The Kidneys - Main Excretory Organs

FOCUS QUESTION: What are some of the systems in my body and how do they work?

CONTENT SUMMARY


The excretory system includes the kidney, bladder, skin and lungs. Substances that may be harmful to the body are removed through the excretory system.  
The main excretory organs are the kidneys. they are two in number and are bean-shaped. They produce urine .
The skin is the largest exterior excretory organ. It produces sweat, and regulates body temperature. 
The lungs take carbondioxide from the body.




This video clip will give you more information.

Watch this one is well.

EVALUATION:

Open this link and label the excretory system by dragging the mouse to label the organs.
       Label the diagram correctly.

Answer the questions below.

1.       Circle the odd word in each case.

(a)    Bladder    (b) urethra    (c) heart   (d) kidney    (e) ureter

Write the reason for your selection. ______________________________________________________________________________________________________________________________________________________

(b)   (i)  Skin   (ii) lungs    (iii) heart   (iv) kidney

Justify your answer.. ______________________________________________________________________________________________________________________________________________________

  

2.      Explain in simple scientific language what happens in the Excretory System.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________

 

3.   Give the functions of the following organs.

ORGANS                                                  FUNCTIONS

 Kidney

Ureter

Urethra

Bladder

4. Complete this fun quiz.