Which of the following are mechanisms which prevent clotting under normal circumstances? Select all that apply. platelets are not released into the bloodstream until needed heparin and anti-thrombin circulate in the bloodstream vessels are coated

Which of the following are mechanisms which prevent clotting under normal circumstances? Select all that apply. platelets are not released into the bloodstream until needed heparin and anti-thrombin circulate in the bloodstream vessels are coated

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter11: The Blood

Section: Chapter Questions

Problem 8RE

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Concept explainers

Tissue regeneration & repair

Tissue regeneration involves the restoration of tissue components by regrowth of damaged tissues. In contrast, tissue repair involves patching of injured tissue rather than restoring it. It is the proliferative capacity of the cells that decides the amount of regeneration against the repair that would occur in the tissue. Both regeneration and repair depending on the duration of the injury and response to the inflammation.

Question

Which of the following are mechanisms which prevent clotting under normal circumstances? Select all that apply.

platelets are not released into the bloodstream until needed

heparin and anti-thrombin circulate in the bloodstream

vessels are coated with prostacyclin which repels platelets

clotting enzymes are not released into the bloodstream until needed

rapid blood flow

Expert Solution

Step 1

Blood clotting is a complex phenomena which usually occurs when due to any reason blood vessels are broken. Under normal circumstances blood clotting does not occur.

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