Download Excretory and Urinary Systems

Excretory and Urinary Systems
What is the purpose of the excretory
system?
• To remove and eliminate waste from different
systems in your body!
– The urinary system is part of the excretory system,
and made up of excretory organs
• What are some examples from the
other human body systems?
– Digestive
– Respiratory
• What would happen if these wastes
were not eliminated?
What is the purpose of the urinary
system?
• Remove wastes from your
blood
– Wastes are produced from
using nutrients in your body
– Also removes excess water
and balances salt
concentrations
• Which body systems are
related to the urinary
system?
Organs of the urinary system
• Kidneys
– Nephrons
• Ureters
• Bladder
• Urethra
KIDNEYS
• Major organ of urinary system: 2 bean shaped
kidneys
• Filters blood that has collected waste from cells
– All of your blood passes through your kidneys
many times a day
• Each kidney contains around 1 million
nephrons
– Tiny filtering units
– Cup and duct
structure
URETERS, BLADDER
AND URETHRA
• Ureters:
– Tubes that lead from kidney to the
bladder
• Bladder:
– Elastic muscular organ that holds urine until
it leaves the body
• Urethra:
– Tube that carries urine from
bladder to outside of your body