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Topic: Interstitial fluid


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  Ch
Approximately two-thirds of the body’s water is contained in the intracellular fluid, the fluid portion of the cytoplasm of cells.
The rest is extracellular fluid, which includes the intravascular fluid (the blood plasma), the cerebrospinal fluid, and the interstitial fluid.
That is, the concentration of solutes in the cells and in the interstitial fluid that bathes them is balanced, so that water does not tend to move into or out of the cells.
www.albany.edu /faculty/cafrye/apsy601/Ch.11Eating.html   (2329 words)

  
 Extracellular fluid Summary
The body fluids found outside the cells, such as plasma (the liquid portion of blood and lymph), and interstitial fluid, are generically termed extracellular fluid.
The interstitial fluid has almost the same composition of plasma, except for having much lower protein concentrations, and it is filtered to the extracellular matrix from the capillary vessels by diffusion (i.e., capillary pressure).
The extracellular fluid filtered from the blood vessels (arterial capillaries) into the extracellular matrix flows among the cells transporting nutrients and chemical messengers and receives from cells metabolites, ions, proteins, and other substances, and is then reabsorbed by either the venous or the lymphatic capillaries.
www.bookrags.com /Extracellular_fluid   (607 words)

  
 Fluid Balance
The extracellular fluid is further divided into that which is found as blood plasma within blood vessels, and that which is found in the microscopic spaced between cells called interstitial fluid.
Of the ECF approximately 80% is interstitial fluid and 20% is blood plasma
There are some special fluid and compartments including: lymph; cerebrospinal fluid; synovial; aqueous humour/vitreous body of the eyes; endolymph/perilymph in the ears; pleural, pericardial and peritoneal fluid between serous membranes; and glomerular filtrate in the kidneys.
www.ann.com.au /MedSci/fluid.htm   (1296 words)

  
 Dermal Interstitial fluid glucose ...
The conclusion drawn was that dermal interstitial fluid glucose readings are an accurate way of estimating plasma glucose concentrations, warranting further research into systems for home monitoring that rely on interstitial fluid measurements.
Since there is no truly significant lag time for changes in interstitial fluid glucose concentration compared with changes in plasma glucose, it is hypothesized that the kinetics of dermal interstitial fluid is similar to that of plasma.
Until then, the less but still invasive interstitial fluid method with its potential improvements of reduced pain, increased ease and equal accuracy, will be only a step along the way and not a piece of a bigger solution.
www.medforum.nl /idm/dermal.htm   (604 words)

  
 Cartilage Interstitial Fluid Pressurization   (Site not responding. Last check: 2007-10-19)
Interstitial fluid pressurization has long been hypothesized to play a fundamental role in the load support mechanism and frictional response of articular cartilage.
The first objective of this study was to investigate experimentally the hypothes is that cartilage interstitial fluid pressurization does support the great majority of the applied load, in the testing configurations of confined compression creep and stress-relaxation.
It was found that interstitial fluid pressure supported more than 90% of the total stress for durations as long as 725+/-248 s during stress-relaxation (mean+/-SD, n=7), and 404+/-229 s during creep (n=7).
www.columbia.edu /~ga29/ab_fluid_pres.html   (253 words)

  
 Cartilage Interstitial Fluid Pressurization in Dynamic Loading   (Site not responding. Last check: 2007-10-19)
The cartilage interstitial fluid pressure and deformation were measured simultaneously as a function of time.
These properties were employed in the biphasic theory to predict the interstitial fluid pressure response and compare it to experiment, resulting in nonlinear coefficients of determination ranging from r^2=0.89+/-0.15 to r^2=0.96+/-0.03 depending on frequency.
It was found for the samples of this study that above a characteristic frequency of 0.00044 Hz, the magnitude and phase of fluid pressurization matched the applied stress, reducing the tissue strain at the impermeable bottom surface to nearly zero.
www.columbia.edu /~ga29/ab_ifpdynamic.html   (283 words)

  
 Fluid Compartment Deficits - The Merck Veterinary Manual
Fluids administered must remain in the intravascular space, increase the vessel wall tension, and obliterate the need for the baroreceptor compensatory response.
Animals with rapid fluid loss into a third body fluid space (a space within the body cavity where fluid from the local interstitial and intravascular spaces leak) have rapid fluid shifts from the intravascular compartments into these spaces before clinical evidence of interstitial fluid loss is seen.
Fluid selection becomes critical, with the rate and volume titrated until the goals of resuscitation have been met (ie, normal heart rate, blood pressure, perfusion parameters).
www.merckvetmanual.com /mvm/htm/bc/160403.htm   (653 words)

