Circulatory and Respiratory Systems

Front

What are alveoli?

Back

Alveoli are tiny air sacs in the lungs where gas exchange occurs. They allow oxygen to enter the blood and carbon dioxide to be removed.

Front

Where does gas exchange occur in the lungs?

Back

Gas exchange occurs in the alveoli.

Front

What is the function of red blood cells?

Back

Red blood cells carry oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues back to the lungs.

Front

What is the trachea?

Back

The trachea, also known as the windpipe, is a tube that connects the throat (pharynx) to the lungs, allowing air to pass through.

Front

What system includes the diaphragm, trachea, and alveoli?

Back

These structures are part of the respiratory system.

Front

What is the role of the diaphragm in breathing?

Back

The diaphragm is a muscle that contracts and relaxes to help draw air into the lungs and push it out.

Front

What are bronchi?

Back

Bronchi are the main passageways that branch from the trachea into the lungs, leading to smaller bronchioles.

Front

What are bronchioles?

Back

Bronchioles are small air passages in the lungs that branch off from the bronchi and lead to the alveoli.

Front

What is hemoglobin?

Back

Hemoglobin is a protein in red blood cells that binds to oxygen and carries it throughout the body.

Front

What is the function of white blood cells?

Back

White blood cells are part of the immune system and help the body fight infections and diseases.