The Urinary System The Urinary System (Excretory System)(Excretory System)

Aim: How can we describe the Aim: How can we describe the functions of the Urinary System?functions of the Urinary System?

DO NOW• If you could ask a question to any

doctor about the urinary system, what would you ask and why? WRITE DOWN YOUR QUESTION!

• Discuss your questions with your group members.

• You have 3 MINUTES!!

Functions of the Excretory System

• Excretory means: the removal of waste from the body.

• The digestive, urinary, respiratory and skin make up your excretory system.– Digestive= Waste from your intestines (poo)– Urinary= Waste from your kidneys (urine)– Respiratory= Waste gases (CO2)– Skin= Salts eliminated through sweat.

The Urinary System• The Kidneys, which

filter wastes from the blood, are the major organs of the urinary system.

• Urine moves from the kidneys through the ureters, into the bladder, then leaves the body through the urethra.

Urinary Diseases and Disorders

• Kidney failure can lead to a buildup of waste products in the body.

• An artificial kidney can be used to filter the blood in a process called dialysis.

Important Vocabulary

• Ureter: Tubes that lead from each kidney to the bladder.

• Bladder: an elastic muscular organ that holds urine until it leaves the body. Can hold up to 0.5 Liters of urine.