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- A blackboardlearn.utep.edu/ultra/courses/_132250_1/cl/outline Remaining Time: 40 minutes, 50 seconds. A Question Completion Status: 9. 10 11 QUESTION 9 Suppose that we have a virtual model of a nerve cell and we are trying to generate action potentiats that propagate down the entire length of the axon. We have set up this model neuron to have myelination down a portion of the axon, but have a large gap in the middle of the axon. In our simulations, we cannot seem to get the action potential from the node preceding the gap, into the gap, and then into the following node. What change could we make to our axon model to connect action potentials across this gap? The picture below shows the model neuron that we are building. If you are having trouble viewing this image, please access it at https://www.drop box.com/s/95ii2dyrgfwknog/Exam%204.%20Axon.png?dl=0 O Increase the density of ion channels in the gap. O Increase the thickness of the myelination. O Decrease the diameter of the axon. O…15) Examine the diagram of a reflex arc shown below. In this case, pain from tissue damage to the hand results in a response where muscles move the hand away from the painful stimulus. ST. gridld.doi vd ehow or2 1o notelvib dot Figure 38-10 Biology; Life on Earth, 8/e © 2008 Pearson Prentice Hall, Inc. barostin 20 a) On the diagram above, label the motor neuron, the sensory neuron, the interneuron, and the effector. b) List any way or ways in which the nervous system will determine the intensity of the pain the example above. Corobral cortexSelect the correct answer to complete the statement: "Neuronopathy leads to" O Axon degeneration as well as loss of the myelin surrounding it, but the neuronal cell body remains intact O Neuron loss is irreversible and includes degenerationo of all its cytoplasmic contents, dendrites, axons and myelin sheath. O Seperation of the myelin lamellae or the selective loss of myelin (demyelination) Interference with neurotransmission
- A/An _____ synapse is formed when a presynaptic neuron synapses with the cell body of a postsynaptic neuronA single glutamatergic neuron (EPSP) becomes activated and sends glutamate to a post- synaptic neuron. That post-synaptic neuron, however, does not generate an action potential. Give a reason why an action potential is not generated in the postsynaptic neuron. Edit View Insert Format Tools Table 12pt v Paragraph v BIU T? vDrag and drop the terms or phrases into the correct spots so they are the matching characteristics for the neurons. You can use some more than once. CHARACTERISTICS FUNCTION DENDRITES CELL BODY AXONS MYELIN long dendrite cell body inside CNS short axon SENSORY NEURON short dendrites cell body outside CNS long axon myelinated axon myelinated dendrite & axon white & grey matter AP away from CNS AP towards CNS AP within CNS INTERNEURON MOTOR NEURON
- How is the resting membrane potential determined in neurons? Edit View Insert Format Tools Table Paragraph v BIUA ev T?v 12pt vnswer After an action potential is generated in a neuron, it travels to the end of the axon. Explain how the absolute refractory period prevents the action potential from travelling back to the cell body, and why it does not prevent the action potential from moving down to the end of the axon. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph 启 Q Arial 10pt A Ix ...respondus password is 515b73158335f6 Question 12 An inhibitory postsynaptic potential (IPSP. is associated with O hyperpolarization O opening of voltage-regulated channels O a change in sodium ion permeability O lowering the threshold for an action potential to occur < Previous
- will auto-submit when time expires espondus password is 515b73158335f6 Question 17 The part of the neuron that normally receives stimuli is called O a Schwann cell O a neurolemma a dendrite Oan axon < PreviousPart D- Organization of the Sympathetic Nervous System The divisions of the autonomic nervous system are distinctly organized. Place the term into the bin that best describes its location. • View Available Hint(s) Reset Help Short preganglionic fiber Long preganglionic fiber Long postganglionic fiber Chain ganglia Thoracolumbar origins Vagus nerve (CN X) Ganglia within target tissue Pelvic nerves Sympathetic division Parasympathetic division SubmitNeurons in the ____________ in the _____________ respond best to the form and shape of complex images as opposed to single lines or dots.
