Answer is: platelet plug
When platelets stick to each other and to the blood
vessel they form a plug in the hole of the vessel. This process is called platelet aggregation.
Before the plug forms, a platelet will stick to the blood vessel (adhesion), change its shape
and signal other platelets to come help (activation and secretion). Then they
stick to each other (aggregation).
Answer:
is defined as the group in an experiment or study that does not receive treatment by the researchers and is then used as a benchmark to measure how the other tested subjects do.
