Excretory System

The body has how many kidneys?

• 1

• 2

• 3

• 4

What two waste products are excreted through your skin when you sweat? Select all that apply.

• Water

• Salt

• Feces

• Blood

Urine flows from the

• bladder to the kidneys

• kidneys to the bladder

• stomach to the kidneys

• urethra to the bladder

Which word best describes the function of the nephrons?

• Tube

• Stores

• Filter

• Collects

What is the main function of your excretory system?

• to break down food

• to create insulin

• to get rid of waste products from your cells

• to circulate your blood

Urine is stored in the _________ before it is pushed out of the body.

• bladder

• liver

• kidney

• heart

Which event occurs first?

• urine passes through the ureters

• urine is stored in the bladder

• blood enters the kidneys

• urine enters the urethra

Which event occurs second?

• urine passes through the ureters

• urine is stored in the bladder

• blood enters the kidneys

• urine enters the urethra

Which event occurs third?

• urine passes through the ureters

• urine is stored in the bladder

• blood enters the kidneys

• urine enters the urethra

Which event occurs last?

• urine passes through the ureters

• urine is stored in the bladder

• blood enters the kidneys

• urine enters the urethra