Parent’s Signature: _________________
Level 1
Name:
Date:
Subject: How the Body Fights Disease
HOMEWORK
Directions: Answer using complete sentences! Use the information you have been given to answer questions
about: How the Body Fights Disease
about: How the Body Fights Disease
Your body has many different ways to fight diseases. It tries to keep the pathogens from getting too far into
your body. Different body parts have features that block or kill pathogens. One of the body’s defenses is the skin.
Layers of dead skin cells stop pathogens from entering the body. Oil contained in the skin also helps to kill
pathogens. The mouth has enzymes that kill pathogens. The stomach has acids that kill pathogens. The nose
has mucus and hairs that help to trap pathogens so they cannot get further into the body.
your body. Different body parts have features that block or kill pathogens. One of the body’s defenses is the skin.
Layers of dead skin cells stop pathogens from entering the body. Oil contained in the skin also helps to kill
pathogens. The mouth has enzymes that kill pathogens. The stomach has acids that kill pathogens. The nose
has mucus and hairs that help to trap pathogens so they cannot get further into the body.
1. What does the body do to fight diseases?
2. How do our different body parts keep us from getting diseases?
3. How does the skin help to protect the body against diseases?
Parent’s Signature: ____________________
Level 2
Name:
Date:
Subject: How the Body Fights Disease
HOMEWORK
Directions: Answer using complete sentences! Use the information you have been given to answer questions
about: How the Body Fights Disease
about: How the Body Fights Disease
Your body has many different ways to fight diseases. It tries to keep the pathogens from getting too far into
your body. Different body parts have features that block or kill pathogens. One of the body’s defenses is the skin.
Layers of dead skin cells stop pathogens from entering the body. Oil contained in the skin also helps to kill
pathogens. The mouth has enzymes that kill pathogens. The stomach has acids that kill pathogens. The nose
has mucus and hairs that help to trap pathogens so they cannot get further into the body. The respiratory
system’s airways and lungs are lined with cilia. Cilia are hair-like structures that are covered with mucus. They
move back and forth in a sweeping motion. The mucus on the cilia catches dirt, dust, and germs. The cilia then
push mucus up toward your throat. Then, you swallow the mucus or you spit it out. In this way the cilia and
mucus work together to help keep dirt, dust, and germs out of your lungs. Sneezing is also a way of getting rid of
dirt, dust, and pathogens.
your body. Different body parts have features that block or kill pathogens. One of the body’s defenses is the skin.
Layers of dead skin cells stop pathogens from entering the body. Oil contained in the skin also helps to kill
pathogens. The mouth has enzymes that kill pathogens. The stomach has acids that kill pathogens. The nose
has mucus and hairs that help to trap pathogens so they cannot get further into the body. The respiratory
system’s airways and lungs are lined with cilia. Cilia are hair-like structures that are covered with mucus. They
move back and forth in a sweeping motion. The mucus on the cilia catches dirt, dust, and germs. The cilia then
push mucus up toward your throat. Then, you swallow the mucus or you spit it out. In this way the cilia and
mucus work together to help keep dirt, dust, and germs out of your lungs. Sneezing is also a way of getting rid of
dirt, dust, and pathogens.
1. How does the body try to fight disease and what do different body parts do to help with this?
2. How does the skin help to defend the body against diseases?
3. What do the mouth, stomach, and nose do to defend the body against diseases?
Parent’s Signature: ________________
Level 3
Name:
Date:
Subject: How the Body Fights Disease
HOMEWORK
Directions: Answer using complete sentences! Use the information you have been given to answer questions
about: How the Body Fights Disease
about: How the Body Fights Disease
Your body has many different ways to fight diseases. It tries to keep the pathogens from getting too far into
your body. Different body parts have features that block or kill pathogens. One of the body’s defenses is the skin.
Layers of dead skin cells stop pathogens from entering the body. Oil contained in the skin also helps to kill
pathogens. The mouth has enzymes that kill pathogens. The stomach has acids that kill pathogens. The nose has
mucus and hairs that help to trap pathogens so they cannot get further into the body. The respiratory
system’s airway and lungs are lined with cilia. Cilia are hair-like structures that are covered with mucus.
They move back and forth in a sweeping motion. The mucus on the cilia catches dirt, dust, and germs.
The cilia then push mucus up toward your throat. Then, you swallow the mucus or you spit it out. In this way
the cilia and mucus work together to help keep dirt, dust, and germs out of your lungs. Sneezing is also a way
of getting rid of dirt, dust, and pathogens. White blood cells attack disease pathogens when they enter the body.
When your skin is broken, such as when you get a cut, pathogens can enter the body through the cut. White
blood cells travel through blood vessels to the area of the cut. Then, they destroy harmful pathogens.
Sometimes, a cut will ooze white or yellow liquid. This is called pus. Pus is actually a pool of dead white blood
cells and other tissues. If pus is present, it means the cut is infected.
your body. Different body parts have features that block or kill pathogens. One of the body’s defenses is the skin.
Layers of dead skin cells stop pathogens from entering the body. Oil contained in the skin also helps to kill
pathogens. The mouth has enzymes that kill pathogens. The stomach has acids that kill pathogens. The nose has
mucus and hairs that help to trap pathogens so they cannot get further into the body. The respiratory
system’s airway and lungs are lined with cilia. Cilia are hair-like structures that are covered with mucus.
They move back and forth in a sweeping motion. The mucus on the cilia catches dirt, dust, and germs.
The cilia then push mucus up toward your throat. Then, you swallow the mucus or you spit it out. In this way
the cilia and mucus work together to help keep dirt, dust, and germs out of your lungs. Sneezing is also a way
of getting rid of dirt, dust, and pathogens. White blood cells attack disease pathogens when they enter the body.
When your skin is broken, such as when you get a cut, pathogens can enter the body through the cut. White
blood cells travel through blood vessels to the area of the cut. Then, they destroy harmful pathogens.
Sometimes, a cut will ooze white or yellow liquid. This is called pus. Pus is actually a pool of dead white blood
cells and other tissues. If pus is present, it means the cut is infected.
1. Explain how the body tries to fight diseases and what different body parts do to assist in this process.
2. Explain how the skin protects the body against diseases.
3. Explain how the mouth, stomach, and nose protect the body against diseases.
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