EBK ANATOMY & PHYSIOLOGY: THE UNITY OF
7th Edition
ISBN: 8220102796409
Author: SALADIN
Publisher: YUZU
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Textbook Question
Chapter 12, Problem 8TF
Myelinated nerve fibers conduct signals more rapidly than unmyelinated ones because they have nodes of Ranvier
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The concentration of potassium ions inside a nerve cell membrane is higher than the concentration of sodium ions outside the mem-brane, yet the inside of the membrane (where the cation concentra-tion is higher) is negative to the outside. Explain this observation in terms of permeability properties of the membrane.
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Chapter 12 Solutions
EBK ANATOMY & PHYSIOLOGY: THE UNITY OF
Ch. 12.1 - Prob. 1BYGOCh. 12.1 - Prob. 2BYGOCh. 12.1 - Prob. 3BYGOCh. 12.1 - Prob. 1AYLOCh. 12.1 - Prob. 2AYLOCh. 12.1 - Prob. 3AYLOCh. 12.1 - Prob. 4AYLOCh. 12.2 - Prob. 4BYGOCh. 12.2 - Prob. 5BYGOCh. 12.2 - Prob. 6BYGO
Ch. 12.2 - Prob. 7BYGOCh. 12.2 - Prob. 1AYLOCh. 12.2 - Prob. 2AYLOCh. 12.2 - Prob. 3AYLOCh. 12.2 - Prob. 4AYLOCh. 12.2 - Prob. 5AYLOCh. 12.3 - Prob. 8BYGOCh. 12.3 - Prob. 9BYGOCh. 12.3 - Prob. 10BYGOCh. 12.3 - Prob. 1AYLOCh. 12.3 - Prob. 2AYLOCh. 12.3 - Prob. 3AYLOCh. 12.3 - Prob. 4AYLOCh. 12.4 - Prob. 11BYGOCh. 12.4 - Prob. 12BYGOCh. 12.4 - Prob. 13BYGOCh. 12.4 - Prob. 14BYGOCh. 12.4 - Prob. 15BYGOCh. 12.4 - Prob. 16BYGOCh. 12.4 - Prob. 17BYGOCh. 12.4 - Prob. 1AYLOCh. 12.4 - Prob. 2AYLOCh. 12.4 - Prob. 3AYLOCh. 12.4 - Prob. 4AYLOCh. 12.4 - Prob. 5AYLOCh. 12.4 - Prob. 6AYLOCh. 12.4 - Prob. 7AYLOCh. 12.4 - Prob. 8AYLOCh. 12.4 - Prob. 9AYLOCh. 12.5 - Prob. 18BYGOCh. 12.5 - Prob. 19BYGOCh. 12.5 - Prob. 20BYGOCh. 12.5 - Prob. 21BYGOCh. 12.5 - Prob. 1AYLOCh. 12.5 - Prob. 2AYLOCh. 12.5 - Prob. 3AYLOCh. 12.5 - Prob. 4AYLOCh. 12.5 - Prob. 5AYLOCh. 12.5 - Prob. 6AYLOCh. 12.5 - Prob. 7AYLOCh. 12.5 - Prob. 8AYLOCh. 12.5 - Prob. 9AYLOCh. 12.6 - Prob. 22BYGOCh. 12.6 - Prob. 23BYGOCh. 12.6 - Prob. 24BYGOCh. 12.6 - Prob. 25BYGOCh. 12.6 - Prob. 1AYLOCh. 12.6 - Prob. 2AYLOCh. 12.6 - Prob. 3AYLOCh. 12.6 - Prob. 4AYLOCh. 12.6 - Prob. 5AYLOCh. 12.6 - Prob. 6AYLOCh. 12.6 - Prob. 7AYLOCh. 12.6 - Prob. 8AYLOCh. 12.6 - Prob. 9AYLOCh. 12.6 - Prob. 10AYLOCh. 12.6 - Prob. 11AYLOCh. 12.6 - Prob. 12AYLOCh. 12.6 - Prob. 13AYLOCh. 12.6 - Prob. 14AYLOCh. 12 - The integrative functions of the nervous system...Ch. 12 - The highest density of voltage-gated ion channels...Ch. 12 - The soma of a mature neuron lacks a. a nucleus. b....Ch. 12 - The glial cells that fight infections in the CNS...Ch. 12 - Posttetanic potentiation of a synapse increases...Ch. 12 - An IPSP is_____of the postsynaptic neuron. a. a...Ch. 12 - Prob. 7TYRCh. 12 - Prob. 8TYRCh. 12 - Prob. 9TYRCh. 12 - Prob. 10TYRCh. 12 - Prob. 11TYRCh. 12 - Prob. 12TYRCh. 12 - Prob. 13TYRCh. 12 - Prob. 14TYRCh. 12 - Prob. 15TYRCh. 12 - A myelinated nerve fiber can produce action...Ch. 12 - Prob. 17TYRCh. 12 - Prob. 18TYRCh. 12 - Prob. 19TYRCh. 12 - Prob. 20TYRCh. 12 - Prob. 1BYMVCh. 12 - Prob. 2BYMVCh. 12 - Prob. 3BYMVCh. 12 - Prob. 4BYMVCh. 12 - Prob. 5BYMVCh. 12 - Prob. 6BYMVCh. 12 - Prob. 7BYMVCh. 12 - Prob. 8BYMVCh. 12 - Prob. 9BYMVCh. 12 - Prob. 10BYMVCh. 12 - Prob. 1TFCh. 12 - Prob. 2TFCh. 12 - Prob. 3TFCh. 12 - Prob. 4TFCh. 12 - Excitatory postsynaptic potentials lower the...Ch. 12 - Prob. 6TFCh. 12 - Prob. 7TFCh. 12 - Myelinated nerve fibers conduct signals more...Ch. 12 - Prob. 9TFCh. 12 - Prob. 10TFCh. 12 - Schizophrenia is sometimes treated with drugs such...Ch. 12 - Hyperkalemia is an excess of potassium ill the...Ch. 12 - Suppose a poison were to slow down the Na+-K+...Ch. 12 - Prob. 4TYCCh. 12 - Prob. 5TYC
