Podcast
Questions and Answers
What does the term Net Filtration Pressure (NFP) refer to?
What does the term Net Filtration Pressure (NFP) refer to?
- The osmotic pressure in Bowman's Capsule
- The pressure in the renal tubules
- The pressure that inhibits filtration
- The pressure that promotes filtration (correct)
What is the formula for calculating NFP?
What is the formula for calculating NFP?
NFP = HPgc - (OPgc + HPcs)
What does glomerular filtration rate (GFR) represent?
What does glomerular filtration rate (GFR) represent?
The amount of filtrates formed in all renal corpuscles of both kidneys combined
What is the average GFR rate?
What is the average GFR rate?
To maintain homeostasis of body fluids, the kidneys need to
To maintain homeostasis of body fluids, the kidneys need to
If GFR is too high, what happens to needed substances?
If GFR is too high, what happens to needed substances?
If GFR is too low, what happens to filtrate components?
If GFR is too low, what happens to filtrate components?
GFR is directly related to what other factor?
GFR is directly related to what other factor?
What does HPgc stand for?
What does HPgc stand for?
What is the value of HPgc?
What is the value of HPgc?
What does HPcs stand for?
What does HPcs stand for?
What is the value of HPcs?
What is the value of HPcs?
What does OPgc stand for?
What does OPgc stand for?
What is the value of OPgc?
What is the value of OPgc?
Flashcards are hidden until you start studying
Study Notes
Net Filtration Pressure (NFP)
- Net Filtration Pressure (NFP) is the total pressure that promotes the filtration process in the kidneys.
- NFP formula: NFP = HPgc - (OPgc + HPcs), where each variable represents different pressures involved in filtration.
Glomerular Filtration Rate (GFR)
- Glomerular filtration rate (GFR) measures the amount of filtrate produced by all renal corpuscles in both kidneys.
- On average, GFR is 125 ml/min, indicating the kidney's capacity for filtration.
Importance of GFR
- The kidneys must maintain a relatively constant GFR to ensure homeostasis of body fluids.
- A GFR that is too high results in essential substances passing through the renal tubule too quickly, reducing reabsorption.
- Conversely, if GFR is too low, many filtrate components are reabsorbed, impairing waste elimination.
Relationship Between NFP and GFR
- GFR is directly related to NFP; changes in NFP will affect the filtration rate in the kidneys.
Hydrostatic and Osmotic Pressures
- HPgc (Hydrostatic Pressure of Glomerulus) is the pressure exerted by blood in the glomerulus, facilitating fluid outflow; value is 55 mm Hg.
- HPcs (Hydrostatic Pressure in Bowman's Capsule) opposes glomerular filtration by resisting fluid movement; value is 15 mm Hg.
- OPgc (Osmotic Pressure of Glomerular Capillary) is due to plasma proteins in blood, pulling fluid back towards the glomerulus; value is 30 mm Hg.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
