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Questions and Answers
What was the outcome of the experiments conducted by Shorey and Detwiler in the early 20th century?
What was the outcome of the experiments conducted by Shorey and Detwiler in the early 20th century?
- Understanding of embryonic development process
- Characterization of neurotrophic and neurotrophic action
- Identification of the role of muscle tissues in nerve cell sustenance (correct)
- Discovery of NGF protein
What was the significant finding of Hamburger and Rita Levi-Montalcini's 1949 study?
What was the significant finding of Hamburger and Rita Levi-Montalcini's 1949 study?
- Characterization of muscle tissue influence on nerve cell sustenance
- Discovery of NGF protein
- Identification of neurotrophic and neurotrophic action
- Observation of naturally occurring nerve cell death during embryonic development (correct)
What was the contribution of Levi-Montalcini's work in the discovery of NGF?
What was the contribution of Levi-Montalcini's work in the discovery of NGF?
- Discovery of neurotrophic and neurotrophic action
- Biochemical identification of NGF protein
- Characterization of embryonic development process
- Development of tissue culture assays for assessing growth factor levels (correct)
What is the term introduced by Wilhelm His to describe the branched extensions of neurons?
What is the term introduced by Wilhelm His to describe the branched extensions of neurons?
What was the significance of NGF in the field of neuroscience?
What was the significance of NGF in the field of neuroscience?
What is the primary function of the axonal growth cone?
What is the primary function of the axonal growth cone?
What was the outcome of Cohen's biochemical analysis of tumor extracts?
What was the outcome of Cohen's biochemical analysis of tumor extracts?
What is the difference between the approaches of His and Ramón y Cajal, and Ross Harrison?
What is the difference between the approaches of His and Ramón y Cajal, and Ross Harrison?
What is the primary focus of the class in terms of organizing connections?
What is the primary focus of the class in terms of organizing connections?
What was the primary goal of Ross Harrison's experiment on axon formation?
What was the primary goal of Ross Harrison's experiment on axon formation?
What was the outcome of Bueker's experiment involving tumor, snake venom, and mouse submaxillary gland?
What was the outcome of Bueker's experiment involving tumor, snake venom, and mouse submaxillary gland?
Who is credited with the conceptualization of the axonal growth cone as a specialized structure?
Who is credited with the conceptualization of the axonal growth cone as a specialized structure?
What was the method used by Ross Harrison in his experiment on axon formation?
What was the method used by Ross Harrison in his experiment on axon formation?
What was the key concept behind the chemoaffinity hypothesis proposed by Roger Sperry?
What was the key concept behind the chemoaffinity hypothesis proposed by Roger Sperry?
What was the main idea behind Paul Weiss's Resonance Theory?
What was the main idea behind Paul Weiss's Resonance Theory?
What was the primary experimental approach used by Roger Sperry in the 1940s to test the chemoaffinity hypothesis?
What was the primary experimental approach used by Roger Sperry in the 1940s to test the chemoaffinity hypothesis?
According to John Langley's experiments, what was observed after cutting preganglionic fibers?
According to John Langley's experiments, what was observed after cutting preganglionic fibers?
What was the focus of research in the 1980s and 1990s related to the chemoaffinity hypothesis?
What was the focus of research in the 1980s and 1990s related to the chemoaffinity hypothesis?
What was the conclusion drawn from Paul Weiss's experiments in 1934?
What was the conclusion drawn from Paul Weiss's experiments in 1934?
What concept was anticipated by John Langley's speculation on chemical relations and chemotactic guidance?
What concept was anticipated by John Langley's speculation on chemical relations and chemotactic guidance?
What is the key difference between the Contact Guidance Theory and the Resonance Theory?
What is the key difference between the Contact Guidance Theory and the Resonance Theory?
What is the current understanding of the molecules controlling cell-cell interactions in the nervous system?
What is the current understanding of the molecules controlling cell-cell interactions in the nervous system?
What is an example of specific molecules guiding axons to different targets in the nervous system?
What is an example of specific molecules guiding axons to different targets in the nervous system?
What is the main function of fast axonal transport?
What is the main function of fast axonal transport?
What was the outcome of Paul Weiss's ligature experiment?
What was the outcome of Paul Weiss's ligature experiment?
What was the significance of introducing radioactive tracers in axoplasmic transport studies?
What was the significance of introducing radioactive tracers in axoplasmic transport studies?
What is a challenge in understanding the organization of connections in the nervous system?
What is a challenge in understanding the organization of connections in the nervous system?
What is the approximate speed of fast axonal transport?
What is the approximate speed of fast axonal transport?
What is the critical role of axonal transport in axonal growth?
What is the critical role of axonal transport in axonal growth?
What is the role of microtubules in axonal transport?
What is the role of microtubules in axonal transport?
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