HLSC 2F95 NOV. 21.ppt - LECTURE 9 Digestive System Urinary System The Urinary System \u2022 \u2022 \u2022 \u2022 Functions Gross Anatomy Kidneys Bladder Functions

HLSC 2F95 NOV. 21.ppt - LECTURE 9 Digestive System Urinary...

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LECTURE 9 Digestive System Urinary System
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The Urinary System Functions Gross Anatomy Kidneys Bladder
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Functions of the Urinary System 1. Regulates plasma ion concentrations (Na + , K + , Cl + ) 2. Regulates blood volume & blood pressure 3. Helps to stabilize blood pH 4. Prevents the loss of valuable nutrients 5. Eliminates organic matter/waste 6. Synthesizes calcitriol (active form of vitamin D) 7. Prevents dehydration 8. Aids the liver with some of its functions (detoxifying poisons)
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Figure 26.1 Aorta Suprarenal gland Renal artery and vein Inferior vena cava Components of the Urinary System Kidney Produces urine Ureter Transports urine toward the urinary bladder Urinary Bladder Temporarily stores urine prior to elimination Urethra Conducts urine to exterior; in males, transports semen as well
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The Kidneys The Right Kidney Covered by the liver, hepatic flexure, and duodenum The Left Kidney Covered by the spleen, stomach, pancreas, splenic flexure, and jejunum Positioned higher than the right kidney Both capped with the suprarenal glands
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a Diaphragm Inferior vena cava Celiac trunk Right suprarenal gland Right kidney Hilum Rectum (cut) Urinary bladder Gonadal artery and vein Left common iliac artery Abdominal aorta Left ureter Superior mesenteric artery Left renal vein Left suprarenal gland Left kidney Left renal artery Diagrammatic anterior view of the abdominopelvic cavity showing the kidneys, suprarenal glands, ureters, urinary bladder, and blood supply to the kidneys Figure 26.3a
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Aorta Inferior vena cava Spinal cord Adipose tissue Pararenal fat Renal fascia Perinephric fat Fibrous capsule Connective Tissue Layers Protecting the Kidneys Left kidney Ureter Renal artery and vein Parietal peritoneum Stomach Pancreas Vertebra Spleen
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The Kidney Sectional anatomy Blood supply Nephron……..
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Sectional Anatomy of the Kidney Hilum Renal papilia Ureter Inner layer of fibrous capsule Renal sinus Renal pelvis Cortex Medulla Renal pyramid Connection to minor calyx Minor calyx Major calyx Renal lobe Renal columns Outer layer of fibrous capsule Figure 26.4a
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Sectional Anatomy of the Kidney Cortex Medulla Renal columns Outer layer of fibrous capsule Hilum Ureter Outer layer of fibrous capsule Renal pyramids Renal sinus Inner layer of fibrous capsule Renal pelvis Major calyx Minor calyx Renal papilla Renal lobe Figure 26.4a
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Structure of the Kidney Fig. 26- 4
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9.Renal vein 8.Interlobular veins 7.Arcuate ve 4. Arcuate arte 6. Interlobar veins 5. Cortical radiate arteries 3. Interlobular arteries 2.Segmental artery 1. Renal Artery Blood Supply to the Kidneys Fig. 26.5
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Interlobular vein Cortical radiate artery Arcuate vein Renal pyramid Glomerulus Afferent arterioles Juxtamedullary nephron Interlobar vein Interlobar artery Minor calyx Circulation in the renal cortex Cortical nephron Arcuate artery Fig. 26.5
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Fig. 26- 5 RENAL BLOOD SUPPLY SUMMARY Fig. 26.5
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Fig. 26.7 The Nephron: Structure & Function
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The Nephron Basic structural and functional unit of the kidney Renal tubule : long tubular passageway Main functions of the nephron: 1.
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