2TTO Ch4.5

• Biologie
• Middelbare school
• vwo
• Leerjaar 2

Section 4.5

Paragraph 4.5: Taking out the 'rubbish'

This powerpoint will be shared with you to work through at your own pace. At some points you will receive questions, which you can answer. If you get stuck, your teacher will be available to help!

Lesson goals

• 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!

To introduce the lesson..

• To start, you will answer a few short questions to check your preparation
• During this lesson you will watch a video that explains how the excretory system works, and which parts it consists of. In addition, you can also study the paragraph itself. (if I'm correct, you have already done this!)
  
• Take notes during the video & when you read the paragraph, you will have to show me these later.
• Afterwards you will answer a few questions about the matter, to check if you have understood it.

Which of the following organs is not an excretory organ?

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

The next slide will contain a 'drag and drop'-question. Drag the waste products (in blue) towards the correct excretory organ (in red). Make sure there are no double waste products in organs!

Large intestine

Skin

Lungs

Kidneys

Carbon Dioxide

Other waste from blood

Undigested food

Salt

Water

Water

Water

Water

Salt

The video

• In the next slide, you will find the video that explains how the excretory system works. 
• You can skip the part from 5:00 until 7:30. 
• During the video, take some notes! You can pause the video, and view some parts again if you want to. 
• When words are used that you don't know, write them down and look them up.
• The video goes a little more into detail than the book, but it will help you understand!

• This video explained the                as well as the                 of the urinary system.
• Now, study the part in paragraph 4.5 about urinary diseases and disorders for yourself. Again, take notes. You will need them later!

Anatomy

Anatomy = the structure (which parts it contains and what they look like)

Physiology

Physiology = how the system works 

Back to the lesson goals..

As mentioned earlier, we would be coming back to the lesson goals.

The following slides will show a question related to the lesson goals, which you can answer. Through this, we will test whether you have 'completed' this lesson and are able to move on.

Name the four excretory organs that are discussed in the book.

What is the excretory organ mentioned in the video, but not in the book?

1. Skin
2. Lungs
3. Liver
4. Pancreas

Again, link the waste product to the organ!

Large intestine

Skin

Lungs

Kidneys

Carbon Dioxide

Other waste from blood

Undigested food

Salt

Water

Water

Water

Water

Salt

True or false: all the materials that leave the blood in the kidneys, are immediately disposed of via urine

And.. done!

• You have finished this lesson. 
• When you are done with your notes, please turn them in on SomToday (word document, picture, ...). You have the rest of the evening to do that (until 23.59)
• For the next lesson, please find the homework on SomToday. 
• Next biology lesson in your schedule, you will receive a message in SomToday again where you can find the powerpoint. Be prepared, as usual ;).