1. skin
2. pathogen
3. bacterial, viral
4*. immune response
5*. adaptive or acquired
6. leukocytes
7*. cell-mediated immune response, humoral immune response
8. B-cells, T-cells
9*. the helper T-cell, cytotoxic t-cells
10. antibody
11. nodes
* = not 100% sure
Answer: Blood loss regulation
Explanation:
Positive feed back is response of body in which there is an increase in the effect of small disturbance and the effect is intensified on a system. The magnitude of the effect increases.
In case of blood loss the body releases clotting factors that helps in preventing the body from severe blood loss.
The body releases clotting factors and these clotting factors tend to release more and more clotting factors that begins the process of blood clotting in vessels.
This is an example of positive feedback which acts as a life saving cascade.
