A dendrite Dendrites, also dendrons, are branched protoplasmic extensions of a nerve cell that propagate the electrochemical stimulation received from other neural cells to the cell body, or soma, of the neuron from which the dendrites project. Electrical stimulation is transmitted onto dendrites by upstream neurons via synapses which are located at various points throughout the dendritic tree. Dendrites play a critical … A myelin sheath An axon A terminal button Myelin sheath part of a neuron relay system speeds up a neural signal. Expert answered| Janet17 |Points 30317|Dendrite
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A. The propagation of signal through a neuron initiates at the dendrite, enters the cell body, and is transferred from the axon.
B. A neuron that specializes in producing acetylcholine
During an action potential, the gated channels for sodium open and, because there is such a difference in concentration, the sodium rushes int the axon. This makes the axon much more positive in charge . This positivity propagates along the axon until it reaches the end of the axon, where it triggers release of neurotransmitters into the synapse.
Explanation: Neurotransmitters from presynaptic cells are recieved by the dendrites of postsynaptic cells. There are myriad dendrites on each neuron that then propagate this signal to the some (cell body), allowing the signal to be passed down the axon to another neuron.
Explanation: The depolarization of the neural axon durin an action potential is driven by the influx of sodium ions, entering through voltage-gated sodium channels. Following this stage, voltage-gated potassium channels are stimulated, allowing potassium ions to exit the axon and causing hyperpolarization. The sodium-potassium pump restores the ions to their original positions in preparation for the next action potential, known as repolarization.
Explanation: The tiny gaps in between myelin sheaths are referred to as nodes of Ranvier. The action potential will jump from node to node as it moves down the axon.
Explanation: Myelin is a fatty compound that surrounds the axons of white matter neurons. Its purpose is to increase the speed of action potentials.
Neurons carry messages throughout the body, including sensory information from external stimuli and signals from the brain to different muscle groups in the body. In order to understand exactly how a neuron works, it is important to look at each individual part of the neuron. The unique structures of the neuron allow it to receive ...
The soma produces the proteins that the other parts of the neuron, including the dendrites, axons, and synapses, need to function properly.
Soma. The soma, or cell body, is where the signals from the dendrites are joined and passed on. The soma and the nucleus do not play an active role in the transmission of the neural signal. Instead, these two structures serve to maintain the cell and keep the neuron functional. 1 .
Transmit information to the cell body. Most neurons possess these branch-like extensions that extend outward away from the cell body. These dendrites then receive chemical signals from other neurons, which are then converted into electrical impulses that are transmitted toward the cell body.
Dendrites are tree-like extensions at the beginning of a neuron that help increase the surface area of the cell body. These tiny protrusions receive information from other neurons and transmit electrical stimulation to the soma. Dendrites are also covered with synapses.
May or may not have a myelin covering. Range dramatically in size, from 0.1 millimeters to over 3 feet long 2 . The myelin surrounding the neurons protects the axon and aids in the speed of transmission. The myelin sheath is broken up by points known as the nodes of Ranvier or myelin sheath gaps.
Axons connect with other cells in the body including other neurons, muscle cells, and organs. These connections occur at junctions known as synapses. The synapses allow electrical and chemical messages to be transmitted from the neuron to the other cells in the body.
The axon is the long, slender projection of a neuron that conducts electrical impulses away from the cell body. Dendrites are the branched projections of a neuron that recieve electrical stimulation from synapses and convey them to the cell body. The soma is the cell body of the neuron that contains the cell nucleus
The depolarization of the neural axon during an action potential is driven by an influx of sodium ions, entering through voltage-gated sodium channels. Following this stage, voltage-gated potassium channels are stimulated, allowing potassium ions to exit the axon and causing hyperpolarization. The sodium-potassium pump then restores the ions to their original positions in preparation for the next action potential, known as repolarization.
The Myelin Sheath is a fatty substance that covers the axon and helps speed up impulses. A neuron is a nerve cell. Dendrites are the message receiving part of a neuron, and axons are the message sending part. A synapse is the gap between the terminal buttons of the axon of one neuron and the dendrites of another neuron. Soma is a term synonymous with cell body.
After traveling through the cell body and down the axon hillock, the signal is sent out by the axon to the axon terminal, or synaptic terminal. There, synaptic vesicles containing neurotransmitters are released into the synaptic cleft (the space between two neurons). Synaptic vesicles fuse with the membrane at the axon and release neurotransmitter into the synaptic cleft. The neurotransmitters diffuse toward the postsynaptic neuron and bind to receptors to begin the process again. Once the signal reaches an effector organ , the neurotransmitters can elicit their ultimate effect.
The myelin sheath coats the axon of a neuron and speeds up the transmission of messages. Myelin is a fatty coating that is unable to perpetuate the action potential signal. As a result, the signal jumps over the myelinated areas, bypassing much of the axon and speeding up transmission. This process is known as saltatory conduction.
A neuron that specializes in producing dopamine.
Myelin is a white, fatty compound that surrounds the axons of white matter neurons. Its purpose is to increase the speed of an action potential.