A test organism develops a genetic mutation that causes neurons to develop without synaptic knobs. How will this impact neuronal function?

A. The dendrites of the postsynaptic neurons will have no means to attach to presynaptic axons.
B. No neurotransmitters will be released into the synapse to signal the postsynaptic neuron, as the synaptic knob is where they are stored.
C. Signal transduction down the axon will be interrupted, so the signal will not "jump" the synapse and reach the postsynaptic neuron.
D. Action potentials will not travel down the axon nearly as rapidly.


Answer: B

Anatomy & Physiology

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