Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 12, Problem 26RQ
What does a mechanically gated channel respond to?
- physical stimulus
- chemical stimulus
- increase in resistance
- decrease in resistance
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What does a mechanically gated channel respond to?a. physical stimulusb. chemical stimulusc. increase in resistanced. decrease in resistance
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Which of the following changes to an action potential indicates a larger stimulus?
Increased frequency
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Increased amplitude
Increased speed
describe how the membrane potential varies over time AND distance as a graded potential move across the cell body of a neuron. Describe the movement of ions within the cell body as the graded potential moves away from the stimulus
Chapter 12 Solutions
Anatomy & Physiology
Ch. 12 - In 2003, the Nobel Prize in Physiology or Medicine...Ch. 12 - Visit this site...Ch. 12 - Visit this site...Ch. 12 - View the University of Michigan Webscope...Ch. 12 - What happens across the membrane of an...Ch. 12 - Visit this site...Ch. 12 - Watch this video...Ch. 12 - Watch this video...Ch. 12 - Which of the following cavities contains a...Ch. 12 - Which structure predominates in the white matter...
Ch. 12 - Which part of a neuron transmits an electrical...Ch. 12 - Which term describes a bundle of axons in the...Ch. 12 - Which functional division of the nervous system...Ch. 12 - What type of glial cell provides myelin for the...Ch. 12 - Which part of a neuron contains the nucleus?...Ch. 12 - Which of the following substances is least able to...Ch. 12 - What type of glial cell is the resident macrophage...Ch. 12 - What two types of macromolecules are the main...Ch. 12 - If a thermoreceptor is sensitive to temperature...Ch. 12 - Which of these locations is where the greatest...Ch. 12 - How long does all the signaling through the...Ch. 12 - What is the target of an upper motor neuron?...Ch. 12 - What ion enters a neuron causing depolarization of...Ch. 12 - Voltage-gated Na+ channels open upon leaching what...Ch. 12 - What does a ligand-gated channel require in order...Ch. 12 - What does a mechanically gated channel respond to?...Ch. 12 - Which of the following voltages would most likely...Ch. 12 - Which of the following is probably going to...Ch. 12 - How much of a change in the membrane potential is...Ch. 12 - A channel opens on a postsynaptic membrane that...Ch. 12 - What neurotransmitter is released at the...Ch. 12 - What type of receptor requires an effector protein...Ch. 12 - Which of the following neurotransmitters is...Ch. 12 - What responses are generated by the nervous system...Ch. 12 - When eating food, what anatomical and functional...Ch. 12 - Multiple sclerosis is a demyelinating disease...Ch. 12 - Which type of neuron, based on its shape, is best...Ch. 12 - Sensory fibers, or pathways, are referred to as...Ch. 12 - If a person has a motor disorder and cannot move...Ch. 12 - What does it mean for an action potential to be an...Ch. 12 - The conscious perception of pain is often delayed...Ch. 12 - If a postsynaptic cell has synapses from five...Ch. 12 - Why is the receptor the important element...
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Similar questions
- A specific stimulus produces a receptor potential by :-a- inhibiting Na + influx into receptorb- inhibiting K + efflux from receptorc- enhancing Na + influx into receptord- enhancing K + efflux from receptorarrow_forwardDistinguish between the functional classes of neurons: sensory/afferent, carry sensory input; interneurons, integration/processing decisions; and motor/efferent, carry motor commands (output)arrow_forwardExplain the propagation of an action potential. 1. Start with a stimulus 2. Follow through two points along the axon and include voltage-gated channels involved and their behavior. 3. Passive versus active flow as well as saltatory conductionarrow_forward
- When they are not being stimulated, neurons have an electrical charge across their membranes called the resting potential. This potential is______ charged inside. When a neuron receives a sufficiently large stimulus, and reaches a potential called the_______ , it produces an action potential. This causes the neuron to become_____ charged inside.arrow_forwardIf an axon receives two stimuli close together in time, only one AP occurs. Why?arrow_forwardWhat channels are open at 3 if this was recorded on the axon of a sensory neuron? K+ voltage gated channels K+ leak channels Na+ ligand gated channels Na+ stimulus gated channels Na+ voltage gated channels Ca+ voltage gated channels Cl- ligand gated channelsarrow_forward
- When neurotransmitters contact a muscle cell's receptor proteins, those receptors change their shape and let ions go through the membrane. The receptors are an example of: A. voltage sensitive channels B. tension-sensitive channels C. ligand-activated channelsarrow_forwardWhich is the correct order of the firing of a neuron? a. resting potential, threshold, action potential, refractory period b. resting potential, threshold, refractory period, action potential c. action potential, resting potential, refractory period, threshold d. threshold, resting potential, refractory period, action potentialarrow_forwardWhich of the following best describes the behavior of a gated channel? It stays open continuously when stimulated. It opens more frequently in response to a given stimulus. It opens more widely as the stimulus becomes stronger. It requires a stimulus to change from closed to openarrow_forward
- Gustatory neurons are stimulated by_____which causes the opening of____gated ion channels. These cell fire______arrow_forwardWhich type of synapse is better suited for vision and hearing, and why?A. Metabotropic synapses because they produce quick, brief effectsB. Metabotropic synapses because they produce longerlasting effectsC. Ionotropic synapses because they produce quick, brief effectsD. Ionotropic synapses because they produce longerlasting effectsarrow_forwardWhich of the following ion movements would be expected to produce an IPSP? Opening a calcium channel Opening a potassium channel Simultaneous opening of a chloride channel and a sodium channel Opening a sodium channelarrow_forward
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