why is hydrostatic pressure in glomerular capillary so high?
Moderators: honeev, Leonid, amiradm, BioTeam
why is hydrostatic pressure in glomerular capillary so high?
why is this hydrostatic pressure as well as net filtration pressure so much higher than in capillaries of other tissues?
- MrMistery
- Inland Taipan
- Posts: 6832
- Joined: Thu Mar 03, 2005 10:18 pm
- Location: Romania(small and unimportant country)
- Contact:
two factors:
1. what dave said(arterial vs venous blood)
2. the renal artery breaks right from the abdominal aorta. small distance from the heart => most of the pressure is still there..
1. what dave said(arterial vs venous blood)
2. the renal artery breaks right from the abdominal aorta. small distance from the heart => most of the pressure is still there..
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter
-
- Coral
- Posts: 493
- Joined: Fri May 27, 2005 8:58 am
- Location: Pilipinas a.k.a. Three Stars and a Sun (300, 000 sq Km)
- Contact:
maybe you ask for differences in pressures within blood vessels. capillaries are anatomically very thin structures and smaller components pass these vessels. larger vessels therefore have higher pressures within, since these are thicker.
---Just one act of random kindness at a time and you can change the world---
- cracked_doc
- Coral
- Posts: 108
- Joined: Sun Apr 23, 2006 5:21 pm
- Location: U.A.E
- cracked_doc
- Coral
- Posts: 108
- Joined: Sun Apr 23, 2006 5:21 pm
- Location: U.A.E
Hydrostatic Pressure
Perfusion and absorbtion are the primary purpose of the capillaries. The artery brings oxygenated blood and nutrients from the heart. The artery then breaks down into arterioles, then capillaries. Here hydrostatic pressure is increased to allow proper diffusion to take place. In the kidneys the afferent ateriole is where blood and other fluids enter the glomerolar capillaries. The hydrostatic is obviously increased at this point secondary to the fact that it just came from primary circulation. Once the blood has circulated through the kidney in then exits through the efferent arterioles. At this point hydrostatic pressure has been greatly reduced. The filtered blod then re-enters systemic circulation or is secreted into the ureters to be excreted from the body. The glomerolus is responsible mainly for reabsorbtion of protien (just FYI). When someone has extended an extended illness, leukocytes can accumulate in the glomerolus, resulting in glomerolonephritis. This can be detected by dysuria, flank pain, and increased protien output note in urine analysis. Just a little more relevant FYI. Any more questions. Just ask.
Who is online
Users browsing this forum: No registered users and 3 guests