kidneys 2tto

• Biologie
• Middelbare school
• vwo
• Leerjaar 2

Paragraph 3.5: Taking out the 'rubbish'

This presentation can be studied on your own . At some points you will get questions, to be answered. If you get stuck, your teacher is available for help!

To introduce the lesson..

• To start,  study paragraph 3.5.
• 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. 
  
• Take notes during the video & when you read the paragraph
• Afterwards you will answer a few questions about the matter, to check if you have understood it.
• When you have completed all these assignments you can make the excercises from your workbook

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!

What is the definition of excretion

1. To absorb nutrients
2. To absorb waste products
3. To excrete nutrients
4. To excrete waste products

excretory organs

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

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.
• 
  

Anatomy

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

Physiology

Physiology = how the system works 

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)

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

Kidney diseases

• Bladder infection​
  
• Blockage of urethers or urethra​
  
• Kidney stones​
  

Dialysis​

Transplantation​

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

Which of the following parts is not found in the urinary system?​

1. Ureters​
2. Urethra​
3. Bladder
4. Rectum

What very important job do kidneys have?

1. To make urine​
2. To filter waste out of the body
3. All of the above
4. None

Urine is carried from the kidneys to the bladder by two thin tubes called:​

1. Urethers​
2. Tubulars​
3. Urethra
4. Urinary tracts

Urine exits the bladder and the body through a tube called the:​

1. Urethers
2. Tubulars
3. Urethra
4. Urinary tracts

If you pee is light or pale yellow, it means that:​

1. You are hydrated
2. you’re dehydrated
3. You don’t have enough yellow food dye in your diet​
4. You aren’t getting enough sun

And.. done!

• You have finished this lesson. 
• Start now with the excersises from your workbook