  
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This is due to the pressure of the fluid being higher at the arterial end of the capillary than at the venous end.
The pressure of the interstitial fluid (IFHP) is a negative one of -5mm/Hg.
A similar situation exists between the interstitial fluid and the intracellular fluid although it is complicated by the presence of ion pumps and carriers.
www.jdaross.cwc.net /fluid.html   (4047 words)

  
 ISF-Plasma Exchange
The aqueous solutions that compose the plasma and the interstitial fluid exchange readily through the thin walls of most of your body's capillaries.
Most of the fluid within the capillaries is retained, but some filters through pores between the cells, pushed by the pressure difference between the capillary blood and the ISF.
The decrease in hydrostatic pressure results in a diminution in the region where fluid is lost from the plasma, and an expansion in the region where fluid returns back to the plasma.
physioweb.med.uvm.edu /bodyfluids/isf-plas.htm   (1035 words)

  
 Isolation of interstitial fluid from skeletal muscle and subcutis in mice using a wick method -- Markhus and Wiig 287 ...
Effect of increased venous pressure on the hydrostatic and colloid osmotic pressure in subcutaneous interstitial fluid in rats: edema-preventing mechanisms.
Interstitial fluid colloid osmotic and hydrostatic pressures in subcutaneous tissue of patients with nephrotic syndrome.
Interstitial fluid volume, colloid osmotic and hydrostatic pressures in rat skeletal muscle.
ajpheart.physiology.org /cgi/content/full/287/5/H2085   (3596 words)

  
 Interstitial fluid - Wikipedia, the free encyclopedia
Interstitial fluid (or tissue fluid, or intercellular fluid) is a solution which bathes and surrounds the cells of multicellular animals.
Interstitial fluid consists of a water solvent containing amino acids, sugars, fatty acids, coenzymes, hormones, neurotransmitters, salts, as well as waste products from the cells.
The composition of tissue fluid depends upon the exchanges between the cells in the tissue and the blood.
en.wikipedia.org /wiki/Interstitial_fluid   (566 words)

  
 Massage Therapy Massage Bodywork Massage Therapy Schools Massage Therapy Career
The remaining fluid (approximately 30 percent) is distributed between the cells as interstitial fluid (See Figure 1).
Interstitial fluid is fluid that has leaked out of blood capillaries.
As fluid accumulates in the interstitium, damage is caused to the surrounding tissue.
www.massagetherapy.com /articles/index.php/article_id/883   (3312 words)

  
 Method for recovering proteins from the interstitial fluid of plant tissues - Patent 6841659
By "interstitial fluid" is meant the extract obtained from all of the area of a plant not encompassed by the plasmalemma i.e., the cell surface membrane.
The term is meant to include all of the fluid, materials, area or space of a plant which is not intracellular (wherein intracellular is defined to be synonymous with innercellular) including molecules that may be released from the plasmalemma by this treatment without significant cell lysis.
The volume of interstitial fluid collected from the infiltrated leaf tissue was between 42-170% of the leaf tissue by weight depending on the number of infiltrations carried out.
www.freepatentsonline.com /6841659.html   (11223 words)

  
 Fluid Compartment Dynamics - The Merck Veterinary Manual
The membrane separating the intravascular and interstitial compartments is freely permeable to water and small ions, while the membrane surrounding the intracellular space is not.
Whether or not fluid remains in the intravascular space or moves into the interstitium is the result of the differences between the COP and hydrostatic pressure in the 2 compartments.
Fluid moves into the interstitial space when intravascular hydrostatic pressure is increased over COP, membrane pore size increases, or intravascular COP becomes lower than interstitial COP.
www.merckvetmanual.com /mvm/htm/bc/160402.htm   (417 words)

  
 Improving Drug Delivery to Tumors
Interstitial fluid is the fluid found in the spaces between tissues and organs, and is outside the vascular and lymphatic systems.
The interstitial spaces are important for the transport of nutrients and drugs from blood vessels to neighboring cells.
All of these factors increase the tumor interstitial fluid pressure to the point where it almost equals the capillary fluid pressure inhibiting the outflow of capillary contents.
www.suite101.com /article.cfm/new_cancer_treatments/112145   (411 words)

  
 DCL-slides   (Site not responding. Last check: 2007-10-19)
Edema means accumulation of excess fluid in interstitial tissues.
Pulmonary edema = accumulation of fluid in the alveoli, usually as a consequence of left heart failure.
Edema fluid can be a transudate or an exudate depending on the source and content.
www.med.uiuc.edu /m2/Pathology/FLUID.htm   (1363 words)

