Examlex
Find the sum of each infinite geometric series, if possible. 64 + 32 + 16 + . . .
Myelin Sheath
A fatty layer that surrounds the axon of some neurons, increasing the speed at which electrical impulses propagate along the nerve cell.
Acetylcholine
A neurotransmitter in both the central and peripheral nervous systems that plays an important role in muscle contraction and sensory perception.
Axons
Long, slender projections of neurons that conduct electrical impulses away from the neuron's cell body, facilitating communication within the nervous system.
Neurons
Specialized cells within the nervous system that transmit information through electrical and chemical signals.
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