The Lymphatic System

Transcript

00:00

The Lymphatic System

00:10

Why is the Lymph in the Tissue?

00:18

20 liters of plasma is released into the interstitial space of the tissues each day due to capillary filtration.

00:37

Once this fluid is out of the bloodstream and in the tissue space, it is referred to as interstitial fluid. this 20 liters, only 17 is reabsorbed directly by the blood vessels The remaining 3 liters of water is drained in excess and emptied back into the bloodstream via a series of vessels, trunks and ducts.

00:49

How Is it Picked Up?

00:57

As the interstitial fluid begins to accumulate, it is picked up and removed by tiny lymphatic vessels and returned to theblood.

01:09

As soon as the interstitial fluid enters the lymph capillaries, it is called lymph. Returning the fluid to the blood prevents edema and helps to maintain normal blood volume and pressure.

01:21

Where Does It Go?

01:31

As new Interstitial fluid is produced, it replaces old fluid, which is drained towards lymph vessels

01:36

What happens to the Interstitial Fluid?

01:41

Hydrostatic pressure, the force exerted by a fluid against a wall causes movement of fluid between compartments, This pressure forces plasma and nutrients out of the capillaries and into the surrounding tissues. Fluid and cellular wastes in the tissues enter the capillaries at the venule end, where the hydrostatic pressure is less than the osmotic pressure in the vessel.

01:50

Hydrostatic pressure, the force exerted by a fluid against a wall causes movement of fluid between compartments, This pressure forces plasma and nutrients out of the capillaries and into the surrounding tissues. Fluid and cellular wastes in the tissues enter the capillaries at the venule end, where the hydrostatic pressure is less than the osmotic pressure in the vessel.