The Central Nervous System: The Structure Of The Nervous System

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Every organism (vertebrate or invertebrate) needs a system to function. One of these systems is Nervous System which helps in transporting the messages from brain to different parts of body. It is made up of central nervous system and peripheral nervous system. In nervous system, neurons which are considered as major player receive and transport the electric and chemical signals and are also known as communication center. Neurons are again classifies into three types; sensory neurons which transport the material carried from external stimuli, interneurons which associates the neurons within the central nervous system and motor neurons which carries signals to effector organs (Burggrean 117). Neuron is made up of dendrites, axon and cell body, which is also known as soma. An axon receives electric signals from dendrites which integrate signals to determine if a neuron will initial its own signal which is termed as Action potential or AP (Burggrean 115). AP is responsible for every impulse act to the environment like touch, memory, thought, sensations. It is also known as all-or-non …show more content…

Connect the first and second recording electrode to input 1 and input 2 respectively on the power lab. To test this equipment, put a piece of filter paper moist with 0.16 M NaCl across the electrode. Record the data and if the setup is correct then replace the moist paper with nerve and fill the chamber with Ringer’s solution. Make sure the nerve is in physical contact with each of the electrode wires and cover the chamber to prevent it from drying. Start the experiment with 10Mv and increase it each time by 10 Mv until you get at least three successful responses that has same amplitude or until you reach the stimulus voltage of

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