Presentation is loading. Please wait.

Presentation is loading. Please wait.

Chapter 20 Urinary System.

Similar presentations

Presentation on theme: "Chapter 20 Urinary System."— Presentation transcript:

1 Chapter 20 Urinary System

2 Function Waste removal Maintains water and electrolyte balance
Regulates pH

3 Structure 2 Kidneys Reddish brown Bean shaped
Lateral to vertebral column Structure Cortex – outer edge Medulla – internal tissue containing nephrons Nephrons – tiny tubules that allow kidneys to function

4 Structure Continued

5 Structure Continued 2 Ureters – tube from each kidney to the bladder
Bladder – holding tank Urethra – tube to the outside of the body

6 Urine Formation Nephrons Regulate water and electrolyte concentrations
Remove waste from the blood

7 Urine Formation Continued
Urine Content Not Found in Plasma Urea – breakdown of amino acids Uric Acid – by product of amino acid metabolism High sulfate High phosphate *All glucose is supposed to get reabsorbed *95% water

8 Water Intake Water Output
30% = moist food 10% = metabolism Regulated by thirst Hypothalamus Water loss = increase in extracellular osmotic pressure Thirst occurs at 1% of total body (or when the body is dehydrated by 1%) 60% = urine 6% = feces 6% = sweat 28% = evaporation from skin/breathing Regulated by urine production ADH (antidiuretic hormone) present

9 Electrolyte Intake Electrolyte Output Food Beverages Metabolic reactions Salt cravings Sweat Feces Kidney and urine production Hormone aldosterone (controls water excretion)

Download ppt "Chapter 20 Urinary System."

Similar presentations

Ads by Google