This essays purpose is to contrast the mechanisms that underlie signal propagation within and between nerve cells. It is important that this is answered correctly, as the actions of the mechanisms are crucial for what is going on inside of our bodies.
To begin with, the basic anatomy of the neuron has to be explained, to understand what exactly happens, and how it happens. A neuron cell is most likely the supreme cell within the body of a mammal. Like any other cell, the neuron cell has the nucleus, which function is to control the activities of the cell it is in. It acts like the ‘brain’, it is the control centre.
This nucleus is based within the soma, the cell body. The cells body role is to complete biochemical processes, which are in …show more content…
If the transition is electric, the two neurons will have a direct link. They will allow small ions and molecules to pass freely between the two cells. Electrical conduction will also let AP to travel from one neuron to another. If the transition is chemical, the impulse that is received will spread to the presynaptic axon terminal. There will be a change in the voltage-gated channel of calcium; this will allow the movement of the calcium ions into the terminals of the axon. This will make the synaptic vesicles to bond with the presynaptic membrane, and release their molecules (transmitter) into the synaptic cleft. Some of these molecules will bind to receptor molecules in the postsynaptic membrane. The binding will lead to opening of ion channels in the postsynaptic membrane, meaning that ions will adjust the polarization of the postsynaptic neuron. These events could be enough to begin action potential in the axon hillock (only if the depolarization is sufficient enough, and reaches the verge of the postsynaptic neuron). Than the synaptic transmitter is removed from the synaptic cleft, meaning the transmission is short and precise. (Rosenzweig, 1999, p. 68).
Enzymes and precursors for the synthesis of the transmitters and vesicles have to be transported from the axon, into the axon terminals, where the AP will travel through and over the presynaptic membrane. Than the transmitters will be synthesized and stored within the vesicles; to travel and be released into the synapse. They will pass through the synapse, and enter through the transmitter receptor into the dendrite. All the excess transmitters will be broken down by enzymes that will be present in the extracellular
To begin with, the basic anatomy of the neuron has to be explained, to understand what exactly happens, and how it happens. A neuron cell is most likely the supreme cell within the body of a mammal. Like any other cell, the neuron cell has the nucleus, which function is to control the activities of the cell it is in. It acts like the ‘brain’, it is the control centre.
This nucleus is based within the soma, the cell body. The cells body role is to complete biochemical processes, which are in …show more content…
If the transition is electric, the two neurons will have a direct link. They will allow small ions and molecules to pass freely between the two cells. Electrical conduction will also let AP to travel from one neuron to another. If the transition is chemical, the impulse that is received will spread to the presynaptic axon terminal. There will be a change in the voltage-gated channel of calcium; this will allow the movement of the calcium ions into the terminals of the axon. This will make the synaptic vesicles to bond with the presynaptic membrane, and release their molecules (transmitter) into the synaptic cleft. Some of these molecules will bind to receptor molecules in the postsynaptic membrane. The binding will lead to opening of ion channels in the postsynaptic membrane, meaning that ions will adjust the polarization of the postsynaptic neuron. These events could be enough to begin action potential in the axon hillock (only if the depolarization is sufficient enough, and reaches the verge of the postsynaptic neuron). Than the synaptic transmitter is removed from the synaptic cleft, meaning the transmission is short and precise. (Rosenzweig, 1999, p. 68).
Enzymes and precursors for the synthesis of the transmitters and vesicles have to be transported from the axon, into the axon terminals, where the AP will travel through and over the presynaptic membrane. Than the transmitters will be synthesized and stored within the vesicles; to travel and be released into the synapse. They will pass through the synapse, and enter through the transmitter receptor into the dendrite. All the excess transmitters will be broken down by enzymes that will be present in the extracellular