HUMAN PHYSIOLOGY: AN INTEG ACCESS C
8th Edition
ISBN: 9780134714837
Author: Silverthorn
Publisher: PEARSON
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Chapter 11, Problem 10RQ
Summary Introduction
To determine: The kind of receptor found in the postsynaptic cell in the neuromuscular junction.
Introduction: A receptor is a communication link between the external stimuli and the internal environment of the body. There are several receptors present in the body of an organism to manipulate the standard internal conditions of the body.
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Chapter 11 Solutions
HUMAN PHYSIOLOGY: AN INTEG ACCESS C
Ch. 11.1 - Prob. 1CCCh. 11.1 - The central nervous system consists of the...Ch. 11.1 - Prob. 3CCCh. 11.1 - A nerve that carries both sensory and motor...Ch. 11.1 - Prob. 5CCCh. 11.1 - In what organelle is most intracellular Ca2+...Ch. 11.1 - Prob. 7CCCh. 11.1 - Prob. 8CCCh. 11.1 - Prob. 9CCCh. 11.2 - Prob. 10CC
Ch. 11.2 - Compare gating and ion selectivity of...Ch. 11.2 - Prob. 12CCCh. 11 - Prob. 1RQCh. 11 - Prob. 2RQCh. 11 - Prob. 3RQCh. 11 - Prob. 4RQCh. 11 - Neurons that secrete acetylcholine are described...Ch. 11 - List four things that can happen to autonomic...Ch. 11 - Prob. 7RQCh. 11 - Prob. 8RQCh. 11 - Somatic motor pathways a. are excitatory or...Ch. 11 - Prob. 10RQCh. 11 - Prob. 11RQCh. 11 - Compare and contrast: a. neuroeffector junctions...Ch. 11 - Prob. 13RQCh. 11 - Create a concept map comparing the somatic motor...Ch. 11 - If a target cells receptor is _______ (use items...Ch. 11 - Ganglia contain the cell bodies of (choose all...Ch. 11 - Prob. 17RQCh. 11 - You have discovered a neuron that innervates an...Ch. 11 - Prob. 19RQCh. 11 - Prob. 20RQ
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- Curare is a dangerous poison extract from plants that can block the binding site of Acetylcholine receptor channels in neuromuscular junctions. Which of the following molecular events will curare directly inhibit or prevent from occurring? Action potential traveling down the sarcoplasmic reticulum End-plate potential forming Release of calcium ions from the sarcoplasmic reticulum Release of Acetylcholine from axon terminalsarrow_forwardThe neuromuscular junction is similar to synapses in the central nervous system in that: (SELECT ALL THAT APPLY) a.) A wave of depolarization in the presynaptic terminal opens voltage gated Ca++ channels b.) Calcium entry through voltage-gated channels in the presynaptic terminal is necessary for the release of neurotransmitter c.) The neurotransmitter released from the pre-synaptic terminal binds to specific receptors on the post-synaptic side d.) The release at the neuromuscular junction of acetylcholine results in just a fraction of a mV depolarization on the post-synaptic membrane which is similar to what is seen at synapses in the central nervous system.arrow_forwardAn antibody has been isolated that binds to F-actin but not to G-actin. Whatstructural feature(s) of F-actin do you suppose the antibody binds (i.e., howis the antibody able to distinguish between these two forms of actin)?arrow_forward
- Describe the role of a presynaptic terminal, synaptic vesicles,synaptic cleft, and acetylcholine in neuromuscular function?arrow_forwardPlease fill in the blanks: A(n) ["action potential", "muscle twitch", "contraction"] consists of a wave of depolarization that moves along the plasma membrane of a neuron or a muscle fiber. This wave of depolarization is immediately followed by repolarization. Depolarization is when the cell's membrane potential becomes more ["resting", "negative", "positive"] . Depolarization occurs when calcium channels open in the plasma membrane. Repolarization is when the cell's membrane potential becomes more ["resting", "positive", "negative"] , returning the cell to its resting potential. Repolarization occurs when ["calcium", "sodium", "potassium"] channels close and ["sodium", "calcium", "potassium"] channels open.arrow_forwardThe following events happens in neuromuscular junction, putthese events in the correct temporal order: A) end plate potential (EPP), B)action potential in muscle fiber C) ACh release from presynaptic terminal D) miniature end plate potential (MEPP) E) opening ligand-gated Na+ ion channels on the endplate membrane F) opening Ca2+ channels in presynaptic terminal G) binding of ACh to nicotinic receptors on the postsynapticmembrane Attachedarrow_forward
- Following the arrival of an action potential in stimulated cells, synaptic vesicles rapidly fuse with the presynaptic membrane. This happens in less than l ms. What mechanisms allow this process to take place at such great speed?arrow_forwardHow do both negative and positive feedback contributeto the changes in membrane potential during an actionpotential?arrow_forwardMatch each type of membrane potential (resting, threshold, graded, or action) to its definition: a) The membrane potential at which voltage gated sodium channels open. b) The membrane potential that triggers the action potential. c) Change in membrane potential that may or may not reach threshold and that may be depolarizing or hyperpolarizing. d) Rapid, strong depolarization followed by immediate repolarization. This potential is self-renewing if the right ion channels are nearby.arrow_forward
- What happens to the membrane potential when a nerve cell is stimulated?arrow_forwardWhat is the typical resting membrane potential of a neuron?arrow_forwardWhich of the following factors are important in the establishment of the membrane potential at -70 mV? (i) Coulomb force; (ii) Ion concentration; (iii) Length of the axon; (iv) Number of dendrites; (v) Permeability of the cell membrane. Select one: a. (i), (iv), (v). b. (ii), (iii). c. (i), (ii), (v). d. (iii), (iv).arrow_forward
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