Front

What is the flap of tissue that closes when we eat to prevent food from entering the trachea?

Back

Epiglottis

Front

What is the concentration of oxygen in the alveoli compared to the blood capillary that causes oxygen to move by diffusion?

Back

High concentration in the alveoli and low concentration in the blood capillary.

Front

What type of transport is used to get gases in and out of our circulatory system that does not require energy?

Back

Passive transport.

Front

What happens to the volume of the rib cage and pressure when the diaphragm is contracted?

Back

The volume increases and the pressure decreases, causing inhalation.

Front

What is the role of hemoglobin in red blood cells?

Back

Hemoglobin carries oxygen throughout the body.

Front

What is the primary function of the respiratory system?

Back

To facilitate gas exchange, primarily oxygen and carbon dioxide.

Front

What structure is responsible for the exchange of gases in the lungs?

Back

Alveoli.

Front

What is the process called when oxygen moves from the alveoli into the blood?

Back

Diffusion.

Front

What muscle plays a crucial role in breathing by contracting and relaxing?

Back

Diaphragm.

Front

What is the term for the air passage that leads to the lungs?

Back

Trachea.