DIAG 2735 The Urinary System

DIAG 2735 The Urinary System - The Urinary System Functions...

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The Urinary System
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Functions of the Kidneys Filter nearly 200 L of fluid from bloodstream Return needed substances back to body Regulate the volume and chemical makeup of the blood (maintaining pH, water and salt concentrations) Production of renin and erythropoietin Metabolizing vitamin D to its active form
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Gross Anatomy Kidneys : two bean-shaped organs that filter blood Ureters : two tubes that drain urine away from the kidneys Urinary Bladder : stores urine until micturition occurs; composed of transitional epithelium to allow for stretching Urethra : drains urine from bladder and transports it outside; in females, only carries urine; carries urine and semen in males
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Gross Anatomy Two Kidneys Two Ureters Urinary Bladder Urethra
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External Kidney Anatomy Located in a retroperitoneal position Renal Hilus : region where ureters, renal blood vessels, lymphatics, and nerves all join together and exit/enter kidney Connective Tissue Layers Renal Capsule (prevents spread of infection) Adipose Capsule (fatty mass for shock absorbtion) Renal Fascia (outer layer that anchors kidney to surrounding areas)
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Internal Kidney Anatomy Renal Cortex Renal Medulla With renal pyramids Renal columns Renal Pelvis With major calyces and minor calyces
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Decrease in B/P causes release of renin by JG cells in kidney. Renin cleaves angiotensin (made in liver) to Angiotensin I. Angiotensin I is cleaved in lungs by ACE to
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This note was uploaded on 11/23/2011 for the course DIAG 2735 taught by Professor Josephr.forese during the Winter '11 term at Life Chiropractic College West.

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DIAG 2735 The Urinary System - The Urinary System Functions...

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