The Excretory System

Urine for a Great Time!!!

Engage Watch the following

video that shows thirty-seven -year old Dan Whitmore who has kidney failure. He has to spend three days a week attached to a dialysis machine. He’s on the waiting list for a kidney transplant.

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CONSTRUCT THE URINARY SYSTEM• You will make a model of the primary

components of their urinary system. Once finished with this activity you will be able to identify the structures, their functions and order the process of the urinary system through your model.

Kidney Filtration Simulation Activity• This lab activity that will simulate the overall

function of the kidneys

Explain Contributing Excretory Organs Liver

• removes hazardous chemicals from the blood.• "detoxifies" the blood• For this reason, alcoholics and other types of addicts have a

higher incidence of liver disease.

• Some proteins & other nitrogenous compounds are broken down in the liver forming a compound call urea

Lungs• excrete waste like carbon dioxide and water.

Skin • rids waste from the body through sweat glands

Kidneys

Feedback System: Temperature Regulation

How does the body keep from overheating?

On the other hand, how does the body keep warm?

Primary Urinary Organs

2 Kidneys

• Renal cortex (outer region)

• Renal medulla (inner region)

• Nephron: functional unit of kidney

Renal artery/vein: kidney blood flow

2- Ureters: urine excretory duct 1 - Urinary bladder: urine

storage 1 - Urethra: urine elimination

tube

Kidneys

Two reddish organs just above the waist behind the stomach

Filter the blood and removes waste

Ureter

Connects the kidneys to the urinary bladder

Urinary Bladder

Smooth muscle bag Stores waste solution - urine

Urethra

Connects bladder to outside of the body Allows urine to pass out of the body

Nephron

Filtering unit of the kidney

Blood enters full of waste and leaves filtered

Blood enters under high pressure and flows into the capillary beds

U-shaped Tubules (Loop of Henle)

Most of the ions and water

All of the glucose and amino acids

Reabsorbed into the bloodstream

This is how the body’s water is conserved

Homeostasis is maintained

The Human Kidney & Nephron

Elaborate

Exocrine/Endocrine Comparison Research ??????????

Exocrine/Endocrine System BINGO