Which structures produce a fluid to protect the body in the first line of defense? Check all that apply. hair stomach mouth eyes skin. My tests wants 4 answers

The correct options are: stomach, mouth, eyes, skin

Explanation:

Eyes: Our tears contain an enzyme which is beneficial in breaking down the cell wall of many bacteria's. The blinking of the eye also stops many bacteria's o enter into the eye.

Skin: The skin of a person acts as a barrier between any foreign pathogen and the body of a person. The hair present on the skin tend to trap many microorganisms and prevent them from entering into the body.

Mouth: Our mouth produces saliva which has many enzymes to kill pathogens in food.

Stomach: The stomach acids tend to kill any pathogens which enter through swallowing.