Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 41, Problem 3TYU
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3. Which of the following occurs first when voltage reaches the threshold level in a neuron plasma membrane? (a) voltageactivated Na+ channels open (b) K+ channels open (c) the membrane hyperpolarizes (d) neurotransmitter is released (e) K+ channels close
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The membrane potential labeled (0) is due to which of the following (when compared to (3) potential.
(A) voltage-gated Na+ channels
(B) voltage-gated K+ channels
(C) voltage-gated slow Ca++ channels
(D) voltage-gated fast Ca++ channels
(E) voltage-gated transient Ca++ channels
(F) funny channels
The membrane potential labeled (4) is due to which of the following?
(A) voltage-gated Na+ channels
(B) voltage-gated K+ channels
(C) voltage-gated slow Ca++ channels
(D) voltage-gated fast Ca++ channels
(E) voltage-gated transient Ca++ channels
(F) funny channels
Chapter 41 Solutions
Biology (MindTap Course List)
Ch. 41.1 - Describe the processes involved in neural...Ch. 41.1 - Prob. 1CCh. 41.1 - Prob. 2CCh. 41.2 - Draw and label a typical neuron and give the...Ch. 41.2 - Prob. 3LOCh. 41.2 - Prob. 1CCh. 41.2 - Prob. 2CCh. 41.2 - Prob. 3CCh. 41.3 - Prob. 4LOCh. 41.3 - Prob. 5LO
Ch. 41.3 - Prob. 6LOCh. 41.3 - Prob. 1CCh. 41.3 - Prob. 2CCh. 41.3 - Prob. 3CCh. 41.3 - Prob. 4CCh. 41.4 - Prob. 7LOCh. 41.4 - Prob. 8LOCh. 41.4 - Prob. 9LOCh. 41.4 - Prob. 1CCh. 41.4 - Prob. 2CCh. 41.4 - How are EPSPs produced? IPSPs?Ch. 41.5 - Prob. 10LOCh. 41.5 - Prob. 1CCh. 41.5 - Prob. 2CCh. 41.5 - Prob. 3CCh. 41.6 - Prob. 11LOCh. 41.6 - Prob. 1CCh. 41 - Test Your Understanding Know and Comprehend 1....Ch. 41 - Prob. 2TYUCh. 41 - Test Your Understanding Know and Comprehend 3....Ch. 41 - Saltatory conduction (a) requires more energy than...Ch. 41 - Receptors for serotonin and many other...Ch. 41 - A presynaptic neuron in the cerebrum transmits...Ch. 41 - VISUALIZE Describe the action taking place at each...Ch. 41 - Prob. 8TYUCh. 41 - Prob. 9TYUCh. 41 - Prob. 10TYUCh. 41 - Prob. 11TYUCh. 41 - Prob. 12TYUCh. 41 - Prob. 13TYU
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Watch this video (http://openstaxcollege.org/l/summation) to learn about summation. The process of converting electrical signals to chemical signals and back requires subtle changes that can result in transient increases or decreases in membrane voltage. To cause a lasting change in the target cell, multiple signals are usually added together, or summated. Does spatial summation have to happen all at once, or can the separate signals arrive on the postsynaptic neuron at slightly different times? Explain your answer.arrow_forwardWhich of the following occurs first when voltage reaches the threshold level in a neuron plasma membrane? (a) voltageactivated Na1 channels open (b) K1 channels open (c) the membrane hyperpolarizes (d) neurotransmitter is released (e) K1 channels closearrow_forwardInhibitory post synaptic membrane potential - Data Cl- Cl- Nr of GABA inside Max Postsynaptic Voltage (mV) outside receptors 140 20 hel-89- 00 140 20 - 34.428 140 40 - ףQLL-b Questions 11. What is an IPSP? 12. GABA receptors on the postsynaptic neuron function as ion channels for which ion? 13. Based on the data collected, when is it more possible for an action potential to occur? When the intracellular Cl- concentration in the postsynaptic neuron increases or when the number of GABA receptors on the postsynaptic membrane increases? 14. Explainarrow_forward
- Part 2- The Function of the Nervous System Use the information in your lecture slides and handouts to answer the following questions about the function of the nervous system (A) Label the parts of the neuron indicated below (B) Indicate using an arrow the direction an electrical impulse would move during synaptic transmission Тext (the inner part) (the outer part) neuron (cell body) (C) In the space provided, write the letter of the description that best matches the term or phrase.arrow_forward2. Neurons use action potentials to send information down the axon to stimulate a release of a chemical message for synaptic signalling. (a) Define action potential: (b) What triggers an action potential to occur? (c) Describe the four key steps involved in the generation of an action potential. Complete the task using a graph with membrane potential (mV) on the y-axis and time (ms) on the x-axis. Start with what happens when the membrane potential reaches threshold. For each step, note which channels are opening and closing, the direction of flow of ions across the plasma membrane, and the membrane potential at which this occurs. 3. Both the nervous system and the endocrine system work in parallel to maintain homeostasis around the body. Complete the table below comparing the two systems: Feature Tissue type Signal Signal pathway Nervous system Endocrine Systemarrow_forwardNeuron anatomy model - a spinal multipolar neuron • Dendrites ● Terminal ends of presynaptic neurons • Some(cell body) ● Nucleus and nucleolus Nissl (bodies) also called chromatophilic substances 0 • Neurofibrils ● Mitochondria Axolemma ● Endoneurium ● Axon Myelin with nodes of Ranvier (neurofibril nodes)arrow_forward
- Receptors for serotonin and many other neurotransmitters (a) are voltage-activated ion channels (b) permit influx of chloride ions, leading to depolarization (c) inhibit EPSPs (d) are ligand-gated channels (e) are passive ion channelsarrow_forward8,9 and 10 if possiblearrow_forward(a) Membrane potential (mv) (b) Relative membrane permeability 80 -70 600 300 100 PN O Resting membrane potential Na 2° Threshold potential Voltage-gated Na channels Voltage-gated K channels Time (msec)arrow_forward
- Action Potential of Neurons Worksheet 1. Explain how an action potential and graded potential are different. Where do they occur on a neuron? How long does each last? What kind of gates is each process using? 2. Describe the following in your own words a. resting potential C. hyperpolarization e. threshold 9. 3. What triggers an action potential? What happens to the membrane to trigger an action potential? 4. What is a positive feedback loop? How does a neuron create a positive feedback loop (self- propagation) 5. What is the role of the voltage-gated sodium channels for producing an action potential? 6. What is the role of the voltage-gated potassium channels? 7. What would happen if the voltage gated sodium channels a. Never opened? b. Stayed open longer than normal? 8. What is the absolute refractory period? What is the relative refractory period? Consider the following three diagrams of a nerve cell membrane. They show resting potential, depolarization, and hyperpolarization.…arrow_forwardHelp mearrow_forward1. The graph above represent time in milliseconds. At what time (in milliseconds) is the inside of the neuron the most positive and why? 2. Explain why the membrane potential changes at X 3. Explain what is happening at point C to the sodium and potassium ions and how this is affecting the membrane potential 4. Describe two things that contribute to the resting membrane potentialarrow_forward
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license