Which body system works closely with the respiratory system to ensure oxygen delivery?

Which of the following structures is NOT part of the upper respiratory tract?

Which of the following statements about the lungs is true?

Alveoli are tiny hollow air sacs where gas exchange occurs.

The epiglottis prevents food or liquid from entering the esophagus.

The lower respiratory tract includes the trachea, lungs, bronchi, and alveoli.

The ________ is the major entrance and exit for the respiratory system.

The right lung contains how many lobes?

The structure that prevents food from entering the trachea during swallowing is the:

Which of the following statements best describes the alveoli?

The respiratory system also performs functions like sensing odors and producing sound.

The diaphragm is not involved in breathing.

-osmia means what?

Py/o means?