NROB60H3 Chapter Notes - Chapter 2: Golgi'S Method, Franz Nissl, Nissl Body
27 Nov 2013
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Document Summary
Neurons are the most important cells for the unique functions of the brain. It is the neurons that sense changes in the environment, communicate these changes to other neurons, and command the body"s responses to these sensations. Glia/ glial cells are thought to contribute to rain function mainly by insulating, supporting, and nourishing neiboring neurons. Neurons are 40-200 times smaller than most cells which range of 0. 01- 0. 05 mm in diameter. Progress in cellular neuroscience was not possible before the development of the compound microscope in the late seventeenth century. Early in the 19th century scientists discovered how to fix tissues by immersing them in formaldehyde and developed a special device called a microtome to make very thin slices. These technical advances spawned the field of histology the microscopic study of the structure of tissues. The final breakthrough in neurohistology was the introduction of stains that could selectively color some parts of the cells in brain tissue.
