Excretory System

Waste + ____________ = pee / urine

True or False. The bladder collects blood.

It is good to hold our pee and wait a long time before going to the toilet?

How many urethras do we have?

What are these? N E S K D I Y

What is this? A E R D B L D

True or False. The kidneys clean the water.

Urine is a waste product. Yes or No ?

How many kidneys do we have?

What are these two tubes? R T U E E R S

Does urine go down from the ureters to the bladder and finally down to the ________.