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.
A. chest pain is the correct answer
Answer: The substance that the mother probably used is <em>nicotine.</em>
Explanation:
When a pregnant woman smokes it can cause the baby to have difficulty with their respiratory function, low birth weight, and be shorter than average babies. Many of the babies born by a smoking mother does have colic.
The mother can suffer from pregnancy complications if she has been a smoker.
Smoking while pregnant, can also cause issues with the baby's brain. It is important to not smoke while you are pregnant. If a person smokes and finds out they're pregnant, they should stop immediately.
