Muscarinic receptors are present only in parasympathetic system True False
Added by Jonathan R.
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Step 1: Muscarinic receptors are G-coupled receptors present in both the parasympathetic and sympathetic nervous systems. Show more…
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True (T) or False (F). ____ AMPA receptors bind ACh. ____ AMPA receptors have a high Ca2+ conductance. ____ AMPA receptors are ionotropic. ____ AMPA receptors are blocked by Mg2+ at resting membrane potential. ____ NMDA receptors are metabotropic. ____ NMDA receptors bind glutamate. ____ NMDA receptors are unresponsive to the neurotransmitter at resting membrane potential. ____ Ionotropic synaptic transmission may involve the activation of G-proteins. ____ Presynaptic inhibition involves a reduction in calcium influx at the presynaptic terminal. ____ A particular neurotransmitter molecule may have an excitatory effect at some synapses and an inhibitory effect at others. ____ At the resting membrane potential, all of the permeant ions are in equilibrium.
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The only site where Norepinephrine is the main neurotransmitters at the synapse between a sympathetic postganglionic nerve fiber and the effector organ True or False?
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Which statement about afferent and efferent pathways is not true? a. Sympathetic and parasympathetic pathways carry only efferent information. $b .$ Visceral afferents carry information about physiological functions of which we are not consciously aware. $c .$ The voluntary division of the efferent portion of the peripheral nervous system executes conscious movements. $d .$ The cranial nerves and spinal nerves are part of the peripheral nervous system. $e .$ Afferent and efferent axons never travel in the same nerve.
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