11)
In classical neuro transmission, The neurotransmitters released
at the end of presynaptic neuron reach and stimulate the
postsynaptic neuron through the axon terminals. The classical
neurotransmission is also known as axcoaxonic transmission. This
transmission occurs between axons of presynaptic and postsynaptic
neurons and results in anterograde communication. Option 2 is
correct.
12)
The glial cells wrap around an axon of a nerve cell forming a
covering called myelin sheath. The myelin sheath insulates the
neuron and myelin leaves gaps on axon and these gaps are called
nodes of ranvier. Option 2 is correct.
13)
The axon terminal carries the synaptic vesicles that contain
neurotransmitters. Thus, axon terminal is the structure associated
with neurotransmitter release. Option 2 is correct.