In the blood clotting process,platelets arrive at the site of damage and start secreting substances to attract more platelets.More platelets arrive at the site and secrete attractants to recruit more platelets.This is an example of:
A)negative feedback.
B)positive feedback.
C)feedforward regulation.
D)paracrine signaling.
E)electrical signaling.

Question

Quizplus · Accepted Answer

This is an example of positive feedback since the initial action (arrival and secretion of substances by platelets) leads to an amplification of the response (recruitment of more platelets) rather than a dampening effect.

In the Blood Clotting Process,platelets Arrive at the Site of Damage