Urinary System

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Urinary System
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Comparing Excretion of Different Organisms

• http//www.youtube.com/watch?viG6Dd3COug4

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Comparing Excretion of Different Organisms
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Components
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Kidney
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Nephron
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Function of Nephron
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Filtration

• Blood enters nephron through afferent arteriole
• High blood pressure allows solutes in blood to
  pass through glomerulus and into Bowmans capsule

Solute Glomerulus Bowmans 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
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Reabsorption

• Active transport
• Passive transport

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Secretion
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Adaptations
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Unique Feature

• Conservation of water is sufficient that the
  animal does not need to drink water
• Obtains enough water as a product of respiration

Kangaroo Rat
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(No Transcript)
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Effects of ADH
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Regulating Blood Pressure
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Effects of Renin (enzyme)
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Kidney Stones
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Diabetes Mellitus
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Diabetes Insipidus
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Nephritis (Brights Disease)

• Inflammation of the kidney

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Quick Review
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Review Questions

• Pg.348 1-4
• Pg.352 1-6