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Ch 24 – Urinary System, Part II

Ch 24 – Urinary System, Part II. Learning Objectives continued. Homework: Read pgs 876 – 882, 889 – 902. Review anatomical structures on labeling practices. 4?. 1?. 2?. 3?. Review: Urinary System. 5?. 2?. 3?. 4?. Review: Bladder. 1?.

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Ch 24 – Urinary System, Part II

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  1. Ch 24 – Urinary System, Part II Learning Objectives continued Homework: Read pgs 876 – 882, 889 – 902. Review anatomical structures on labeling practices.

  2. 4? 1? 2? 3? Review: Urinary System

  3. 5? 2? 3? 4? Review: Bladder 1?

  4. Roughly the size of a large bar of soap All About the Kidneys • Bean-shaped organs protected by last floating rib • Rt. kidney is slightly _____ than the left • Mass = __ oz • Average dimensions = 12cm long x 6cm wide x 3cm thick

  5. External Anatomy of Kidney Instructions: Label your practice diagram.

  6. Internal Anatomy of Kidney Instructions: Label your practice diagram. Note: Smooth muscle lines the walls of the calyces, pelvis, and ureters. Propels urine by peristalsis.

  7. Physiology of Kidney Structures Instructions: Match ‘em up! a. funnel-shaped tube that leaves via the hilum and is continuous with the ureter b. layer deep to the cortex which exhibits cone-shaped tissue masses c. areas that collect urine d. fibrous outer surface of kidney e. cleft; visible from external view of kidney • calyces • capsule • renal pelvis • medulla • hilum

  8. 4.Flows into the veins 1.Blood flows into the kidney via the renal a_________ 5. Veins flow blood out of the kidney through the renal _______ 2. Continues along other sub-arteries 3. Into arterioles and capillary beds (red) which then mix with venous arterioles and capillaries (blue) Blood Flow Through the Kidney

  9. Reflect Take a moment to retrace the flow of blood through the kidney beginning with the renal artery. Draw on your diagram below.

  10. 7.? 8.? 1.? 6.? 2.? 3. ? 5.? 4.? ReviewCan You Name the Structure?

  11. How Do Kidneys Filter? • Each kidney contains over 1 million tiny blood processing units called __________ • Fluid is carried along _____________ and conveys to the renal pelvis Nephrons, scanning electron micrograph nephron

  12. Basic Nephron Anatomy Label your practice diagram. Renal corpuscle

  13. Challenge Questions NOTE: There are two different types of nephrons (shown here). 1. What are the two types? (see diagram pg 882) 2. Where are they located? (pg 881) 3. What’s the most common type? (pg 881)

  14. Kidney Physiology • Approximately 1200ml of blood passes through the glomeruli each _________ • Of that, 650ml is ______ • This = filtering your entire plasma volume more than 60x/day • Of all the fluid filtered, less than 1% leaves the body as ________. Most of the filtered fluid (filtrate) is returned to the blood. See a nephron filter: http://video.google.com/videoplay?docid=-9053444201853192779&q=nephron&total=21&start=0&num=10&so=0&type=search&plindex=0

  15. Hormonal Influence on the Kidneys • _________ inhibits urine output. It is released more or less continuously unless the blood solute concentration drops too low. • It is enhanced by any event that raises the loss of plasma such as _________ • Results in ___________ urine

  16. Diuretics Instructions: With a partner, review “Diuretics” pg 899. Complete the following: • What are diuretics? • 2. List two examples of diuretics (one naturally occuring and one prescribed Rx) • a) • b)

  17. Concluding Discussion • Why might someone need a diuretic? http://video.google.com/videoplay?docid=7737641644947640414&q=leg+edema&total=39&start=0&num=10&so=0&type=search&plindex=0

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