chapt23 v0806 Urinary(1)

chapt23 v0806 Urinary(1) - Chapter 23 The Urinary System...

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1 Chapter 23 The Urinary System The story of your Kids
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2 Urinary system consists of 2 kidneys (kids), each kid has a pipe called the ureter that connects to the bladder, the release hose from the bladder is called the ______ Franklin Two kidneys Two ureters Urethra Bladder
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3 Kidney Location The kidneys are kidney bean shaped, or… About the size of your fist Retroperitoneal - Found posterior to the peritoneum of the abdominal cavity, Right kid lower then left, Why? Eleventh and twelfth rib partially covers them
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4 The Urinary System The URINary system’s major job is to produce- URINe Urine is created from the kids filtering the blood, the result is a sterile waste product called urine Nephrology (Kidney Study)- is the study of the pathology of the kidneys Urology (urine study)- study of the male and female urinary system and the male reproductive system
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5 Kidney Functions We will concentrate on the kids ability to form u rine but they do other things as well: D etoxifies free radicals and drugs G luconeogenesis- regulates blood sugar p H by regulating H+ and bicarbonate ions E lectrolytes regulation in the blood - Na+, K+, Ca++ E rythropoietin secretion B lood pressure regulation- two ways by Renin hormone and Renal resistance F luid balance- both osmolarity and blood volume by regulating water in the blood Drunk Guys pEE Behind Fences
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6 Nitrogenous Wastes Kidneys filter blood plasma, returns useful substances to blood and eliminates waste Urea – proteins amino acids NH 2 removed forms ammonia NH3, liver converts to urea Uric acid nucleic acid catabolism Renal failure azotemia: BUN (Blood Urea Nitrogen), nitrogenous wastes in blood uremia: toxic effects as wastes accumulate
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7 Anatomy of Kidney A sliced kidney reveals two parts: 1.) Renal cortex- outer area 2.) Renal medulla- inner area renal columns, pyramids, papilla Additional anatomy: Renal Capsule- sausage covering Hilus- pushed in center spot where blood vessels, lymphatic vessels, nerves and ureter penetrate the kidney
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8 Flow- Urine’s Journey The parenchyma of the kidney contains functional units (about one million) called: Nephrons- forms urine that passes to- Collecting ducts- these guys go to the point of the pyramids, then urine flows to:
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9 Of Minors and Majors Minor calyces to the major calyces- funnel like structures that drain the urine to: Renal pelvis- large basin that collects the urine and sends it to the ureter to the urinary bladder
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10 Blood Supply to the Kidneys I Renal artery- main artery entering the renal hilus Renal vein- main vein exiting the kidney Interlobar vessels- pass through the renal columns between the pyramids Arcuate vessels- “ARC” around the distal end of the pyrimids The arcuate vessels send out interlobular vessels that go into the cortex
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11 Blood Supply to the Kidneys II Each nephron receives one afferent arteriole, which divides into a:
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chapt23 v0806 Urinary(1) - Chapter 23 The Urinary System...

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