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Arisa [49]
2 years ago
9

Carbohydrates on the surface of leukocytes play an important role in responding to infection or inflammation. Place the followin

g steps of the response in the correct orderA.Endothelial cells express selectins on their plasma membrane.B.Selectins bind to carbohydrates on the surface of leukocytes, causing them to stick.C.Leukocytes crawl out of vessel into adjacent tissue.D.Leukocytes roll along vessel walls.E.Cytokines are released at sites of infection or inflammation and stimulate endothelial cells of blood vessels.
Biology
2 answers:
svlad2 [7]2 years ago
5 0

Answer:

E, A, B, D, C

Explanation:

Leukocytes are cells that are found in the blood stream and they help identify foreign materials and fight against them, they are also called white blood cells.

The process that is given in the question looks like this when the steps are put in the right order;

E, cytokines are secreted where needed and they signal certain cells according to the action that needs to be taken.

A, endothelial cells which are located on the surface of the blood vessels produce selectins.

B, selectins which are proteins that are made up of single chain and help with the cell adhesion with other molecules, carbohydrates in the example.

D, leukocytes roll along the walls of the blood vessel.

C, and lastly leukocytes crawl out of the vessel into the adjacent tissue.

I hope this answer helps.

Citrus2011 [14]2 years ago
5 0

Answer: The steps of the response in the correct order are:

E) Cytokines are released at sites of infection or inflammation and stimulate endothelial cells of blood vessels.

A) Endothelial cells express selectins on their plasma membrane.

B) Selectins bind to carbohydrates on the surface of leukocytes, causing them to stick.

D)Leukocytes roll along vessel walls

C)Leukocytes crawl out of vessel into adjacent tissue.

Explanation: Inflammation is defined as the reaction of vascularized living tissue to local injury ( trauma). Cell involved in inflammatory responses includes:

- leucocytes

- macrophages

-lymphocytes and

- vascular endothelial cells.

There are sequence of events that leads to leucocytes extravasation( that is, movement of leucocytes from blood vessels into tissue spaces) in response to inflammation. These includes the steps listed above in their correct order. I hope this helps.

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