Essentials of Human Anatomy & Physiology
Seventh Edition
Elaine N. Marieb
Chapter 15
The Urinary System
Slides 15.1 – 15.20
Lecture Slides in PowerPoint by Jerry L. Cook
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
___________ of the Urinary System
 Elimination of __________ products
 Nitrogenous wastes
 ___________
 __________
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Slide 15.1a
Functions of the Urinary System
 Regulate aspects of ______________
 ___________balance
 _____________
 Acid-base balance in the blood
 Blood ________________
 ____________ blood cell production
 Activation of vitamin ________
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Slide 15.1b
Organs of the Urinary system
 Kidneys
 Ureters
 Urinary bladder
 Urethra
Figure 15.1a
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Slide 15.2
Location of the Kidneys
 Against the ___________ body wall
 At the level of T12 to L3
 The right kidney is slightly ________
than the left
 Attached to __________, renal blood
vessels, and nerves at renal _________
 Atop each kidney is an ________gland
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Slide 15.3
______________ of the Kidneys
 Renal _____________
 Surrounds each kidney
 ____________ capsule
 Surrounds the kidney
 Provides ______________ to the kidney
 Helps keep the kidney in its correct location
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Slide 15.4
Regions of the Kidney
 Renal cortex –
outer region
 Renal medulla –
inside the cortex
 Renal pelvis –
inner collecting
tube
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Figure 15.2b
Slide 15.5
Kidney Structures
 Medullary _____________ – triangular
regions of tissue in the medulla
 Renal ____________ – extensions of
cortex-like material inward
 ___________ – cup-shaped structures
that funnel ___________ towards the
renal pelvis
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Slide 15.6
________________
 The structural and functional units of
the kidneys
 Responsible for ____________ urine
 Main structures of the nephrons
 ________________
 Renal tubule
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Slide 15.8
_________________
 A specialized
___________ bed
 Attached to
arterioles on both
sides (maintains
high pressure)
 Large _____________
arteriole
 Narrow ____________
arteriole
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Figure 15.3c
Slide 15.9a
Glomerulus
 The glomerulus
sits within a
glomerular capsule
(the first part of the
renal tubule)
Figure 15.3c
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Slide 15.9b
Renal Tubule
 Glomerular
(Bowman’s)
capsule
 Proximal
convoluted
tubule
 Loop of Henle
 Distal
convoluted
tubule
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Figure 15.3b
Slide 15.10
Urine Formation ______________
 ____________
 ____________
 ____________
Figure 15.4
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Slide 15.13
_______________
 Nonselective ____________ process
 Water and solutes smaller than
______________ are forced through
capillary walls
 _________and proteins cannot pass out
to the capillaries
 ___________ is collected in the
glomerular capsule and leaves via the
renal tubule
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Slide 15.14
____________________
 The peritubular capillaries reabsorb several
materials
 Some _________
 _______________
 __________ ________
 __________
 Some reabsorption is passive, most is active
 Most reabsorption occurs in the
________________convoluted tubule
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Slide 15.15
Materials __________ Reabsorbed
 Nitrogenous waste products
 __________
 __________ _______
 ________________
 Excess water
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Slide 15.16
Secretion – Reabsorption in
________________
 Some materials move from the
peritubular capillaries into the renal
tubules
 _____________ and __________ ions
 Creatinine
 Materials left in the renal tubule move
toward the ____________
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Slide 15.17
Formation of Urine
Figure 15.5
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Slide 15.18
Characteristics of Urine Used for
Medical Diagnosis
 Colored somewhat yellow due to the
pigment ________________ (from the
destruction of hemoglobin) and solutes
 ______________
 Slightly ______________
 Normal pH of around ___________
 Specific gravity of ________to _______
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Slide 15.19
_______________
 Slender tubes attaching the
___________ to the _____________
 Continuous with the renal pelvis
 Enter the posterior aspect of the bladder
 Runs ______________ the peritoneum
 ____________ aids gravity in urine
transport
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Slide 15.20