Examlex
Piaget's first period of cognitive development is usually called the:
Neurons
Specialized cells within the nervous system that transmit information to other nerve cells, muscle, or gland cells.
Neurotransmitters
Chemical messengers that transmit signals across a chemical synapse, from one neuron to another target neuron, muscle cell, or gland cell.
Myelin Sheaths
Fatty coverings on the axons of some neurons that help speed neural impulses.
Degeneration
The process by which tissue deteriorates over time, losing structure and function, often associated with diseases and aging.
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