57 Kidneys Basic Structure & Fxn

57 Kidneys Basic Structure & Fxn - I.e. Drugs, food...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Outline - Fxns of renal system - Structure of the renal system - Overview of formation of urine Fxns of renal system - Homeostasis - Excretion - Hormonal 1. Homeostasis a. Fluid balance - Maintenance of water balance = leads to maintenance of proper osmolarity - Maintenance of proper plasma volume: if V ECF BP = inadequate blood ±ow to b. Ionic composition - Keeps [key ions] w/i normal range by balancing dietary intake w/ urinary output - Key ions: Na + , K + , Ca ++ , Mg ++ , Cl - , HCO 3 + , SO 4 - , PO 4 - c. pH regulation - pH determined by [H + ] - If ECF becomes too acidic = kidneys remove H + 3 - ions (acts as buffer) - When ECF becomes too alkaline = kidneys remove HCO 3 - + 2. Excretion a. Of end products of body metabolism - I.e. Urea, uric acid, creatinine, urobilirubin b. Of many foreign compounds -
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: I.e. Drugs, food additives (articial sweetener & anion benzoate), pesticides, etc. 3. Hormonal a. Secretes erythropoietin b. Secretes renin-angiotensin c. Vitamin D activation Structure of the renal system PSL302: Lecture 57, by Perumalla Wed. Mar. 9, 2011 1 of 4 Structure of the kidney Renal Artery Renal Vein Ureter Renal Pelvis-Kidneys receive ~20% cardiac output-Kidneys weigh <1% body weight but utilize 16% of ATP usage in body! PSL302: Lecture 57, by Perumalla Wed. Mar. 9, 2011 2 of 4 Vascular element of the nephron Overview of formation of urine-Three basic renal processes are involved in the formation of urine 1. Glomerular Fltration 2. Tubular reabsorption 3. Tubular secretion PSL302: Lecture 57, by Perumalla Wed. Mar. 9, 2011 3 of 4 PSL302: Lecture 57, by Perumalla Wed. Mar. 9, 2011 4 of 4...
View Full Document

Page1 / 4

57 Kidneys Basic Structure & Fxn - I.e. Drugs, food...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online