today’s agenda return papers primary components of the urinary system –via video (partial)...
TRANSCRIPT
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Today’s Agenda
• Return Papers
• Primary Components of the urinary system– Via video (partial)
• Kidney Anatomy– External features – Internal features
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Work of the Kidneys (video)
Listen for the functions of the urinary system
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Excretory System Function• 1. Collect water and filter body fluids
• 2. Remove & concentrate wastes to maintain homeostasis
• Eliminate excretory products from the body
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1 = urethra
2 = ureter
3 = bladder
4 = kidney
Urine pathway is:
4,2,3,1
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1 = ureter
2 = renal pelvis
3 = cortex
4 = medulla
5 = renal pyramid
6 = renal column
7 = renal papillae
8 = renal calyx
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5
2
8
1
4
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Day 2• Go back over the gross antomy of the
excretory system• Obj. 2 trace flow of blood through excretory
(fill in two diagrams in note packet and color the second one showing renal blood vessels)
Obj. 3 parts of the nephronPractice obj. 3Quiz over nephron anatomy (with word bank on
board)
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Excretion Unit Day 3
While we may not be able to control all that happens to us, we can control what happens
inside us.Ben Franklin
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Day3
1. Recap and then obj. 5, 6, 7 notes
2. Review the parts of the nephron via group work labeling at lab stations. Complete kidney coloring at lab stations
3. Notes on Objectives 9-12
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Adam’s excretion
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Blood flows to the kidney to be filtered forming 125 ml of filtrate per minute (48 gallons/day)
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Obj. 5, See transparency—filtration, resorption, concentration
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Obj. 6 Aldosterone
• Hormone made by the adrenal gland
• Causes sodium and water to be resorbed (kept in body)
• Aldosterone, along with atrial natriuretic factor and antidiuretic hormone regulate sodium and water in the urine.
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Obj. 7 Urine Concentration
• The more water that is excreted, the more dilute the urine will be.
• Diuretics increase the amount of water in the urine.
• Diuretics include chemicals such as caffeine and nicotine increase urine output by affecting Na absorption. Alcohol suppresses ADH.
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Move to lab area and complete the labeling of the nephron and its
associated blood vessels.
Turning in one per group…be careful in labeling.
Finish coloring kidney if needed.
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Composition of plasma, nephric filtrate, and urine (each in g/100 ml of fluid). These are representative values. The values for salts are especially variable, depending on salt and water intake.
ComponentPlasma
Nephric Filtrate
Urine
Concentration
% Reclaim
edUrea 0.03 0.03 1.8 60X 50%
Uric acid0.00
40.004 0.05 12X 91%
Glucose 0.10 0.10 None - 100%
Amino acids 0.05 0.05 None - 100%
Total inorganic salts 0.9 0.9<0.9-3.6
<1-4X 99.5%
Proteins and other macromolecules
8.0 None None - -
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Obj. 9 Abnormal Urine Components
• Glucose ---- diabetes
• Albumin protein---injury or infections
• White blood cells---infection
• Red blood cells----infection, trauma
• Bacteria---infection
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Lithotripsy machine to shatter kidney stones with sound waves
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Excretion Unit Day 4
Don’t carry a grudge. While you’re carrying the grudge, the other guy’s out
dancing.Buddy Hackett
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Today’s Agenda
• Urinalysis prelab–Safety precautions–procedures
• Urinalysis lab• Stop & clean up
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Objective 10
• URETERS--slender tubes
• 10-12 inches long
• convey urine from kidney to bladder.
• Peristalsis moves the urine
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Objective 10 continued
• Renal calculi or kidney stones may obstruct the ureters.
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Objective 11 Urinary Bladder
• Smooth collapsible, muscular sac.
• Trigone--outlines the three openings. (2 ureteral, one urethral)
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Objective 12: Urethra
• Thin walled, muscular tube that drains urine from the bladder.
• (see Diagram)
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Objective 4
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Uric Acid stone
Calcium oxalate & blood
Limit stones by drinking water and limiting caffiene
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