membranes and osmosis pressures
fluid entering the capillary
The pressure in the tissue surrounding the capillary, called interstitial fluid pressure, causes fluids to enter the venous side of the capillary due to the pressure gradient. This pressure helps to balance the forces of filtration and reabsorption in the capillary beds.
Capillary exchange refers to the process by which substances such as oxygen, nutrients, and waste products are exchanged between blood and tissues at the capillary level. This exchange occurs through various mechanisms including diffusion, filtration, and osmosis, facilitated by the thin walls and small diameter of capillaries. It is essential for maintaining proper functioning of cells and tissues in the body.
Osmotic pressure is what draws fluid back into the capillary from the tissues.
Arteriole
Blood colloid osmotic pressure
Capillary endothelium
capillary's venous end, where the osmotic pressure exceeds the hydrostatic pressure, facilitating the reabsorption of fluids and solutes. This process allows nutrients and waste products to be exchanged efficiently between the blood and surrounding tissues. Additionally, the thin walls of capillaries enable this exchange to occur easily through diffusion and filtration.
is the force responsible for moving fluid across capillary walls. It is the difference between net hydrostatic pressure and net osmotic pressure. NFP= Net hydrostatic pressure - net osmotic pressure
Blood hydrostatic pressure.
The process that describes the pushing of water across the capillary membrane is called filtration. Filtration occurs due to the pressure difference between the blood inside the capillary (hydrostatic pressure) and the surrounding tissue (osmotic pressure). This pressure gradient forces water and small solutes to move out of the capillary into the surrounding tissue.
The first capillary bed in the series is the glomerular capillary, where filtration occurs. The efferent arteriole on the distal end of the glomerular capillary. Objects it to the next capillary bed in the series: the peritubular capillary. This is where secretion and reabsorbtion take place. This type of system is an example of an arterial portal system.