chapter19a The Kidneys 1

chapter19a The Kidneys 1 - Chapter 19a The Kidneys About...

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Unformatted text preview: Chapter 19a The Kidneys About this Chapter • Anatomy of the urinary system • Overview of kidney function • Homeostasis • pH • Electrolytes • fluid • Filtration • Reabsorption • Secretion • Excretion • Micturition Functions of the Kidneys • Regulation of extracellular fluid volume and blood pressure • Regulation of osmolarity • Maintenance of ion balance • Homeostatic regulation of pH • Excretion of wastes • Production of hormones Figure 19-1a Kidney Ureter Urinary bladder Urethra (a) The urinary system THE URINARY SYSTEM Anatomy: The Urinary System Figure 19-1b Ureter Diaphragm Aorta Inferior vena cava Right kidney Left kidney Renal artery Renal vein (b) The kidneys are located retroperitoneally at the level of the lower ribs. Urinary bladder Peritoneum (cut) Rectum (cut) Left adrenal gland Anatomy: The Urinary System Figure 19-1c Cortex Medulla Renal pelvis Ureter Capsule (c) The kidney, in cross section. Nephrons Anatomy: The Urinary System Polycystic kidney Figure 19-1i Cortex Medulla Arterioles Nephrons (i) Some nephrons dip deep into the medulla. Anatomy: The Urinary System Figure 19-1g–h Glomerulus (capillaries) Peritubular capillaries Juxtaglomerular apparatus (g) One nephron has two arterioles and two sets of capillaries. Efferent arteriole Afferent arteriole (h) Juxtamedullary nephron with vasa recta Glomerulus Peritubular capillaries Vasa recta Loop of Henle Collecting duct Anatomy: The Urinary System Figure 19-1d–e Anatomy: The Urinary System Figure 19-1f...
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This note was uploaded on 01/03/2012 for the course BIO 308 taught by Professor Acbrown during the Spring '10 term at Portland.

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chapter19a The Kidneys 1 - Chapter 19a The Kidneys About...

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