Which of the choices below describes the ANS? Show
sensory neurons that convey information from somatic receptors in the head, body wall, and limbs and from receptors from the special senses of vision, hearing, taste, and smell to the CNS motor fibers that conduct nerve impulses from the CNS to skeletal muscles motor fibers that conduct nerve impulses from the CNS to smooth muscle, cardiac muscle, and glands sensory and motor neurons that supply the digestive tract motor fibers that conduct nerve impulses from the CNS to smooth muscle, cardiac muscle, and glands Which of the following is NOT a difference between graded potentials and action potentials? Graded potentials can result from the opening of chemically gated channels; action potentials require the opening of voltage-gated channels. Graded potentials occur along dendrites, whereas action potentials occur along axons. Spatial summation is used to increase the amplitude of a graded potential; temporal summation is used to increase the amplitude of an action potential. Greater stimulus intensity results in larger graded potentials, but not larger action potentials. Spatial summation is used to increase the amplitude of a graded potential; temporal summation is used to increase the amplitude of an action potential. When calcium ions enter the synaptic terminal, When calcium ions enter the synaptic terminal, the inside of the receiving neuron becomes more positive. neurotransmitter molecules are quickly removed from the synaptic cleft. they cause vesicles containing neurotransmitter molecules to fuse to the plasma membrane of the sending neuron. they cause an action potential in the sending neuron. they cause vesicles containing neurotransmitter molecules to fuse to the plasma membrane of the sending neuron. Which of the following is not a function of astrocytes? guide the migration of young neurons, synapse formation, and helping to determine capillary permeability support and brace neurons anchor neurons to blood vessels control the chemical environment around neurons provide the defense for the CNS provide the defense for the CNS In what way does the interior surface of a cell membrane of a resting (nonconducting) neuron differ from the external environment? The interior is ________. positively charged and contains less sodium negatively charged and contains less sodium Strong stimuli cause the amplitude of action potentials generated to increase. True False The generation of an action potential in a neuron requires the presence what type of membrane channels? leakage channels voltage-gated channels chemically gated channels membrane channels are not required voltage-gated channels Which of the following describes the excitatory postsynaptic potential? short distance hyper polarization opens K+ or Cl- channels moves membrane potential away from threshold short distance depolarization short distance depolarization
Which of the following is not true of graded potentials? They are short-lived. They increase amplitude as they move away from the stimulus point. They can be called postsynaptic potentials. They can form on receptor endings. They increase amplitude as they move away from the stimulus point Which of the following neurotransmitters inhibits pain and is mimicked by morphine, heroin, and methadone? nitric oxide endorphin Which membrane potential occurs because of the influx of Na+ through chemically gated channels in the receptive region of a neuron? excitatory postsynaptic potential excitatory postsynaptic potential Which neuron circuit pattern is involved in the control of rhythmic activities such as breathing? parallel after-discharge circuit reverberating circuit What are the differences between graded potentials and action potentials?The main difference between graded potential and action potential is that graded potentials are the variable-strength signals that can be transmitted over short distances whereas action potentials are large depolarizations that can be transmitted over long distances.
Which of the following is not a difference between graded potentials and action potentials quizlet?Which of the following is NOT a difference between graded potentials and action potentials? Graded potentials occur along dendrites, whereas action potentials occur along axons. Greater stimulus intensity results in larger graded potentials, but not larger action potentials.
What are two major differences between graded and action potentials?
Which is an accurate difference between graded and action potentials quizlet?Action potentials are triggered by membrane depolarization to threshold. Graded potentials are responsible for the initial membrane depolarization to threshold.
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Which of the following is not a difference between graded potentials and action potentials?
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