Year 4. Unit 3. How our body works: The excretory system

 

How many kidneys do you have?

- We have two kidneys.

What do they do?

They filter the blood and reabsorb useful nutrients.

How many bladders do you have?

- We have one bladder.

What happens in the bladder?

- The urine is stored in the bladder.

Let's watch this video to learn more about the excretory system!

a. Our kidneys filter our blood.

b. Urine is made in our kidneys from waste substances mixed with water.

c. Urine collects in our bladder until we go to the toilet and expel it.

d. Urine leaves our body through the urethra.

 

1. Read the information in the post.

2. Watch the video.

3. Complete activity 1 (page 11, activity book).