Science Lesson 3 Vocabulary

Question 1

Signs and feeling of a disease

Answer 1

Symptoms

Question 2

the body system that fights disease

Answer 2

immune system

Question 3

blood cells that are part of the immune system that kill pathogens

Answer 3

White blood cells

Question 4

chemicals made by white blood cells to help fight disease

Answer 4

antibodies

Question 5

the body’s ability to defend itself against certain kinds of pathogens

Answer 5

immunity

Question 6

substances made to prevent certain diseases

Answer 6

vaccines

Question 7

a sticky liquid that coats the body’s passageways. It traps and destroys pathogens

Answer 7

mucus

Question 8

small hairs that line the body’s air passages. They trap pathogens and push them out of the body

Answer 8

cilia

Question 9

liquid in the mouth that kills many pathogens

Answer 9

saliva

Question 10

this keeps many pathogens from entering the body. Oil and sweat on this may destroy many pathogens

Answer 10

skin

Question 11

in the stomach and they destroy many pathogens

Answer 11

digestive juices

Question 12

name the body’s FIRST defenses against disease

Answer 12

skin, cilia, mucus, saliva, and digestive juices

Question 13

how do white blood cells fight infectious diseases

Answer 13

they kill pathogens, some are large enough to destroy them by surrounding them

Question 14

name 3 ways to avoid disease

Answer 14

avoid the person sick, wash items that could be touched by people often, like door handles and light switches, wash your hands with warm water and soap often, put band-aids on cuts.