7 1 point Ultimately, it is the net filtration pressure in the renal corpuscle that determines if glomerular filtration can occur. Because the net filtration pressure is typically positive, water (and solutes) typically choose your answer... ? the glomerulus.
Added by Laura W.
Close
Step 1
Step 1: The net filtration pressure is the difference between the hydrostatic pressure in the glomerular capillaries and the hydrostatic pressure in the Bowman's capsule. Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 55 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Glomerular filtration occurs when plasma passes through these three layers from the blood and into the tubular component of the nephron. This movement is passive and largely based on pressure and diffusion gradients. Three major pressure forces within the system affect the direction filtration occurs. For each of these forces, select whether it favors or opposes filtration into the tubular component, and enter the average magnitude of that pressure. Then, select what the combined results of these forces are on the net filtration pressure. Force Effect Magnitude (mm Hg) Glomerular capillary blood pressure Opposes filtration Plasma-colloid osmotic pressure Favors filtration Bowman's capsule hydrostatic pressure Opposes filtration Net filtration pressure Favors filtration From the relative magnitude of each of these forces, it is clear that glomerular capillary blood pressure is the major force that drives glomerular filtration. The rate at which filtration occurs through these three filtration layers is known as the glomerular filtration rate (GFR). Ideally, the plasma-colloid osmotic pressure should not be affected by changing any of the three pressure forces affecting glomerular filtration. Bowman's capsule hydrostatic pressure and glomerular capillary blood pressure are regulated by the nervous system, which will in turn regulate the GFR.
Adi S.
Glomerular filtration rate (GFR) is influenced by the number of pressures occurring on either side of the filtration membrane in the glomerulus. Remember that filtration occurs when pressure forces fluid and solutes through a semipermeable barrier, with solute movement constrained by particle size. Glomerular filtration occurs when the glomerular blood hydrostatic pressure (GBHP) exceeds the opposing pressures: the capsular hydrostatic pressure (CHP) within the glomerular capsule, which pushes against filtration, as well as the blood colloid osmotic pressure (BCOP) of the blood in the glomerulus, which pulls fluids back into the glomerulus. The net filtration pressure (NFP) is the force producing urine and can be explained by the following formula: NFP = GBHP - (CHP + BCOP) Use available models, the images supplied from your textbook and/or your Practice Atlas for Anatomy and Physiology, to identify the following structures: 1. Filtration 2. Glomerular blood hydrostatic pressure 3. Blood colloid osmotic pressure 4. Capsular hydrostatic pressure
Madhur L.
Outline the factors that contribute to, and negate, glomerular filtration. A complete response should include: the anatomical/histological features of the Renal Corpuscle that mediate filtration, a comprehensive review of the features that contribute to net filtration pressure (from the equation), and a comparison of the biochemical properties of molecules that filter readily versus those that are not commonly filtered.
Sri K.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD