Answer:
1. Your fingertips are in constant, direct communication with your brain through your body's somatosensory system, a massive network of nerve endings and specialized touch receptors in the skin.
Explanation:
1. A neuron has three main parts. The cell body directs all activities of the neuron. Dendrites
extend out from the cell body and receive messages from other nerve cells. An axon is
a long single fiber that transmits messages from the cell body to the dendrites of other
neurons or to other body tissues, such as muscles. A protective covering called the myelin
sheath, covers most neurons. Myelin insulates the axon and helps nerve signals travel
faster and farther.
Messages travel along a single neuron as electrical impulses, but messages between
neurons travel differently. The transfer of information from neuron to neuron takes place
through the release of chemical substances into the space between the axon and the
dendrites. These chemicals are called neurotransmitters, and the process is called
neurotransmission. The space between the axon and the dendrites is called the synapse
When neurons communicate, the neurotransmitters from one neuron are released, cross the synapse, and attach themselves to special molecules in the next neuron called receptors. Receptors receive and process the message, then send it on to the next neuron. Eventually, the message reaches the brain.
