Excretory System Notes

Excretory System

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• The main function is to _________________ blood and remove ________________ waste from the body.
• Works with the ___________________, ____________________, ____________________ and ____________________ systems to maintain a balance (_________________________) of water, ions pH, blood pressure, calcium and red __________________ cells in the body.

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Kidney

• Main function is to filter ________________ products out of the blood passing through them. Blood enters through renal __________________ and passes back to circulation through the renal _____________.
• Works with the _______________ system in the formation of red blood _____________ and the circulatory system to remove ______________ from the blood.

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Ureters

• Muscular _____________ that carry _______________ from the kidneys to the bladder.
• ________________ cm in length
• Inner diameter about ______________

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Bladder

• Pear shaped organ that holds ___________ to allow for urination to be infrequent and ____________________.
• Capacity - ______________________
• Emptying bladder takes place by _________________ of smooth _______________ (detrusor)

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© Kesler Science, LLC

Urethra

• Passageway through which ______________ is discharged from the ________________ out of the ________________.
• Longer in the male than _______________
• Average daily output of urine is __________________ liters/day.

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Accessory Organs

• Not part of the path of urine but play a part in removal of waste.
• Liver – filters blood from the _____________________ tract
• Lungs – remove ________________ _________________ (waste product) so it can be exhaled
• Skin – secretes a fluid waste called __________________ or perspiration

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Diseases/Disorders of the Excretory System

• Urinary tract ___________________ - UTI
• Kidney ____________________ - obstruction of the urinary ___________
• Cystic ________________ disorder
• _______________________ of the liver
• _______________________ failure
• Cancers of Kidney, bladder, ureter, prostate

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Hydration

• Water makes up half of your body _______________.
• You lose water when you go to the __________________, sweat, and ____________________.
• If you don’t replace the _____________ you lose you become _______________________.

Symptoms of dehydration

• Little or no ______________, or urine that is ______________ than usual
• _________________________ or fatigue
• Extreme __________________
• ______________________
• ______________________
• Dizziness

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© Kesler Science, LLC

Excretory System Notes