i. If an ANS action potential were to start at the tip of arrow A and travel to the small intestine (i.e. its effector) to decrease its activity, name all cells and neurotransmitters in order that would be used to transmit that signal. ii. What is the name we give to the collection of nerves at arrow B? A В

i. If an ANS action potential were to start at the tip of arrow A and travel to the small intestine (i.e. its effector) to decrease its activity, name all cells and neurotransmitters in order that would be used to transmit that signal. ii. What is the name we give to the collection of nerves at arrow B? A В

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter39: Information Flow And The Neuron

Section: Chapter Questions

Problem 8TYK: Which of the following statements best describes saltatory conduction? a. It inhibits direct...

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Neurons contain ________, which can receive signals from other neurons. a. axons b. mitochondria c. dendrites d. Golgibodies
Which of the following does not contribute to propagation of action potentials? a. As the area outside the membrane becomes negative, itattracts ions from adjacent regions; as the inside of the membrane becomes positive, it attracts negative ions from nearby in the cytoplasm. These events depolarize nearby regions of the axon membrane. b. The refractory period allows the impulse to travel in only one direction. c. Each segment of the axon prevents the adjacent segments from firing. d. The magnitude of the action potential stays the same as it travels down the axon. e. Up to a limit, increasing the intensity of the stimulus increases the number of action potentials.
In the propagation of a nerve impulse: a. the refractory period begins as the K+ channel opens, allowing K+ ions to flow outward along their concentrationgradient. b. Na+ ions flow out of the axon with their concentration gradient. c. positive charges lower the membrane potential to its lowestaction potential. d. gated K+ channels open at the same time as the activationgate of Na+ channels closes. e. the depolarizing stimulus lowers the membrane potential toopen the Na+ gates.
for the Spinothalamic Tract, can you show me a diagram for the pathway from the peripheral structures of the body to the location inthe brain.a. Label the location of each neuron's dendrites, cell body, and axon terminal.b. Label the location (nervous system region) of the synapses involved in this ascending pathway.c. Label the location (nervous system region) of decussations, if any.
Please note these are all one question group and should be answered as such! Which of the following statements accurately defines epineurium? A. Fluid-filled space at a synapse through which neurotransmitters diffuse B. A vesicle containing neurotransmitters in the axon terminal of a neuron C. The CT sheath that binds together the groups of fascicles, blood vessels, and lymphatic vessels in a peripheral nerve D. The branch of the ANS that adapts the body for rest and digestion Which of the following statements accurately defines sacral plexus? A. The ventral rami of C1–C4 (and a small contribution from C5) that serve the head and neck B. The ventral rami of L1–L4 that serve the pelvis and lower limb C. The ventral rami of C5–T1 that serve the upper limb D. The ventral rami of L4–S4 that serve the pelvis and lower limb
Local anesthetics "block" the action potential and therefore do not allow "pain" information to proceed to the brain and spinal cord. In the presence of these molecules (local anesthetics) 'threshold' is essentially "ignored". The molecules most logically work by: 23. a. Decreasing the intracellular [potassium] b. Blocking the opening of the voltage-gated potassium channels c. Decreasing the extracellular [sodium] d. Blocking the opening of the voltage-gated sodium channels
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 cortex
2.) what of these nerve fiber has action potenital moving toward the central nervous system ? sensory fiber sympathetic nerve fiber parasympatheic nerver fiber motor fiber question 3 : The autonimic nervous system controls involuntary muscle such as the cardiac & smooth muscle true False question 5 It is important to remeber to the neurogila cells are not direclty part of ; A.) forming insulating membrane to cover the axon b. ) anchoring neuron to capilliares or nutrient supply c. ) controlling the neuron enviornment d. ) begin a pathways for the action potential
A. Is an action potential more or less likely when the consumption of the Fugu toxin and is stimulated with a neuron with a supra-threshold stimulus? B. Which (flaccid or tonic) is the result in this case? What would be the associated physical symptoms of this condition? C. Briefly describe the pharmacological/clinical/commercial uses of this toxin and its derivatives.
Damage to the choose your answer... choose your answer... substantia nigra Previous locus coeruleus basal forebrain raphe nucleus ^ woudl affect projections using the neurotransmitter serotonin.
ILLUSTRATE the following and give their function: A. Cross Section of a Nerve B. Cross Section of the Spinal Cord C. Neuron and Neuroglia in Nerve smear NMN mmn
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=1