Question

Most communication between neurons in the central nervous system is one-to-one, that is, one presynaptic neuron communicates to just one postsynaptic neuron _____.

a) True
b) False

Answer 1

The statement is false as neurons in the central nervous system typically form connections with multiple other neurons, not just one-to-one communication.

Step-by-step explanation:

The statement that 'Most communication between neurons in the central nervous system is one-to-one, that is, one presynaptic neuron communicates to just one postsynaptic neuron' is False. Neuronal communication in the central nervous system typically involves complex networks where a single neuron may form synaptic connections with multiple other neurons. For instance, a Purkinje cell in the cerebellum can have synaptic connections with as many as 200,000 neurons. This level of connectivity allows for the integration of signals and complex processing required for the nervous system to function properly.

The synaptic cleft is where the neurotransmitter molecules are released and diffuse across to bind to receptors on the postsynaptic neuron. This process can occur at synapses between an axon terminal and a dendrite, an axon and another axon, or a dendrite and another dendrite, illustrating further that neuronal communication is not restricted to a one-to-one pattern.

Answer 2

The statement regarding one-to-one communication between neurons in the CNS is false; neurons can form multiple synaptic connections and communicate with many neurons.

Step-by-step explanation:

The statement that most communication between neurons in the central nervous system is one-to-one, where one presynaptic neuron communicates to just one postsynaptic neuron, is false.

Neuronal communication is complex, and often involves one neuron connecting to and affecting many other neurons. Synaptic connections can form between axon terminals and many dendritic spines. The dendrites of a single neuron, such as a Purkinje cell in the cerebellum, can be contacted by as many as 200,000 other neurons.

Synapses are the specialized junctions through which neurons signal to each other and to non-neuronal cells, such as those in muscles or glands. This allows for complex signaling pathways in the central nervous system that contribute to the processing, integration, and response of intricate neural functions.