Question

When human tissue, such as skin or a blood vessel, is torn or cut, the cells near the damage send out a signal that activates platelets in the vicinity. as the platelets begin to form a plug, they release more chemical signals to attract more platelets and other clotting factors until the bleeding is stopped?

Answer 1

Answer:

The stimulus is the cut, the response is the increasing number of platelets and clotting factors, and it is positive feedback.

Explanation:

If we have to determine the different components of this reaction we can appreciate that what triggered the reaction was the cut on the skin or blood vessel, this is the stimulus, this caused a growth in the number of platelets to form a cloth, this is the response, at the same time the increasing number of platelets, which rehearsed clothing factors brought more platelets and clotting factors, this is a clear example of positive feedback where one element increases the release of other elements, these elements will increase the release of more of the same element and so on it is a cycle.

Answer 2

The factors involved in positive feedback in blood clotting are:

• damaged skin=stimulus
• platelets activated and form clots=response
• positive feedback

Blood clotting is an example of a positive feedback mechanism. It is involved in the accumulation of substances as releases chemicals signals and attracts more platelets to the damaged site.

• In this mechanism, the damaged skin acts as a stimulus to send a signal to activate platelets in the vicinity for the positive feedback of the blood clotting response.
• Response to the signal is it activates the platelets and they form the plug or clot and also release chemicals to attract more platelets.

Thus, the factors involved in positive feedback in blood clotting are:

• damaged skin=stimulus
• platelets activated and form clots=response
• positive feedback

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