the kidney.

1. True
2. False

Important differende between ureters and the urethra 

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