Tips and Tricks on Neural Control And Coordination


In the resting nerve fibre, the cytoplasm just beneath its membrane is electronegative relative to the layer of extracellular fluid (ECF) just outside the membrane. If the two sides of the membrane are connected by galvanometer (double beam cathode ray oscilloscope) the inner side is seen to possess a negative potential of about 70 mV relative to the outer side. This is called the resting membrane potential.

At an electrical synapse, ionic current spreads directly from one cell to another through gap junctions. Each gap junction contains is hundred or so tubular protein structures called connexons that from tunnel to connect the cytosol of the two cells.

Cerebrum is divided into two hemispheres by a prominent longitudinal fissure. The two hemispheres are connected by a bundle of transverse fibres called corpus callosum. The anterior part of corpus callorum is curved and is called genu while the posterior part is called splenium.

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