Goal of 1st line of defense: to prevent pathogen from entering body
There are physical and chemical barriers where all exposed body entrances would be. Ex. Skin, mouth, eyes, nostrils.
-The skin: composed of tough dead cells that are constantly shedding- physical barrier bc it prevents pathogen from latching on. Skin also contains sweat and oil glands that secrete acids and oils that prevent the growth of pathogens- chemical barrier. Also, sweat contains lysozyme.
Saliva and tears: protect the mouth and the eyes from pathogen invasion. Saliva and tears contain lysozyme.
Nostrils, digestive + respiratory tracts lined with another barrier: mucous.
Lack of control since Carl doesn't want to do what his father signed him up for
Answer:
Food and Drug Administration
Explanation:
The CDC deals with disease control and outbreaks, and the Environmental one deals with the environment and how our actions affect it. The only one that logically makes sense (and is related to food) is the FDA.
The intensity of an activity refers to the amount of energy exerted while performing an exercise.
Answer:
Members take a long time to build trust.
Explanation:
:)
