Human Body Systems Test

Front

What is the main function of the trachea?

Back

The trachea is a tube that connects the throat to the lungs, allowing air to pass through during breathing.

Front

What role does the diaphragm play in the respiratory system?

Back

The diaphragm is a dome-shaped muscle that contracts and relaxes to help with the process of breathing.

Front

What is the main organ of the circulatory system?

Back

The heart is the main organ of the circulatory system, responsible for pumping blood throughout the body.

Front

What is the primary function of the circulatory system?

Back

The circulatory system transports nutrients and waste throughout the body.

Front

What are alveoli?

Back

Alveoli are tiny air sacs in the lungs where gas exchange occurs, allowing oxygen to enter the blood and carbon dioxide to be expelled.

Front

What are bronchi?

Back

Bronchi are the two main branches of the trachea that lead into each lung, allowing air to flow in and out.

Front

How does the diaphragm assist in breathing?

Back

When the diaphragm contracts, it creates a vacuum that pulls air into the lungs; when it relaxes, air is pushed out.

Front

What is the function of the lungs?

Back

The lungs are responsible for gas exchange, taking in oxygen and expelling carbon dioxide.

Front

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

Back

The heart pumps oxygenated blood to the body and returns deoxygenated blood to the lungs.

Front

What is the purpose of the respiratory system?

Back

The respiratory system is responsible for taking in oxygen and expelling carbon dioxide.