Transcript Urinary System_student handout[1].

Urinary System
Comparing Excretion of Different
Organisms
• http://www.youtube.com/watch?v=iG6Dd3CO
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Comparing Excretion of Different
Organisms
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Kidney
Nephron
Function of Nephron
Filtration
• Blood enters nephron through
afferent arteriole
• High blood pressure allows
solutes in blood to pass through
glomerulus and into Bowman’s
capsule
Solute
Glomerulus
Bowman’s capsule
Water
Y
Y
NaCl
Y
Y
Glucose
Y
Y
Amino acids
Y
Y
H+ ions
Y
Y
Plasma proteins
Y
N
Erythrocytes
Y
N
Platelets
Y
N
Reabsorption
Active transport
Passive transport
Secretion
Adaptations
Unique Feature
Kangaroo Rat
• Conservation of water is sufficient that the animal does
not need to drink water
– Obtains enough water as a product of respiration
Effects of ADH
Regulating Blood Pressure
Effects of Renin (enzyme)
Kidney Stones
Diabetes Mellitus
Diabetes Insipidus
Nephritis (Bright’s Disease)
• Inflammation of the
kidney
Quick Review
Review Questions
• Pg.348 #1-4
• Pg.352 #1-6