Download - Notes urinary system
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Make Interactive Notes
• Staple 6 pg binder paper to cover• Number pages• Cover: Chapter 18 and 19
Urinary and Reproductive SystemsName, period, Seat #Color drawing
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Notes: Urinary System (pg 2)
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Notes: Urinary System (pg 2)
• Function: maintain the volume and composition of body fluids within normal limits
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Notes: Urinary System (pg 2)
• Function: maintain the volume and composition of body fluids within normal limits– Rids body of waste (excretion)
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Notes: Urinary System (pg 2)
• Function: maintain the volume and composition of body fluids within normal limits– Rids body of waste (excretion)– Maintains appropriate fluid volume
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Notes: Urinary System (pg 2)
• Function: maintain the volume and composition of body fluids within normal limits– Rids body of waste (excretion)– Maintains appropriate fluid volume – Regulates pH and concentration of electrolytes
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Notes: Urinary System (pg 2)
• Function: maintain the volume and composition of body fluids within normal limits– Rids body of waste (excretion)– Maintains appropriate fluid volume – Regulates pH and concentration of electrolytes– Produces hormones erythropoietin (involved in
red blood cell production) and renin (maintains blood pressure)
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Components of Urinary System
• Kidneys, ureters, urinary bladder, urethra
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Components of Urinary System
• Kidneys, ureters, urinary bladder, urethra• Kidneys filter the blood and form the urine.
The rest of the components alllow urine to exit the body.
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Ureters
• Slender tubes 25-30 cm long that carry urine from the kidneys to the bladder
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Urinary Bladder
• Smooth, collapsible, muscular sac that stores urine until it is convenient to release it
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Urinary Bladder• Smooth, collapsible, muscular sac that stores
urine until it is convenient to release it• Lining is transitional epithelium, a special
tissue that is capable of stretching
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Urinary Bladder
• Smooth, collapsible, muscular sac that stores urine until it is convenient to release it
• Lining is transitional epithelium, a special tissue that is capable of stretching
• Empty bladder is only 5 cm long. Full bladder can be over 20 cm long and hold 2 pints
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Urethra
• Thin walled tube that carries urine from the bladder to the outside of the body
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Urethra
• Thin walled tube that carries urine from the bladder to the outside of the body
• Females: 3-4 cm long, Males: 20 cm long
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Urethra
• Thin walled tube that carries urine from the bladder to the outside of the body
• Females: 3-4 cm long, Males: 20 cm long• Shorter urethra makes females much more
susceptible to urinary tract infections
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Kidneys
• Located between 12th thoracic and 3rd lumbar vertebrae on posterior abdominal wall. Partially protected by lower ribs
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Kidneys
• Located between 12th thoracic and 3rd lumbar vertebrae on posterior abdominal wall. Partially protected by lower ribs
• Bean shaped. 6 cm wide 12 cm long
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Output (pg 3)
• Label the components of the urinary system
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Characteristics of Urine (pg 2)
• Urine contains nitrogenous waste (urea) that is a byproduct of cellular metabolism and other unneeded substances
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Characteristics of Urine (pg 2)
• Urine contains nitrogenous waste (urea) that is a byproduct of cellular metabolism and other unneeded substances
• Yellow color is due to urochrome, a pigment from the breakdown of hemoglobin
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Characteristics of Urine (pg 2)
• Urine contains nitrogenous waste (urea) that is a byproduct of cellular metabolism and other unneeded substances
• Yellow color is due to urochrome, a pigment from the breakdown of hemoglobin
• Usually slightly acidic (pH around 6).
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Dialysis
• Diabetes, hypertension, and aging can cause kidneys to lose function or fail
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Dialysis
• Diabetes, hypertension, and aging can cause kidneys to lose function or fail
• Dialysis uses an artificial kidney to filter the patient’s blood. 3 times per week for 4 to 8 hours each time.