Distribution Of Fluids In The Human Body - Biology Discussion

à 16 avril

Learn and reinforce your understanding of Movement of water between body compartments through video. Fluid balance is a necessity for maintaining healthy body functioning - Osmosis is an efficient, enjoyable, and social way to learn. Sign up for an account today! Don't study it, Osmose it.Body Water Compartments. Water makes up 50-70% of body mass - approximately 42L in a 70kg person. There are two main fluid compartments: Intracellular fluid (ICF) - the fluid within cells which accounts for 65% of total body weight. Extracellular fluid (ECF) - itself can be divided into: Interstitial Fluid (ISF) - 65%; PlasmaMovement of water between intracellular and extracellular body fluid compartments. Created on Sat, 06/27/2015 - 19:09 Last updated Wed, 01/08/2020 - 18:33. Topic. The intracellular fluid never really communicates with the outside world.The processes of diffusion, osmosis, and filtration are responsible for the movement of materials into and out of body cells as well as the exchange of molecules between body fluid compartments. These processes involve some basic principles of physics which will be demonstrated in this laboratory.The remainder makes up the base of the fluid surrounding the cell which is referred to as the extracellular fluid or ECF. Extracellular Fluid (ECF) The extracellular fluid is subdivided into three parts: The plasma of the blood; Tissue fluid (interstitial fluid) Lymph fluid; Water Movement. Water is able to move between the various compartments

Basic Cellular Physiology: Fluid Compartments - Ponder Med

You can support the work of campbellteaching, at no cost whatsoever to yourself, if you use the link below as your bookmark to access Amazon. Thank you.If in...Fluid Movement Extracellular fluid is separated among the various compartments of the body by membranes. These membranes are hydrophobic and repel water; however, there a few ways that fluids can move between body compartments.The movement of fluids between cellular compartments _____. is regulated by osmotic and hydrostatic forces Electrolyte light balance usually refers only to salt balance and is important for what processes?Hydrostatic pressure, the force exerted by a fluid against a wall, causes movement of fluid between compartments. The hydrostatic pressure of blood is the pressure exerted by blood against the walls of the blood vessels by the pumping action of the heart.

Movement of water between intracellular and extracellular

Hydrostatic pressure, the force exerted by a fluid against a wall, causes movement of fluid between compartments. The hydrostatic pressure of blood is the pressure exerted by blood against the walls of the blood vessels by the pumping action of the heart.These pumps use the energy supplied by ATP to pump sodium out of the cell and potassium into the cell (). Fluid Movement between Compartments. Hydrostatic pressure, the force exerted by a fluid against a wall, causes movement of fluid between compartments. The hydrostatic pressure of blood is the pressure exerted by blood against the walls ofThird spacing is an outdated term that describes the movement of bodily fluid from the blood, into the spaces between cells. Learn more. to describe a non-functional compartment in the bodyThe upward movement of warm air and the downward movement of cold air forms fluids. How are pinocytosis and phagocytosis different? Phagocytosis is the movement of whole cells, or large particles.The movement of fluids between cellular compartments _____. a. requires ATP for the transport to take place b. is regulated by osmotic and hydrostatic forces c. always involves filtration d. requires active transport

How fluid moves through compartments depends on several variables described by Starling's equation.

Learning Objectives

Describe the movement of fluid between extracellular compartments

Key Points

Interstitial fluid is formed when hydrostatic pressure generated by the heart pushes water out of the capillaries. The water passes from a high concentration outside of the vessels to a low concentration inside of the vessels, but equilibrium is never reached because the constant blood flow. Osmotic pressure works opposite to hydrostatic pressure to hold water and substances in the capillaries. Hydrostatic pressure is stronger in the arterial ends of the capillaries, while osmotic pressure is stronger at the venous ends of the capillaries. Interstitial fluid is removed through the surrounding lymph vessels, and eventually ends up rejoining the blood. Sometimes the removal of tissue fluid does not function correctly and there is a buildup, called edema. The Starling equation describes the pressure gradients that drive the movement of water across fluid compartments.

Key Terms

Starling equation: An equation that illustrates the role of hydrostatic and oncotic forces in the movement of fluid across capillary membranes. interstitial fluid: A solution that bathes and surrounds the cells of multicellular animals.

Fluid Movement

Extracellular fluid is separated among the various compartments of the body by membranes. These membranes are hydrophobic and repel water; however, there a few ways that fluids can move between body compartments. There are small gaps in membranes, such as the tight junctions, that allow fluids and some of their contents to pass through membranes by way of pressure gradients.

Formation of Interstitial Fluid

Hydrostatic pressure is generated by the contractions of the heart during systole. It pushes water out of the small tight junctions in the capillaries. The water potential is created due to the ability of the small solutes to pass through the walls of capillaries.

This buildup of solutes induces osmosis. The water passes from a high concentration (of water) outside of the vessels to a low concentration inside of the vessels, in an attempt to reach an equilibrium. The osmotic pressure drives water back into the vessels. Because the blood in the capillaries is constantly flowing, equilibrium is never reached.

The balance between the two forces differs at different points on the capillaries. At the arterial end of a vessel, the hydrostatic pressure is greater than the osmotic pressure, so the net movement favors water and other solutes being passed into the tissue fluid.

At the venous end, the osmotic pressure is greater, so the net movement favors substances being passed back into the capillary. This difference is created by the direction of the flow of blood and the imbalance in solutes created by the net movement of water that favors the tissue fluid.

Removal of Interstitial Fluid

The lymphatic system plays a part in the transport of tissue fluid by preventing the buildup of tissue fluid that surrounds the cells in the tissue. Tissue fluid passes into the surrounding lymph vessels and eventually rejoins the blood.

