Human Body Systems

Front

What is the first line of defense in the immune system?

Back

Skin

Front

What do sneezing and coughing do for the body?

Back

They force pathogens out of your body.

Front

What holds bones together to form joints?

Back

Ligaments

Front

What is the large dome-shaped muscle used in breathing?

Back

Diaphragm

Front

What type of muscles are found inside many internal organs?

Back

Smooth muscles

Front

What is the function of the immune system?

Back

To protect the body from pathogens and diseases.

Front

What are pathogens?

Back

Microorganisms that can cause disease, such as bacteria and viruses.

Front

What is the role of antibodies in the immune system?

Back

To identify and neutralize pathogens.

Front

What is the difference between skeletal and smooth muscles?

Back

Skeletal muscles are voluntary and control movement, while smooth muscles are involuntary and control internal organs.

Front

What is the function of the heart in the circulatory system?

Back

To pump blood throughout the body.