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Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 32, Problem 4SQ
True or false? Action potentials vary in their size
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Students have asked these similar questions
True or false?
During saltatory conduction, action potentials are regenerated at sites called gap junctions.
TRUE OR FALSE?
Do translatory conduction involves the entire length of the axon in the propagation of the action potentials?
True/False - The action potential is always the same size, regardless of the strength of excitatory signaling that a neuron is receiving.
Chapter 32 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 32 - ___ relay messages from the brain and .spinal cord...Ch. 32 - Prob. 1DAACh. 32 - Prob. 2DAACh. 32 - Prob. 3DAACh. 32 - Prob. 4DAACh. 32 - When a neuron is at rest, ______ a. it is at...Ch. 32 - Action potentials occur when ________ a. a neuron...Ch. 32 - True or false? Action potentials vary in their...Ch. 32 - Neurotransmitters are released by _______ a. axon...Ch. 32 - What chemicals is released by the axon terminals...
Ch. 32 - Which neurotransmitter is important in...Ch. 32 - Skeletal muscles are controlled by _________ a....Ch. 32 - When you sit quietly on the couch and read, output...Ch. 32 - Dorsal root ganglia contain _______ of sensory...Ch. 32 - Prob. 11SQCh. 32 - Neurons are arrested in ________ of the cell...Ch. 32 - Prob. 13SQCh. 32 - Commands to move your right arm start in the...Ch. 32 - Match each item with its description. ___ gray...Ch. 32 - Prob. 1CTCh. 32 - In human newborns, especially premature ones, the...
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- What is the difference between an action potential and a synapse? (select all that apply) The action potential moves down the axon and a synapse is between neurons. The synapse travels long distances and the action potential can only travel short distances. The action potential starts at the dendrites and the synapse starts at the ахon. The action potential is always the same and the synaptic potentials vary. the action potential involves only the postsynaptic neuron, but the synapse involves both the pre- and post-synaptic neurons.arrow_forwardrearrange these in the correct order of events in an action potential.arrow_forwardpotential across a synapse is regulated). produce an effect by targeting a different part of the process by which conduction of an actionarrow_forward
- "The local anesthetic, novacaine, used by most dentists blocks voltage-gated Na+ channels. Why would it result in numbness (loss of feeling)?" It prevents action potentials from occurring It prevents local potentials from occurring It prevents the membrane potential from returning to normal It prevents exocytosis of neurotransmitter O Oarrow_forwardWhich of the following is/are true about action potentials? Select all correct asnwers. Group of answer choices always has the same amplitude (amount of depolarization) always has the same duration information is coded through the frequency of action potentials action potentials can sum togearrow_forwardmultiple choicearrow_forward
- What does it mean to say that action potentials are “all or none”?arrow_forwardAction potential +40 55 Threshold Falled initiations Resting state -70 Stimulus 1 Refractory period Time (ms) At the peak of the action potential, which of the following are true? Select all that apply the membrane potential is close to but less that the K+ equilibrium potential |voltage gated K+ channels close voltage gated K+ channels open the membrane potential is close to but less that the Na+ equilibrium potential Voltage (mV) Depolarization Repolarizationarrow_forwardWhat is Membrane potential t how does it function for what? is it considered an nd action potential Parrow_forward
- The phases and ionic basis of an action potential. Membrane potential (mv) +30 -55 -70 Na channels open ↑ K Action potential -Pha channels open .PK Time (msec) (b) Permeability changes for Na* and K* during an action potential Membrane permeability (P)arrow_forwardLocal potentials are produced by ligand-gated channels True Falsearrow_forwardWhat letter(s) represent the starting point of an action potential?arrow_forward
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