What are blind ended lymphatic capillaries?
Lymphatic capillaries are blind-ended tubes with thin endothelial walls (only a single cell in thickness). They are arranged in an overlapping pattern, so that pressure from the surrounding capillary forces at these cells allows fluid to enter the capillary (see the image below).
How does interstitial fluid move into the lymphatic capillaries?
The fluid accumulates in the interstitial space inside tissues after leaking out through the cardiovascular capillaries. The fluid enters the lymphatic capillaries by leaking through the minivalves located in the junctions of the endothelium.
What carries interstitial fluid?
It is derived from blood plasma as fluids pass through capillary walls at the arterial end. As the interstitial fluid begins to accumulate, it is picked up and removed by tiny lymphatic vessels and returned to the blood. As soon as the interstitial fluid enters the lymph capillaries, it is called lymph.
Where does interstitial fluid drain?
As a result, interstitial fluid rich in waste metabolites returns to the blood towards the venous end of the capillary bed, eventually draining into the venules to be carried away in the venous system.
When excess interstitial fluid is not reabsorbed?
Anatomy Ch. 21/22
| Question | Answer |
|---|---|
| When excess interstitial fluid is not reabsorbed, the tissues swell, causing a condition called __. | edema |
| After they are formed, lymphocytes are housed in __ lymphatic structures. | secondary |
| Which vessels have valves? | lymphatic vessels and veins |
What vessels pick up excess extracellular fluid in the interstitial space?
Lymph capillaries pick up the excess interstitial fluid and proteins and return them to the venous blood. After the fluid enters the lymph capillaries, it is called lymph.
What is interstitial fluid function?
Fluid found in the spaces around cells. It comes from substances that leak out of blood capillaries (the smallest type of blood vessel). It helps bring oxygen and nutrients to cells and to remove waste products from them. As new interstitial fluid is made, it replaces older fluid, which drains towards lymph vessels.
What does intracellular fluid do?
The main function of intracellular fluid is to help with the transport of gases, nutrients, and other molecules. Intracellular fluid is also important for intracellular communication and cell signaling. Extracellular fluid is found in blood plasma and in the interstitial space between cells.
What is the function of interstitial fluid?
Fluid found in the spaces around cells. It comes from substances that leak out of blood capillaries (the smallest type of blood vessel). It helps bring oxygen and nutrients to cells and to remove waste products from them.
How is interstitial fluid removed from tissues?
The lymphatic system plays a prominent role in immune function, fatty acid absorption, and removal of interstitial fluid from tissues.
What vessels pick up excess extracellular fluid in the interstitial space and return it circulation quizlet?
What vessels pick up excess extracellular fluid in the interstitial space and return it to circulation? The lymph ducts in the thoracic cavity drain into the: junction of the internal jugular vein and subclavian vein.