3.5 Taking out the rubbish

• Biologie
• Middelbare school
• vwo
• Leerjaar 2

Paragraph 3.5: Taking out the 'rubbish'

Lesson objectives

• You can name all excretory organs, and explain what their functions are
• You can explain which waste materials are disposed of in each of the excretory organs
• You can explain how the kidney filters blood and produces urine

We will revisit these lesson goals later on!

What is the definition of excretion?

excretory organs

what is the way of urine?

a kidney

- blood enters via Renal Artery

- Flows to the Cortex

- is cleaned in Nephrons in the 

   Medulla

- blood flows through the Renal vein 

- urine flows to the Renal pelvis

- into the ureter

(- to the bladder)

Discussion

Discuss with your neighbor whether you would donate one of your kidneys to one of your parents?

Or a friend?

Or a total stranger?

Lesson objectives

• You can name all excretory organs, and explain what their functions are
• You can explain which waste materials are disposed of in each of the excretory organs
• You can explain how the kidney filters blood and produces urine

We will revisit these lesson goals later on!

Which of the follwoing substances is not a waste product?

1. Toxins
2. Glucose
3. excess water and salt
4. Carbon dioxide

Which of the following organs is not an excretory organ?

1. Large intestine
2. Kidney
3. Small intestine
4. Skin

Large intestine

Skin

Lungs

Kidneys

Carbon Dioxide

Other waste from blood

Undigested food

Salt

Water

Water

Water

Water

Salt

The kidney recieves blood from

Tis renal artery is...

1. high in oxygen and high in waste products
2. high in oxygen and low in waste products
3. low in oxygen and high in waste prodcuts
4. low in oxygen and low in waste products

The main function of the kidney is

1. To remove carbon dioxide from the blood
2. to remove waste products from the blood
3. To add carbondioxide to the blood
4. To add nutrients to the blood

Work to be done

3.5: Exercises 70-74 

check the concept list and

Glossary puzzle (p. 99 – 100)