Sometimes the removal of tissue fluid does not function correctly and there is a buildup, which is called edema. Edema is responsible for the swelling that occurs during inflammation, and in certain diseases where the lymphatic drainage pathways are obstructed.

Starling Equation

The Starling model: Note the concentration of interstitial solutes (orange) increases proportionally to the distance from the arteriole.

Capillary permeability can be increased by the release of certain cytokines, anaphylatoxins, or other mediators (such as leukotrienes, prostaglandins, histamine, bradykinin, etc.) that are released by cells during inflammation. The Starling equation defines the forces across a semipermeable membrane to calculate the net flux.

The solution to the equation is known as the net filtration or net fluid movement. If positive, fluid will tend to leave the capillary (filtration). If negative, fluid will tend to enter the capillary (absorption). This equation has a number of important physiologic implications, especially when disease processes grossly alter one or more of the variables.

Capillary dynamics: Oncotic pressure exerted by the proteins in blood plasma tends to pull water into the circulatory system.

This is a diagram of the Starling model. Note how the concentration of interstitial solutes increases proportionally to the distance from the arteriole.

According to Starling's equation, the movement of fluid depends on six variables:

Capillary hydrostatic pressure (Pc) Interstitial hydrostatic pressure (Pi) Capillary oncotic pressure (πz) Interstitial oncotic pressure (πi) Filtration coefficient (Kf) Reflection coefficient (σ)

The Starling Equation is mathematically described as Flux=Kf[(Pc-Pi)-σ (πz-πi)].

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Bioelectrical Impedance Analysis. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Bioelectrical_Impedance_Analysis. License: CC BY-SA: Attribution-ShareAlike Body water. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Body_water. License: CC BY-SA: Attribution-ShareAlike bioelectrical impedance analysis. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/bioelec...nce%20analysis. License: CC BY-SA: Attribution-ShareAlike extracellular fluid. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/extracellular%20fluid. License: CC BY-SA: Attribution-ShareAlike intracellular fluid. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/intracellular%20fluid. License: CC BY-SA: Attribution-ShareAlike Water. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Water. License: Public Domain: No Known Copyright Extracellular fluid. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Extracellular_fluid. License: CC BY-SA: Attribution-ShareAlike Body water. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Body_water. License: CC BY-SA: Attribution-ShareAlike Interstitial fluid. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Interstitial_fluid. License: CC BY-SA: Attribution-ShareAlike Intracellular fluid. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Intracellular_fluid. License: CC BY-SA: Attribution-ShareAlike plasma. Provided by: Wiktionary. Located at: en.wiktionary.org/wiki/plasma. License: CC BY-SA: Attribution-ShareAlike intracellular fluid. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/intracellular%20fluid. License: CC BY-SA: Attribution-ShareAlike interstitial fluid. Provided by: Wiktionary. Located at: en.wiktionary.org/wiki/interstitial_fluid. License: CC BY-SA: Attribution-ShareAlike Water. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Water. License: Public Domain: No Known Copyright Extracellular Matrix. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/File:Ex...lar_Matrix.png. License: Public Domain: No Known Copyright Biological cell. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/File:Biological_cell.svg. License: CC BY-SA: Attribution-ShareAlike Extracellular fluid. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Extracellular_fluid. License: CC BY-SA: Attribution-ShareAlike Interstitial fluid. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Interstitial_fluid%23Composition. License: CC BY-SA: Attribution-ShareAlike Intracellular fluid. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Intracellular_fluid%23Properties_and_composition. License: CC BY-SA: Attribution-ShareAlike ion. Provided by: Wiktionary. Located at: en.wiktionary.org/wiki/ion. License: CC BY-SA: Attribution-ShareAlike Boundless. Provided by: Boundless Learning. Located at: www.boundless.com//physiology/definition/transcellular-fluid. License: CC BY-SA: Attribution-ShareAlike electrolyte. Provided by: Wiktionary. Located at: en.wiktionary.org/wiki/electrolyte. License: CC BY-SA: Attribution-ShareAlike Water. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Water. License: Public Domain: No Known Copyright Extracellular Matrix. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/File:Extracellular_Matrix.png. License: Public Domain: No Known Copyright Biological cell. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/File:Biological_cell.svg. License: CC BY-SA: Attribution-ShareAlike Experiment #11: Testing Water Filters. Provided by: Chemistry Land. Located at: http://www.chemistryland.com/CHM107Lab/Lab5/Filters/Lab5Exp2filters.html. License: Public Domain: No Known Copyright interstitial fluid. Provided by: Wiktionary. Located at: en.wiktionary.org/wiki/interstitial_fluid. License: CC BY-SA: Attribution-ShareAlike Capillary. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Capillary. License: CC BY-SA: Attribution-ShareAlike Starling equation. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Starling_equation. License: CC BY-SA: Attribution-ShareAlike Interstitial fluid. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Interstitial_fluid. License: CC BY-SA: Attribution-ShareAlike Capillary. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Capillary. License: CC BY-SA: Attribution-ShareAlike Starling equation. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Starling%20equation. License: CC BY-SA: Attribution-ShareAlike Water. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/Water. License: Public Domain: No Known Copyright Extracellular Matrix. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/File:Extracellular_Matrix.png. License: Public Domain: No Known Copyright Biological cell. Provided by: Wikipedia. Located at: en.Wikipedia.org/wiki/File:Biological_cell.svg. License: CC BY-SA: Attribution-ShareAlike Experiment #11: Testing Water Filters. Provided by: Chemistry Land. Located at: http://www.chemistryland.com/CHM107Lab/Lab5/Filters/Lab5Exp2filters.html. License: Public Domain: No Known Copyright Capillary dynamics. Provided by: Wikimedia. Located at: upload.wikimedia.org/wikipedi...irculation.jpg. License: Public Domain: No Known Copyright