EBK HUMAN PHYSIOLOGY
7th Edition
ISBN: 9780133983401
Author: Silverthorn
Publisher: YUZU
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Question
Chapter 8, Problem 21RQ
Summary Introduction
To determine: The sequence of events after neurotransmitter binds to a receptor on a postsynaptic neuron by arranging the given terms.
Introduction: Neurotransmitters are chemical molecule used for cell communication. The neurotransmitter may be excitatory or inhibitory depending on its function. The various sequence of events occurs when neurotransmitters are transported from one cell to another cell.
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Which 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 close
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Chapter 8 Solutions
EBK HUMAN PHYSIOLOGY
Ch. 8 - Organize the following terms describing functional...Ch. 8 - Where do neurohormone-secreting neurons terminate?Ch. 8 - What is the difference between a nerve and a...Ch. 8 - Draw a chain of three neurons that synapse on one...Ch. 8 - What is the primary function of each of the...Ch. 8 - Name the two glial cell types that form myelin....Ch. 8 - Given the values in Table 8.2, use the Nernst...Ch. 8 - Would a cell with a resting membrane potential of...Ch. 8 - Would the cell membrane depolarize or...Ch. 8 - Match each ions movement with the type of graded...
Ch. 8 - Prob. 11CCCh. 8 - What is the difference between conductance and...Ch. 8 - If you put ouabain, an inhibitor of the Na+-K+...Ch. 8 - The pyrethrin insecticides, derived from...Ch. 8 - When Na+ channel gates are resetting, is the...Ch. 8 - A stimulating electrode placed halfway down an...Ch. 8 - Place the following neurons in order of their...Ch. 8 - Prob. 18CCCh. 8 - Prob. 19CCCh. 8 - Prob. 20CCCh. 8 - Prob. 21CCCh. 8 - Prob. 22CCCh. 8 - Classify the H+-neurotransmitter exchange as...Ch. 8 - Prob. 24CCCh. 8 - Prob. 25CCCh. 8 - Is Na+-dependent neurotransmitter reuptake...Ch. 8 - In Figure 8.24e, assume the postsynaptic neuron...Ch. 8 - In the graphs of Figure 8.24a, b, why doesnt the...Ch. 8 - Prob. 29CCCh. 8 - Prob. 30CCCh. 8 - List the three functional classes of neurons, and...Ch. 8 - Somatic motor neurons control __________, and...Ch. 8 - Prob. 3RQCh. 8 - Prob. 4RQCh. 8 - Prob. 5RQCh. 8 - Prob. 6RQCh. 8 - Axonal transport refers to the (a) release of...Ch. 8 - Match the numbers of the appropriate...Ch. 8 - Arrange the following events in the proper...Ch. 8 - List the four major types of ion channels found in...Ch. 8 - Prob. 11RQCh. 8 - An action potential is (circle all correct...Ch. 8 - Choose from the following ions to fill in the...Ch. 8 - What is the myelin sheath?Ch. 8 - List two factors that enhance conduction speed.Ch. 8 - Prob. 16RQCh. 8 - Draw and label a graph of an action potential....Ch. 8 - Prob. 18RQCh. 8 - Prob. 19RQCh. 8 - Create a map showing the organization of the...Ch. 8 - Prob. 21RQCh. 8 - Prob. 22RQCh. 8 - Prob. 23RQCh. 8 - Prob. 24RQCh. 8 - The presence of myelin allows an axon to (choose...Ch. 8 - Define, compare, and contrast the following...Ch. 8 - Prob. 27RQCh. 8 - Prob. 28RQCh. 8 - Prob. 29RQCh. 8 - Prob. 30RQCh. 8 - An unmyelinated axon has a much greater...Ch. 8 - The GHK equation is sometimes abbreviated to...Ch. 8 - In each of the following scenarios, will an action...
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- 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 channelsarrow_forwardRead the following statements (a) The resting nerve membrane is freely permeable to Na*, K* ions and negatively charged proteins. (b) The activity of Na* - K* pump is responsible for maintaining resting membrane potential. (c) The resting membrane is impermeable to negatively charged proteins present in the axoplasm. Choose the option representing correct statements. b only a and b b and c a, b and carrow_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
- Suppose that in a certain neuron, negatively charged protein molecules found in the intracellular compartment were suddenly able to diffuse through the cell membrane freely. What would be the result on this cell's resting membrane potential and action potential threshold? A) The resting potential would hyperpolarize and the action potential threshold would not change. B) The resting potential would depolarize and the action potential threshold would decrease. C) The resting potential would depolarize and the action potential threshold would not change. D) The resting potential would hyperpolarize and the action potential threshold would increase.arrow_forwardWhere are neurotransmitter receptors located?(A) the nuclear membrane(B) the nodes of Ranvier(C) the postsynaptic membrane(D) synaptic vesicle membranesarrow_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
- When a neuron fires an action potential, closing of the voltage-gated Na+ channels helps to bring an end to _________. A) the depolarizing phase of the action potential B) the repolarizing phase of the action potential C) graded potential changes D) the resting potential E) vesicle fusion at the synapsearrow_forwardAction potentials and graded potentials both…A) Propagate long distances through neural structures, without attenuation in their amplitude.B) Can directly excite or inhibit neurons.C) Can propagate at speeds of up to 120 meters per second.D) Involve voltage-gated Nav and Kv channels.E) Are capable of triggering synaptic exocytosis in neurons of the vertebrate retinaarrow_forwardWhat force(s) act(s) to move potassium ions from the inside of the cell to the outside when a neuron is about to enter the hyperpolarization phase of an action potential? O a) The sodium-potassium pump Ob) The electrical (electrostatic) gradient only Oc) The concentration (chemical) gradient only d) Both the concentration (chemical) gradient and the electrical (electrostatic) gradientarrow_forward
- Which statement is true regarding the neuron synapse? B) binging of a neurotransmitter on the postsynaptic neuron membrane can generate an action potential in that neuron C) the binding of a neurotransmitter always causes an excitatory effect on that cell, never inhibitory D) the presynaptic and pastsynaptic neuron membranes are not physically separatedarrow_forwardWhat happens when a resting neuron’s membranedepolarizes?(A) There is a net diffusion of Na+out of the cell.(B) The equilibrium potential for K+(EK) becomesmore positive.(C) The neuron’s membrane voltage becomesmore positive.(D) The cell’s inside is more negative than the outsidearrow_forwardexcitatory and 15 inhibitory postsynaptic potentials appear simultaneously on the plasmatic membrane of motoneuron. Answer the question A and fulfill the task B:A) Will this neuron generate the efferent nervous impulses if the amplitude of single EPSP and IPSP appeared on the axonal hillock`s membrane equals 1 mV? Why?B) Name the state of this neuron and name the type of summationarrow_forward
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