FUND. OF ANATOMY & PHYSIOLOGY F16 PKG
10th Edition
ISBN: 9781323431122
Author: Martini
Publisher: PEARSON C
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Chapter 12, Problem 10RQ
Summary Introduction
To determine:
The two types of neuroglia that insulate neuron cell bodies and axons in the peripheral nervous system from their surroundings.
Concept introduction:
The two types of the neuroglia in the peripheral nervous system (PNS) include the satellite cells and the schwann cells. The satellite cells regulate the concentration of the interstitial fluid. The schwann cells form a myelin sheath of lipids around the neurons for the efficient conduction of the impulse waves.
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Name and describe six types of neuroglia.
Which type of neuroglia controls the extracellular fluid environment around neuron cell bodies in the CNS? In the PNS?
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Chapter 12 Solutions
FUND. OF ANATOMY & PHYSIOLOGY F16 PKG
Ch. 12 - Prob. 1CPCh. 12 - Describe the two functional divisions of the...Ch. 12 - 3. Identify the two components of the efferent...Ch. 12 - Prob. 4CPCh. 12 - Name the structural components of a typical...Ch. 12 - Classify neurons according to their structure.Ch. 12 - Classify neurons according to their function.Ch. 12 - Prob. 8CPCh. 12 - Prob. 9CPCh. 12 - Prob. 10CP
Ch. 12 - Prob. 11CPCh. 12 - Prob. 12CPCh. 12 - Prob. 13CPCh. 12 - What effect would decreasing the concentration of...Ch. 12 - Define action potential.Ch. 12 - Identify the steps involved in the generation and...Ch. 12 - Prob. 17CPCh. 12 - Which of the following axons is myelinated: one...Ch. 12 - Prob. 19CPCh. 12 - Prob. 20CPCh. 12 - What effect would blocking voltage-gated calcium...Ch. 12 - Prob. 22CPCh. 12 - Prob. 23CPCh. 12 - Prob. 24CPCh. 12 - Prob. 25CPCh. 12 - Prob. 26CPCh. 12 - Prob. 27CPCh. 12 - LEVEL 1 Reviewing Facts and Terms 1. Label the...Ch. 12 - Prob. 2RQCh. 12 - Prob. 3RQCh. 12 - Prob. 4RQCh. 12 - The neural cells responsible for the analysis of...Ch. 12 - Depolarization of a neuron plasma membrane will...Ch. 12 - Prob. 7RQCh. 12 - Receptors that bind acetylcholine at the...Ch. 12 - What are the major components of (a) the central...Ch. 12 - Prob. 10RQCh. 12 - Prob. 11RQCh. 12 - If the resting membrane potential of a neuron is...Ch. 12 - Prob. 13RQCh. 12 - What is the difference between anterograde flow...Ch. 12 - What is the functional difference among chemically...Ch. 12 - State the all-or-none principle cf action...Ch. 12 - Prob. 17RQCh. 12 - Prob. 18RQCh. 12 - What are the structural and functional differences...Ch. 12 - Describe the events that occur during nerve...Ch. 12 - Prob. 21RQCh. 12 - Prob. 22RQCh. 12 - Prob. 23RQCh. 12 - In multiple sclerosis, there is intermittent and...Ch. 12 - Prob. 25RQCh. 12 - Prob. 1CCCh. 12 - Prob. 2CC
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- Describe the structure and function of the four types of CNS neuroglial cells and the two types of PNS neuroglial cells?arrow_forwardWhat causes depolarization of a neuron membrane potential?arrow_forwardWhich functional segment of a neuron contains chemically gated channels? Which functional segments contain voltage-gated channels?arrow_forward
- Which statement is true regarding the action potential process? 1) the repolarization phase must occur prior to depolarization 2) hyperpolarization allows for Na+ and K+ ions to move into and out of the cell 3) the action potential process only occurs at the nodes of ranvier in myelinated axons 4) depolarization occurs because voltage gated K+ channels allow K+ ions to rush into the cellarrow_forwardName this type of neuron.arrow_forwardDepolarization of a neuron plasma membrane will shift the membrane potential toward (a) 0 mV. (b) -70 mV. (c) -90 mV. (d) a, b, and c are correct.arrow_forward
- How do depolarization and repolarization occur in the conductive segment of a neuron?arrow_forwarda) In the absence of K+ leak channels, what would happen to the resting membrane potential of a neuron? Why is this the case? b) Depolarization of the axon membrane opens voltage-gated Na+ channels. By what mechanism does opening of these Na+ channels open other voltage-gated Na+ channels downstream of the action potential? c) Following an action potential, how does the neuron return to its resting membrane potential?arrow_forwarda) How does E allow faster transmission of signals? b) What would happen if G has a lack of Calcium? c) Most neurons have the style of junction (chemical) shown in the diagram, rather than gap (electrical) junctions. Why does this make sense?arrow_forward
- What effect would decreasing the concentration of extracellular potassium ions have on the membrane potential of a neuron?arrow_forwardIs the resting membrane potential the bases of conduction in nerves and muscle fibers and the presecutors of contraction in muscles?arrow_forwardIn SA nodal cells the upstroke of the action potential:A)is characterized by a substantial overshoot component.B)results from rapid inward movement of Na+.C)results from inward movement of Ca2+D)results from inward movement of K+.arrow_forward
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