by means o chorva
Yes, Diapedesis is a process by which "white blood cells" escape from the capillaries into the tissue spaces, but not RBCs and Platlets.
When white blood cells leave the capillaries, this process is called diapedesis or extravasation. It allows white blood cells to move from the blood vessel into the surrounding tissues to reach sites of infection or inflammation.
The round cells that move in the blood capillaries are called RED BLOOD CELLS.
Materials needed by the cells move from the blood into the cells, and waste materials move from the cells into the blood.
Capillaries
Blood does not move faster through the capillaries. Blood flow is slowest in the capillaries.
The blood cells must move through the capillaries in a single file line because the diameter of the capillary is only slightly larger than the diameter of the blood cells - there isn't room for two blood cells to go through side by side.
Red blood cells do not "move files." Instead, they circulate throughout the body to transport oxygen from the lungs to tissues and remove carbon dioxide for excretion. This process occurs in the bloodstream as the cells travel through the arteries, capillaries, and veins.
more rapidly, in the capillaries the blood cells flow in "single file". In the veins, multiple cells are allowed to pass at once
white blood cells
Red blood cells have to pass through capillaries in a single file so the cells move fairly slowly. Because arteries have enough space to allow multiple red blood cells to pass side by side, blood flows fairly quickly. Therefore, blood moves more rapidly in arteries.
Leaky capillaries found in the bone marrow are called sinusoidal capillaries. These specialized capillaries allow larger cells like blood cells to move in and out of the bloodstream more easily due to their larger size and more permeable nature. This facilitates the movement of cells between the bone marrow and blood circulation.