
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Title
Subtitle
temporal summation
spatial summation
Unidirectional and non-degrading
Action potential
o Depolarization; Na gates opening
o Repolarization: K gates opening
o Hyperpolarization: K gates closing
Movement down an axon
Refractory periods
Myelin and Axon size effect
Action potential stimulated release
Neurotransmitter (NT) recycling
Neurotransmitters
o Acetylcholine
Biological amines (Serotonin, norepinephrine and epinephrine)
Single amino acids (Glutamate and GABA)
Fast and Slow effects and Receptor effects
The Autonomic System
Division definition
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- Describe the four stages of an action potential in what is happening in each stagearrow_forwardCorrectly label the following parts of a myelinated axon. CNS PNS Oligodendrocyte Schwann cell Myelin Nerve fiber Dendrite Reset Zoom Is this from the CNS or the PNS?arrow_forwardGive examples of graded potential, resting potential and action potential seen in neurons.arrow_forward
- Action potentials are “all or none.” Discuss this statement with reference to specific types of channels (60%). Explain what determines the frequency of action potentials (40%).arrow_forwardContinuos propagation of action potentials occurs in myelinated axons and is faster than conduction in unmyelinated axons. True Falsearrow_forwardthe potassium leak channels were suddenly blocked in a resting neuron, what would happen to its resting membrane potential?arrow_forward
- What is a graded action potential ,when talking about the nervous system, in human anatomy?arrow_forwardexplain the simplified version of the synaptic process resulting in long-term potentiationand explain the roles of AMPA and NMDA receptors; glutamate; sodium, calcium, and magnesium ions in strengthening a synapse.arrow_forwardMyelination beginning Аxon Internode Oligodendrocytes Neurolemma The myelin sheath and The myelin sheath in the CNS Nodes Мyelin Schwann cell| of Ranvier myelination in the PNS (b)arrow_forward
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