The area between the terminal buton of the neuron and the motor end plate of the muscle fiber is called the synaptic cleft. The neuron releases a neurotransmitter, Acetylcholine (ACH), that acts as a chemical messenger. AcH travels across the synaptic cleft to bind to receptors on the muscle fiber much like a key fits into a specific lock. The end result of the binding of AcH causes a muscle contraction to occur. True False
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Step 1: The area between the terminal button of the neuron and the motor end plate of the muscle fiber is called the synaptic cleft. Show more…
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Contraction of skeletal muscle is produced following the release of ACh by the postganglionic neuron and activation of nicotinic receptors. True False Other:
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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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