  
 Interstitial - Wikipedia, the free encyclopedia
Interstitial program, short television programming which is often shown between movies or other events
Interstitial webpage, a web page that is displayed before an expected content page, often to display advertisements or confirm the user's age
Interstitial art, any work of art whose basic nature falls between, rather than within, the familiar boundaries of accepted genres or media
en.wikipedia.org /wiki/Interstitial   (151 words)

  
 Fluid Exchange in Tissues
These substances can be transported from the blood capillaries to the interstitial fluid to the cells and back again by diffusion, filtration, osmosis, and active transport.
Essentially, the water balance in the plasma and interstitial compartments depends on blood pressure and plasma protein concentration.
The intracellular fluid is hypertonic with respect to the interstitial fluid, therefore, water moves into the cells by osmosis at #4.
www.elmhurst.edu /~chm/vchembook/252fluidtissues.html   (387 words)

  
 Relationship of interstitial fluid volume to alveolar fluid clearance in mice: ventilated vs. in situ studies -- Fukuda ...
A calculation of interstitial fluid volume was used to estimate the fluid in the interstitial space of the lung.
Alveolar fluid clearance was rapid and similar in both the ventilated and in situ mice at 15 min.
Alveolar epithelial fluid clearance is mediated by endogenous catecholamines at birth in guinea pigs.
jap.physiology.org /cgi/content/full/89/2/672   (5830 words)

  
 Fluid, Electrolyte, and pH Balance (chapter 21)
Fluid Balance: Average adult male body is about 63% water, female is about 52% (she has more adipose tissue, and thus less water).
The interstitial fluid, as it accumulates, causes the lymphatic vessels to open and the fluid enters them and becomes lymph.
It involves the osmotic pressure of the extracellular fluid and the thirst center in the hypothalamus.
www.dacc.cc.il.us /~lgarrett/fluid.html   (2146 words)

  
 Measurement of interstitial albumin in human skeletal muscle and adipose tissue by open-flow microperfusion -- Ellmerer ...
Albumin concentration and recovery rate for albumin in the interstitial fluid of adipose tissue and skeletal muscle calculated by linear regression analysis of the individual no-net-flux data.
To prevent evaporation of the sampled interstitial fluid, the sample vials were covered and cooled on ice.
Albumin concentrations are expressed as the difference between sampled fluid and perfusate fluid on the y-axis and are plotted against concentration of perfusate on the x-axis.
ajpendo.physiology.org /cgi/content/full/278/2/E352   (3274 words)

  
 eMedicine - Lymphedema : Article by Don R Revis, Jr, MD
Interstitial fluid normally contributes to the nourishment of tissues.
This causes the normal volume of interstitial fluid formation to exceed the rate of lymphatic return, resulting in the stagnation of high molecular weight proteins in the interstitium.
Accumulation of interstitial fluid leads to massive dilatation of the remaining outflow tracts and valvular incompetence that causes reversal of flow from subcutaneous tissues into the dermal plexus.
www.emedicine.com /med/topic2722.htm   (4060 words)

  
 VIII. Control of Extracellular Fluid Volume
The extracellular fluid compartment is a complex entity composed not only of two major divisions, the vascular and the interstitial fluid compartments, but also of several subdivisions of these, each with differing characteristics.
It is not surprising, therefore, that the control of ECF fluid volume, in marked contrast to control of the ECF osmotic concentration, is accomplished by a variety of mechanisms, many of which are poorly understood.
It is customary to speak of control of extracellular fluid volume, but it is apparent that many of the various mechanisms are triggered by factors related to the volume of the vascular compartment.
www2.kumc.edu /ki/physiology/course/eight/8_1.htm   (691 words)

  
 BRAIN-FLUID SAMPLING GIVES GLIMPSE INTO ALZHEIMER’S DISEASE   (Site not responding. Last check: 2007-10-19)
Cerebrospinal fluid, the fluid that cushions and surrounds the brain, is a main focus in efforts to diagnose and possibly treat Alzheimer’s disease.
To remove brain fluid samples for evaluation, scientists often use a technique called microdialysis, in which a miniscule tube is inserted into the part of the brain being studied.
Moreover, levels of overall ABeta in interstitial fluid and cerebrospinal fluid were not correlated in young animals but were correlated in older, plaque-ridden mice.
www.newmaterials.com /news/6477.asp   (1087 words)

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