The cytoplasmic extensions that, together with the cell body, provide the main receptive surfaces for neurons are the
A) axons.
B) soma.
C) synapses.
D) dendrites.
E) neurofibrils.

Question

Quizplus · Accepted Answer

Dendrites are the cytoplasmic extensions of a neuron that receive incoming signals from other neurons or sensory cells. They provide the main receptive surfaces for neurons by increasing the surface area available for receiving signals. The soma or cell body contains the nucleus and other cellular organelles, but is not directly involved in receiving or transmitting signals. Axons are the long cytoplasmic extensions that transmit signals to other neurons or cells, while synapses are the junctions between neurons where signals are transmitted. Neurofibrils are structures within a neuron that provide structural support but are not directly involved in signal transmission or reception.

The Cytoplasmic Extensions That, Together with the Cell Body, Provide