What do you mean by hydrostatic pressure?
The pressure exerted by a fluid at equilibrium at a given point within the fluid, due to the force of gravity. Hydrostatic pressure increases in proportion to depth measured from the surface because of the increasing weight of fluid exerting downward force from above.
Causes of Edema. Edema may be caused by: Increased capillary hydrostatic pressure (as occurs when venous pressures become elevated by gravitational forces, volume expanded states, in heart failure or with venous obstruction) Decreased plasma oncotic pressure (as occurs with hypoproteinemia)
- Hydrostatic pressure in blood vessels is caused by the weight of the blood above it in the vessels. Hydrostatic pressure is the pressure exerted by a fluid at a given point, due to the weight of the fluid above it. Blood is a fluid, so blood has a hydrostatic pressure. Osmotic pressure is also present.
- Even more specifically, the pressure exerted by blood against the wall of a capillary is called capillary hydrostatic pressure (CHP), and is the same as capillary blood pressure. CHP is the force that drives fluid out of capillaries and into the tissues.
- One of these forces is called hydrostatic pressure. In the case of the kidney, hydrostatic pressure is the pressure exerted by fluid on the capillary walls of the glomerulus or the walls of the Bowman's capsule.
The force of hydrostatic pressure means that as blood moves along the capillary, fluid moves out through its pores and into the interstitial space. This movement means that the pressure exerted by the blood will become lower, as the blood moves along the capillary, from the arterial to the venous end.
- The capillaries are the equivalent of a column shaped container, turned on its side. The pressure that blood exerts in the capillaries is known as blood pressure. The force of hydrostatic pressure means that as blood moves along the capillary, fluid moves out through its pores and into the interstitial space.
- Oncotic pressure, or colloid osmotic pressure, is a form of osmotic pressure exerted by proteins, notably albumin, in a blood vessel's plasma (blood/liquid) that usually tends to pull water into the circulatory system. It is the opposing force to hydrostatic pressure.
- hydrostatic pressure. Type:Term. Definitions. 1. the pressure exerted by a liquid as a result of its potential energy, ignoring its kinetic energy; frequently used to distinguish a true pressure from an osmotic pressure or to emphasize the variation in pressure in a column of fluid due to the effect of gravity.
Oncotic or colloid osmotic pressure is a form of osmotic pressure exerted by proteins in the blood plasma or interstitial fluid. Hydrostatic pressure is the force generated by the pressure of fluid within or outside of capillary on the capillary wall.
- Osmotic pressure is the minimum pressure which needs to be applied to a solution to prevent the inward flow of its pure solvent across a semipermeable membrane. It is also defined as the measure of the tendency of a solution to take in pure solvent (which belongs to the solution under discussion) by osmosis.
- Page 1. Hydrostatic Force on a Plane Surface. Henryk Kudela. When a surface is submerged in a fluid, forces develop on the surface due to the fluid. The determination of these forces is important in the design of storage tanks, ships, dams, and other hydraulic structures.
- Causes of Edema. Edema may be caused by: Increased capillary hydrostatic pressure (as occurs when venous pressures become elevated by gravitational forces, volume expanded states, in heart failure or with venous obstruction) Decreased plasma oncotic pressure (as occurs with hypoproteinemia)
Updated: 21st September 2018