o bserve the mechanical lung function model. Note that it consists of a heavy glass bell jar with a rubber sheeting tied over its wide open end. Its narrow upper opening is plugged with a rubber stopper through which a glass Y tube is passed. Small rubber balloons are fastened to the arms of the Y (fig. 54.1). What happens to the balloons when the rubber sheeting is pulled downward?
What happens when the sheeting is pushed upward?
How do you explain these changes?
What part of the respiratory system is represented by the rubber sheeting?_
the bell jar?_
the balloons? _
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.