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Topic: Action Potential and the Pathway a Receptor Takes.
Action potential is a short lasting event in which electrical membrane potential of a cell rises and falls. It occurs in several kinds of animal cells known as neurons, muscle cells and endocrine cells. Action potential is the first step to what leads to contraction of a muscle (Sherwood, 2010). This is known as nerve impulses. The skin is the largest sensory organ that allows reception of pain, pleasure and pressure. The type neuron involved is the sensory neuron an external stimulation to pressure, temperature, light, or sound. All this alter the ionic permeabilities of the membrane and its voltage. The main requirement for generation of action potential is through membrane voltage at the hillock is raised above the threshold for initialization of impulse. Action potentials are mainly generated by excitatory postsynaptic potentials, neuron-transmitter are released by pre-synaptic molecules that bind to receptors on the post-synaptic (Sherwood, 2010). This bond helps open ionic channels that change the permeability of the cell membrane hence membrane potential. Neuron transmission can also occur through ele.............
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