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The release of calcium ions initiates muscle contractions. Watch this video

Anatomy & Physiology | 1st Edition | ISBN: 9781938168130 | Authors: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, & 6 more ISBN: 9781938168130 330

Solution for problem 3 Chapter 10

Anatomy & Physiology | 1st Edition

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Anatomy & Physiology | 1st Edition | ISBN: 9781938168130 | Authors: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, & 6 more

Anatomy & Physiology | 1st Edition

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Problem 3

The release of calcium ions initiates muscle contractions. Watch this video (http://openstaxcollege.org/l/ calciumrole) to learn more about the role of calcium. (a) What are T-tubules and what is their role? (b) Please also describe how actin-binding sites are made available for cross-bridging with myosin heads during contraction.

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34. Neurons and Nervous System (34.1) NS Consists of Neurons and Glia  NS have two categories of cells: o Neurons generate and transmit electrical signals called action potentials o Glia provide support and maintain extracellular environment  Neuron o Cell body o Dendrites: receive signals from other neurons o Axon: transmits signals to other cells o Axon hillock: signals are generated o Axon terminals: form synapses  Synapse: gap where two neurons communicate o Neurotransmitters cross synapse to transmit signals  3 Stages of information processing o Afferent neurons (sensory)  From sense receptors, send neurons to CNS o Interneurons  Tell motor neurons to contract muscles o Efferent neurons (motor)  Neural networks vary from simple to complex o Reflexes to active movement (34.2) Neurons Generate and transmit electrical signals  Neurons have membrane potential (difference in electrical charge) across membrane o Action potential is a sudden large change in the membrane potential  In a neuron that is not signaling, resting potential is appx. -60 millivolts o Inside cell is negative at rest  Active transport proteins in the membrane create concentration gradients o Na+-K+ pump moves Na+ ions from inside exchanges for K+ from outside. Requires energy o Low -> high concentration (against conc

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Chapter 10, Problem 3 is Solved
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Textbook: Anatomy & Physiology
Edition: 1
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, & 6 more
ISBN: 9781938168130

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The release of calcium ions initiates muscle contractions. Watch this video