1 / 18

Urinary System

Urinary System. Introduction. Ammonia (NH 4 ). As proteins and nucleic acids are catabolized , nitrogenous wastes , including ammonia, are produced in all animals. NH4 is water-soluble, a strong base, and can change the pH of blood. It must be eliminated!. How is NH 4 eliminated?.

addo
Download Presentation

Urinary System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Urinary System Introduction

  2. Ammonia (NH4) • As proteins and nucleic acids are catabolized, nitrogenous wastes, including ammonia, are produced in all animals. • NH4 is water-soluble, a strong base, and can change the pH of blood. • It must be eliminated!

  3. How is NH4 eliminated?

  4. How is NH4 eliminated?

  5. Organs Kidneys– Produce Urine Ureters– Transport Urine Urinary Bladder– Stores Urine Urethra– Transports Urine

  6. Functions • Primary Functions • Eliminate metabolic wastes • Regulate blood volume • Regulate blood chemistry • Secondary Functions • Metabolism of Vitamin D • Production of renin • Production of EPO

  7. Urinary System Kidneys

  8. Location • Superior lumbar region • Lie behind the peritoneum • Right kidney sits lower than left …why? • ~size of a large bar of soap

  9. Exterior Structures • Adrenal glands- endocrine organs that secrete • Aldosterone • Cortisol • Epinephrine • Norepinephrine • Other Hormones

  10. Renal hilus– medial indentation that includes pathway for ureters, renal artery, renal vein, and nerves

  11. Renal Capsule– fibrous, transparent structure on kidney surface • Adipose Capsule– surrounds kidney and holds it in position • If the amount of fatty tissue declines, the kidney’s may drop to a lower position, a condition called ptosis • Ureters becomes kinked and the urine backs up, exerting pressure on the kidney

  12. Internal Structures • Renal Cortex– superficial portion; urine formation • Renal Medulla– deep to cortex • Renal Columns– extensions of cortex • Medullary pyramids– stripes are due to collecting ducts • Base – points toward cortex • Apex/Papilla – point medially

  13. Renal Pelvis– funnel shaped tube; continuous with ureter • Calyces– cup-shaped extensions of the pelvis that enclose the tips of the pyramids

  14. Glomerulus– ball of capillaries; site of filtration • Peritubular Capillaries– Site of reabsorption and secretion

  15. Blood Flow to the Kidneys

  16. Lobe of the kidney

  17. Formed in the renal cortex Travels thru the collecting ducts in the renal medulla Drips out of the renal papillae into the minor calcyes Flows thru the major calyces Flows thru the urethra Flows thru the renal pelvis Flows thru and is stored in the urinary bladder Flows thru the ureter Urine Flow from the Kidneys

More Related