4. Draw and label a neuron. Be sure to label the following structures: Dendrites, axon, myelin sheath, node of Ranvier, Schwann's cells, axon terminals, cell body, and the nucleus.
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- Which term describes a bundle of axons in the peripheral nervous system? nucleus b. ganglion tract nerveView the University of Michigan Webscope (http://openstaxcollege.org/l/nervefiber) to see an electron micrograph of a cross-section of a myelinated nerve fiber. The axon contains microtubules and neurofilaments, bounded by a plasma membrane known as the axolemma. Outside the plasma membrane of the axon is the myelin sheath, which is composed of the tightly wrapped plasma membrane of a Schwann cell. What aspects of the cells in this image react with the stain that makes them the deep, dark, black color, such as the multiple layers that are the myelin sheath?Match the neuron structure with its correct function or description. 1. Structure that receives stimuli and carries impulses to the cell body Grey matter 2. Part of the neuron that releases a chemical transmitter across the synapse + Myelin sheath 3. Cells that protect, nourish, and defend neurons + White matter 4. Structure that contains the neuron's nucleus and is the site of the neuron's cell metabolism : Synapse 5. The gap between two myelin sheaths that allows faster conduction of action potential 6. Lipid, fatty insulating layer around some axons that protects the neurons and speeds the impulses along the neuron + Dendrite 7. Unmyelinated neurons in the CNS + Axon 8. Structure that transmits impulses away from the cell body to another neuron, the muscles, or glands Axon terminal 9. Myelinated neurons in the CNS Cell body 10. The gap or junction between two neurons or between a neuron and a muscle Node of Ranvier * Glial cell
- _5.Fill in interval. Neurons in the ____________ in the _____________ respond best to the form and shape of complex images as opposed to single lines or dots.m12. An EPSP causes (depolarization/repolarization/hyperpolarization). These occur most often on what part of the neuron?___________________________________; ___________________________________.13, An IPSP causes (depolarization/repolarization/hyperpolarization). These occur most often on what part of the neuron?___________________________________; ___________________________________.14. Where on the neuron does integration occur (approximately)?___________________________________.16. Neurons that process similar kinds of information are organized into what are called “neuron or neuronal pools.”Different ways of processing information occurs in these pools, depending on their function, and how they are organized. What are the two types of processing of information described below?___________________________________One neuron stimulates the next, which stimulates the next, and so on; the most clear cut example of this type of processing would be innate reflexes.___________________________________ This type of process can activate many pathways simultaneously, and is essential for high-level processes such as complex thinking and problem solving.
- Label the 4 major regions of the neuron and describe their functions.1. Label the parts of this neuron: 2. Explain the function of each component in #1. 3. Mark the following statements as TRUE or FALSE: An action potential is something that only occurs at synapses. Afferent pathways send sensory information to the CNS for processing. When they are at rest, neurons are more positively charged inside than outside the cell. FALSE Action potentials originate at the axon terminal and move towards the dendrites. An action potential travels down the length of the neuron with the help of voltage-gated calcium channels. Neurons can only have one action potential and must be recycled by glia once they have depolarized. At axon terminals, calcium influx stimulates vesicle release. Ligand-gated ion channels open in response to a molecule binding to them. 4. For each FALSE statement in #3, explain why it is incorrect. Page 1 of 1 https://menlo.schoology.com/assets/bundles/js/pdftron-webviewer/a.&preloadWorker-1&pdfnet3D0&pageHistory=1&useDownloader=0&subzero=1Identify and label the following structures on the neuron model figure below: cell body, dendrites, neuron nucleus, neurolemma, axon hillock, nucleus of Schwann cell, Nissl bodies, myelin sheath, axon, node of Ranvier, axon terminals (of neurons synapsing with model neuron), endoneurium (refer to Figure 10.6). 3) 11
- 8. Label the following diagram with the terms: sensory neuron, sensory receptor, interneuron, motor neuron, effector, axon, dendrite, cell body, Schwann cell, node of Ranvier. Note that some terms may be used more than once. The 3 main types of Neurons1. Label the parts of this neuron: 2. Explain the function of each component in #1.4. Label the structures in the following diagram of a neuron.?