6th Natural Science. The excretory system review.

The excretory system consists of the ______ and the ______.

• urinary system/sweat glands

• kidneys/urine

• ureters/renal

The ______ arteries carry blood to the kidneys.

• renal

• ureters

• bladder

The ______ eliminate water and waste products from the blood. This combination of water and harmful substances forms ______.

• kidneys/urine

• ureters/bladder

Urine leaves the kidneys and passes down through two tubes called the _______ to the bladder.

• ureters

• bladder

• renal

When the _______ is about half-full, it sends signals to the brain that is needs to be emptied. This is when you want to go to the toilet!

• bladder

• urine

• kidney

The bladder is emptied by another tube called the _______.

• urethra

• bladder

• renal