'Afferent arteriole' presentation slideshows

The Urinary System

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Chapter 26 The Urinary System

Chapter 26 The Urinary System. Albert Grazia, M.S., N.D. (516) 486-8332 www.naturedoc.info. Chapter 26 The Urinary System. Kidneys, ureters, urinary bladder & urethra Urine flows from each kidney, down its ureter to the bladder and to the outside via the urethra

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PHYSIOLOGY OF THE RENAL SYSTEM

PHYSIOLOGY OF THE RENAL SYSTEM. Fredirick L Mashili, MD, PhD. DEPARTMENT OF PHYSIOLOGY, MUHIMBILI UNIVERSITY OF HEALTH AND ALLIED SCIENCES (MUHAS). CONTENTS. Kidney functions Structure of the kidney Vascularization of the kidney Juxtaglomerular apparatus Glomerular filtration

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Podocytes

Podocytes. Podocytes . the filtration barrier = an amazing structure filtering something like 200-500 l plasma per day and producing something like 200 l of primary urine

1.37k views • 66 slides

Chapter 26 The Urinary System

Chapter 26 The Urinary System. Kidneys, ureters, urinary bladder & urethra Urine flows from each kidney, down its ureter to the bladder and to the outside via the urethra Filter the blood and return most of water and solutes to the bloodstream. Overview of Kidney Functions.

849 views • 52 slides

Chapter 26 The Urinary System

Chapter 26 The Urinary System. Kidneys, ureters, urinary bladder & urethra Urine flows from each kidney, down its ureter to the bladder and to the outside via the urethra Filter the blood and return most of water and solutes to the bloodstream. Overview of Kidney Functions.

592 views • 52 slides

Urinary System

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URINARY SYSTEM

URINARY SYSTEM. KIDNEYS AND URETERS. 1- Describe the normal site, size, shape and position of the kidney 2- Delineate the surface anatomy of the kidney 3- Describe the facsia surrounding the kidney 4- Describe the blood supply of the kidney

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Osmoregulation

Osmoregulation. Controlling the Internal Environment. terms. Hypertonic: exo-smosis Hypotonic: endosmosis These have led to structural adaptations and physiological adaptations in order to maintain the balance of water and solutes.

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The Urinary System Part A

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Objectives of lesson

Chapter 32 - Excretion The Nephron as a Unit of Kidney Function. Objectives of lesson. Outline the structure & associated blood supply & draw a diagram of the nephron.

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Filtration

Filtration. Figure 19-8b. Filtration. Figure 19-8c. GFR Regulation. Myogenic response Similar to autoregulation in other systemic arterioles

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Lecture 18 The Urinary System

Lecture 18 The Urinary System. 5 Functions of the Urinary System. Regulate blood volume and blood pressure: by adjusting volume of water lost in urine releasing erythropoietin and renin Regulate plasma ion concentrations:

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ANA 812

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Kidney: The tubular part of the nephron: -proximal convoluted tubule -loop of Henle

Kidney: The tubular part of the nephron: -proximal convoluted tubule -loop of Henle -distal convuluted tubule with macula densa Urinary bladder Female Reproductive System. Review renal corpuscle The proximal convoluted tubule: -simple cuboidal epi.

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Renal Blood Flow

Renal Blood Flow. Total renal blood flow: TRBF ~ 1270 ml/min ~ 20-25% of CO (5000 ml/min) ~ 90% to cortex Total renal plasma flow: TRPF ~ 700 ml/min (Hct ~ 0.45) Filtration fraction ~ 20% (GFR = 125 / 700 ml/min) The low medullary flow is due to high resistance of the vasa recta.

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Control and regulation of GFR and renal blood flow

Control and regulation of GFR and renal blood flow. Sympathetic nervous system activation _decreases_ GFR . Strong activation of renal sympathetic nerves can constrict the renal arterioles and decrease renal blood flow and GFR. Only strong activation due to brain ischemia or hemorrhage.

760 views • 16 slides