How can you guys... HELP ME!!! :[?

You know how analogies goes? Well it’s the same, but Biology style. You’ll have to give the definition for some and the vocab word for others. I did like 20 others, these are just the ones I couldn’t get:

1. First response team: arrives at the scene of a crime; enzymes of the saliva “patrol”:_
2. Electrical wires: transfer energy w/ electrical currents; _: transfer electrical impulses to muscles.
3. Garbage men: pick up trash; _: helps remove remaining food from gum line.
4. Murderer: kills people; virus kills:_
5. City hall: makes decision about the city; brain:_
6. New housing projects: additional people; third chin & love handle(o.0?):additional___cells
7. Laid off person: removed from employment;_: removed from the scalp.
8. dirty neighborhood: build-up of sewage;_: build up of undigested waste.
9. police department: where the police force is stationed/trained; lymph node:_
10. airport: where people arrive and depart;_: arrival and departure of ingested material.
11. Fire: produces heat and destroys things in its path;_: produces heat and destroys pathogens.
12. putting the city on alert: protection from further danger;_: preventative measures from further infection
13. Informant (“rat”): known criminal that notifies police of criminal activity;_: weakened virus allowed in body to prevent infection
14. criminal hangouts: where criminals are located_: common location of pathogens.
15. bus: public location out of a city; bladder:_
16. thermostat: controls the temp. of buildings; hypothalamus:_

* For those who try to help and answer all of these… THANK YOU SOOO MUCH for taking time outta your life to help me! You are awesooome! P.S. That was the last question. Thank you :DDD