Blood plasma travels through vascular compartments throughout the body, and other body fluids, many derived from plasma, are present at very specific sites: Interstitial fluid surrounds cells, bathing and 'supporting' them. The fluid contained in the extracellular compartment is divided into three: interstitial fluid, blood plasma, and fluids contained in special compartments of the body. The extracellular compartment is, as its name implies, the space comprised by the surroundings of cells. The intracellular compartment corresponds to the space contained inside the cells, that is, to the one that is enclosed or delimited by the plasma membrane and that contains a substance known as cytosol. Compartments and distribution of body fluidsĪs we have already discussed, body fluids are distributed throughout the body in two different compartments: the intracellular compartment and the extracellular compartment. It is composed of the same ions found in blood plasma, but it is described as an “ultrafiltrate” of it, with a high content of hyaluronic acid. This fluid is the one that is enclosed inside the joint capsules of the synovial joints, so it is essential for the union and movement of different bones in the body. Its composition is very similar to that of blood plasma, but it differs by having a lower abundance of proteins (almost 200 times less), and by having vitamins and some metabolites absent in plasma. It is involved in protecting the brain and maintaining pressure within the skull, as well as in many other processes involved in the health of the central nervous system. This fluid is derived from blood plasma and is confined to the cavities of the central nervous system (brain and spinal cord). It also contains collagen fibers and other proteins along with hyaluronic acid. It is made up of more than 95% water, in which some minerals such as potassium, chlorine and sodium are dissolved. It is a transparent liquid that participates in some aspects of vision and the protection of the eye against trauma. The vitreous humor is the liquid that occupies a large part of the volume of the eyeball.

Its composition is similar to that of the interstitial fluid with respect to the identity of some of the particles dissolved in it, but not with respect to their concentration, which is as follows:Ĭomposition of the extracellular fluids contained in some special compartments Vitreous humor Plasma is the extracellular fluid that is contained in the vascular compartments. The concentration of these in said liquid is as follows: Like intracellular fluid, interstitial fluid is made up mainly of water, where different types of particles are also dissolved, electrolytes (anions and cations) being the most important. The extracellular space fluid corresponds to about 20% of body weight and is considered divided into interstitial fluid, blood plasma, and some fluids contained in special compartments. The intracellular space contains the intracellular fluid which, of all cells combined, accounts for about 40% of the body weight of the average adult human. This is also true for many animals and plants, hence water is such an essential liquid. More than 60% of the human body is made up of water, which is divided between two compartments known as the intracellular space and the extracellular space. The body fluids They are all the liquids that are found in the different compartments of the human body and that fulfill multiple functions, both in the transport of nutrients and in the regulation of temperature and in the maintenance of cellular and corporal homeostasis.

Compartments and distribution of body fluids.Composition of the extracellular fluids contained in some special compartments.

The body fluid compartments change