Tissue Fluid (formation/function) Flashcards
How is tissue fluid formed?
Tissue fluid is formed when blood plasma is filtered through the walls of capillaries
What is tissue fluid?
The fluid that surrounds the cells in your body
What does tissue fluid contain?
Tissue fluid contains water, glucose, amino acids, fatty acids, ions and oxygen
What is the function of tissue fluid?
Tissue fluid is the means materials are exchanged between blood and cells
How is tissue fluid forced out the capillaries?
Since capillaries are one cell thick, inbetween the cells there are ting gaps that allow liquid and small molecules out forcefully
How is tissue fluid formed?
As blood enters the capillaries from the arterioles, there is a high hydrostatic pressure. This hydrostatic pressure causes tissue fluid to move out of the blood plasma
This high pressure causes ultrafiltration, which is water and small molecules (glucose, amino acids, fatty acids, ions and oxygen) to move out the capillaries
What is forced out the capillaries? What remains in the capillary?
Forced out:
Water molecules, Dissolved minerals, Glucose, Small proteins + Amijo acids. Fatty acids and Oxygen
Remains in capillary:
Red blood cells, Platelets and Large proteins
Why is tissue fluid reabsorbed?
Tissue fluid is reabsorbed because eventually liquid runs out in your blood and would lead to your cells being covered in a lot of liquid.
This would eventually lead to seeing swelling across your body
How is tissue fluid reabsorbed?
Due to the large molecules remaining in the blood, the liquid remanining inside the capillaries has a lowered water potential.
As a result the fluid moves back into the capillaries through osmosis down the water potential gradient
Does all the tissue fluid get reabsorbed?
Not all the tissue fluid will be reabsorbed by osmosis, as equilibrium is restored eventually
How is the rest of the tissue fluid reabsorbed?
The rest of tissue fluid is absorbed into the lymphatic system and eventually drained back into the bloodstream near the heart
