ExplanationA.True. Action potential

ExplanationA.True. Action potentials could be generated in neuron X if nerve terminals c isstimulated rapidly because the resultant excitatory postsynaptic potentials (EPSPs)combine in a process called temporal summation.B.True. When nerve terminals a, c d are stimulated simultaneously, thepostsynaptic potentials recorded in neuron X are of the same value as thoserecorded when only nerve terminal c or is stimulated. When nerve terminals c andd are stimulated simultaneously, the resultant EPSPs combine in a process calledspatial summation to cause higher postsynaptic potentials.C.False. Nerve terminal a releases excitatory neurotransmitter which generatesaction potentials in neuron Y. This in turn causes nerve terminal b to releaseinhibitory neurotransmitter.D.True. Normally intemeurons in the spinal cord called Renshaw cells releaseneurotransmitter glycine at inhibitory synapses in somatic motor neurons. Thisinhibitory input to their motor neurons prevents excessive contraction of skeletalmuscles. If strychnine blocks glycine receptors, the motor neurons generate nerve impulses without restraint causing the skeletal muscles including diaphragm tocontract fully and remain contracted.ReferenceReece. J.B.. Campbell biology 10th edition, 2013. pp.1073.Sadava. D. The Life 9th edition, 2011, pp. 958-959.