Optional Activity

I nvestigate the microscopic structure of various plant materials. To do this, prepare very tiny, thin slices of plant specimens using a single-edged razor blade. (Take care not to injure yourself with the blade.) Keep the slices in a container of water until you are ready to observe them. To observe a specimen, place it in a drop of water on a clean microscope slide and cover it with a coverslip. Use the microscope and view the specimen using low- and high-power magnifications. Observe near the edges where your section of tissue is most likely to be one cell thick. Add a drop of dilute methylene blue or iodine-potassium-iodide stain and note if any additional structures become visible. How are the microscopic structures of the plant specimens similar to the human tissues you observed? _

How are they different?

Essentials of Human Physiology

Essentials of Human Physiology

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.

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