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- _____are short, branched extensions of neurons that receive information. The____is a cytoplasmic extension of the neuron that conveys an electrical signal along its length and releases chemical signals from its endings.arrow_forwardThe traces below show the action potential waveforms in an external meidum of different concentrations of * 40 100% 50% 33% 40 1 2 time (msec) calcium chloride potassium O sodiumarrow_forwardFigure 35.3 Which of the following statements is false? The soma is the cell body of a nerve cell. Myelin sheath provides an insulating layer to the dendrites. Axons carry the signal from the soma to the target. Dendrites carry the signal to the soma.arrow_forward
- Axon can't branch Afferent neurons are generally bipolar neurons Most neurotransmitters are synthesized in the cytosol of a neuron GABA is the most common inhibitory neurotransmitter in the central nervous system Tendons are regular dense connective tissue that connect muscles to bonearrow_forwardNonearrow_forwardA typical intracellularly recorded nerve action potential approximates 80 mV. Why were the recorded action potentials from the earth worm so much smaller? They were recorded from much smaller axons They were recorded extracellularly They were recorded following very short durations of stimulation They were recorded following very small depolarizationsarrow_forward
- The endplate potential is produced by too spread Na* channels simultaneous flow of Na* and K* ions flow of K* only negative currents saltatory transmission from the nerve to musclearrow_forwardFill in the blank: The difference in electrical charge between the inside and the outside of a nerve cell membrane is called the_______________________ potential.arrow_forwardNerve transmission and communication with other neurons. DI it restores the membrane potential the chemical that talks between one neuron and the other neuron the point between the neuron and the muscle transmits impulse to dendrite it carries receptors on its surface it produces the neurotransmitter 1. Neurotransmitter 2. Presynaptic membrane 3. Postsynaptic membrane 4. Nat-K+ pump 5. Neuromuscular junction 6. Axonarrow_forward
- The giant axon of the squid (Figure Q11–3) occu-pies a unique position in the history of our understandingof cell membrane potentials and nerve action. When anelectrode is stuck into an intact giant axon, the membranepotential registers –70 mV. When the axon, suspended in abath of seawater, is stimulated to conduct a nerve impulse,the membrane potential changes transiently from –70 mVto +40 mV.arrow_forwardThe rattlesnake alerts enemies to its presence with a rattle—aset of modified scales at the tip of its tail. Describe the distinctroles of gated ion channels in initiating and moving a signalalong the nerve from the snake’s head to its tail and then fromthat nerve to the muscle that shakes the rattlearrow_forwardPlease help me to reorder the items below to correctly label each number in the diagram.arrow_forward
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