Why does increasing pore size increase filtration rate?
The increase in pore size increased the filtration rate because more filtrate was allowed to go through the membrane. An analogy to this is if you imagine a wall that initially had a small gate that allowed only some people through, making the rate of the transport of people slow.
Which of the following is required for filtration quizlet?
Which of the following is required for filtration? Both a membrane and a hydrostatic pressure gradient are required.
How can you increase the filtration rate through living membranes?
The best way to increase the filtration rate in living membranes would be to increase the pressure applied. The powdered charcoal had the largest molecular weight because it was not able to pass through the filtration membrane.
Which of the following would result in no change in osmotic pressure?
Which of the following would result in NO change in osmotic pressure across a membrane? The solutes can diffuse through the pores and the concentration of solutes is the same on both sides of the membrane.
What factors influence the rate of glomerular filtration quizlet?
Factors that affect the glomerular filtration are glomerular hydrostatic pressure, glomerular colloidal osmotic pressure, and the hydrostatic pressure in the Bowman's capsule.
How does pore size affect diffusion?
Relative to the respective diffusion coefficients obtained in bulk phases, we observe a reduction in the diffusion coefficient that is independent of pore size for the larger pores and becomes stronger toward the smaller pores.
What conditions increase glomerular filtration pressure quizlet?
The stretching of the afferent arteriole walls leads to increased constriction of the afferent arteriole. Activation of the macula densa cells leads to an increased glomerular filtration rate. Increased glomerular filtration rate leads to paracrine secretion from the macula densa.
What is required for filtration?
The basic requirements for filtration are: (1) a filter medium; (2) a fluid with suspended solids; (3) a driving force such as a pressure difference to cause fluid to flow; and (4) a mechanical device (the filter) that holds the filter medium, contains the fluid, and permits the application of force.
What effect will increasing the pore size of the filter have on the filtration rate?
Your answer: Increasing the pore size increases the filtration rate because the solution will run through the filter membrane faster.
Which of the following processes could result in the net movement of a substance into a cell if the substance is more concentrated in the cell than in the surroundings?
Diffusion occurs when particles spread from areas where they are less concentrated to areas where they are more concentrated.
Which of the following would cause an increase in capillary filtration hydrostatic pressure?
An increase in venous hydrostatic pressure and arteriolar diameter would tend to increase capillary hydrostatic pressure and capillary filtration rate. 46.
How do you increase osmotic pressure?
Increasing the osmotic pressure of a food through drying or by the addition of sugars or salts leads to the reduction of water available to the bacterial cell. The major reaction toward an osmotic upshift is the efflux of water from the microorganisms into the external environment.
What causes an increase in the glomerular filtration rate?
An increase in renal arterial pressure (or renal blood flow) causes an increase in GFR. A reduction in renal arterial pressure (or renal blood flow) will have the opposite effect (1).
What affects the glomerular filtration rate?
Key Points. Glomerular filtration is occurs due to the pressure gradient in the glomerulus. Increased blood volume and increased blood pressure will increase GFR. Constriction in the afferent arterioles going into the glomerulus and dilation of the efferent arterioles coming out of the glomerulus will decrease GFR.
What is pore diffusion?
1 Pore diffusion. In the pore diffusion model, diffusion is assumed to take place in the liquid-filled pores. The driving force for intraparticle mass transfer is solute concentration gradient in the pore phase of the particle.
What is the membrane pore size?
The pore size of a membrane can range from 1000 to 0.0001 microns, encompassing the four main types of membrane, Microfiltration (MF), Ultrafiltration (UF), Nanofiltrations (NF) and Reverse Osmosis (RO).
What increases glomerular filtration rate?
increased blood pressure Increased blood volume and increased blood pressure will increase GFR. Constriction in the afferent arterioles going into the glomerulus and dilation of the efferent arterioles coming out of the glomerulus will decrease GFR.
Which of the following factors influence rate of filtration?
The rate of filtration at any instant of time is directly proportional to the pressure difference across the bed. In cake filtration, deposition of solids over a finite period increases the bed depth. If, therefore, the pressure remains constant, the rate of filtration will fall.
What are the factors affecting filtration?
Factors Affecting Filtration Rates and Cake Moistures
- Particle Size of Solids. …
- Ratio of slimes to coarser particles. …
- Filter aids. …
- Feed solids concentration. …
- Filter Thickening. …
- Slurry pH. …
- Flocculation/Dispersion of fine solids. …
- Slurry Age.
What happens if you increase the driving pressure in filtration?
What will happen if you increase the pressure above the beaker (the driving pressure)? The filtration rate will increase. The solutes were all too large to pass through.
What happened in the process of filtration?
filtration, the process in which solid particles in a liquid or gaseous fluid are removed by the use of a filter medium that permits the fluid to pass through but retains the solid particles. Either the clarified fluid or the solid particles removed from the fluid may be the desired product.
Which of the following processes could result in the net movement of a substance into a cell if the substance?
Which one of the following processes could result in the net movement of a substance into a cell, if the substance is more concentrated in the cell than in the surroundings? drinking.
Which process can result in the net movement of a substance into a cell?
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
What increases capillary filtration?
Elevations in arterial (Pa) or venous (Pv) pressure increase capillary pressure, which favors enhanced capillary filtration (Jv).
What causes increased hydrostatic pressure?
Causes of increased hydrostatic pressure within the venous system include heart failure (HF; venous congestion), fluid overload, deep vein thrombosis (DVT), venous compression, and other causes of venous obstruction. These problems result in leg swelling and soft tissue edema.
Why does the rate of osmosis increase with concentration?
Increasing the concentration of solute reduces the space available for water molecules, which reduces their numbers. This in turn increases the tendency of the water to flow into that side from the other side.
What causes a decrease in osmotic pressure?
Decreased intravascular osmotic pressure most commonly results from decreased concentrations of plasma proteins, particularly albumin. Hypoalbuminemia reduces the intravascular colloidal osmotic pressure, resulting in increased fluid filtration and decreased absorption and culminating in edema.
What increases glomerular filtration rate quizlet?
The glomerular filtration rate increases, due to the increased blood flow into the glomerulus.
What factors affect glomerular filtration rate quizlet?
The factors which determine GFR are the net effective filtration pressure, permeability characteristics of the glomerular membrane and its surface area.
What increases filtration fraction?
Catecholamines (norepinephrine and epinephrine) increase filtration fraction by vasoconstriction of afferent and efferent arterioles, possibly through activation of alpha-1 adrenergic receptors. Severe hemorrhage will also result in an increased filtration fraction.