The Excretory System

What is the main function of the Excretory System?

• To eliminate urea

• To eliminate H20

• To eliminate blood

• To eliminate saliva

The Kidneys keep in ______ and keep out ______.

• Urea and Waste

• Urea and H20

• Glucose and Urea

• Glucose and H20

• Glucose and Waste

How many Nephrons do you have inside each kidney?

• 500,000,000

• 50,000

• 6,000,000

• 1,000,000

Your Ureters are when Urine flows from the kidneys to the bladder

• True

• False

Your Urinary Bladder is a square like muscular organ that stores urine

• True

• False

Your Urethra is a very large tube where urine travels up to your liver

• True

• False

Your Liver is part of the Excretory System

• True

• False

What is the very first stage of the Excretory System?

• Blood enters kidneys and reaches cluster of capillaries in nephron

• When bladder is halfway full a signal is sent to brain telling your body to pee

• Urine slides down tubes called ureters into the bladder

What is the second stage of the Excretory System?

• Blood enters kidneys and reaches cluster of capillaries in nephron

• Capillaries in nephrons are surrounded by a capsule where urea, glucose and some water enter from the blood

• Some filtered materials, such as glucose and water are returned to blood, leaving urea and other waste products, called urine, in tube

What is the third stage of the Excretory System?

• Capillaries in nephrons are surrounded by a capsule where urea, glucose and some water enter from the blood

• Blood enters kidneys and reaches cluster of capillaries in nephron

• Some filtered materials, such as glucose and water are returned to blood, leaving urea and other waste products, called urine, in tube