LS Ch 17 Review

Disease causing agents such as bacteria and viruses are called _______________.

• pathogens

• antibodies

• villians

• particles

What is the primary function of your immune system?

• to create organelles

• to protect your body from pathogens

• to aid in blood circulation

• to protect your bones and muscles

First line defenses include

• skin

• hair

• mucus

• all of the above

Skin protects a person from pathogens by _______________.

• being thin and easy to allow things through

• shedding occasionally

• serving as a protective layer that keeps foreign objects out

• allowing bacteria to enter if it is healthy

Which parts of the respiratory system keep pathogens from reaching the inside of your body? (select all that apply)

• nose hair

• lungs

• mucus

• blood

Select 3 ways that your digestive system works to protect you form pathogens that have entered your body on food?

• by using stomach acids to neutralize the pathogen

• causing you to vomit

• causing you to have diarrhea

• causing you to burp

White blood cells and inflammatory response is part of what line of defense?

• first line

• second line

• third line

• fourth line

What is the best definition of antibodies?

• antibiotics that help you when you are sick

• organs that create pathogens

• pathogens that enter the bloodstream

• proteins that attach to antigens and make them useless

Bacteria are ______________ than plant and animal cells.

• smaller

• larger

All bacteria cause illness and disease.

• TRUE

• FALSE