Neurons - ANSWER ✓Nerve cells
Dendrites - ANSWER ✓Parts of neurons that receive
messages and conduct impulses toward the cell body
Axon - ANSWER ✓Extension of a neuron through which
messages pass to other neurons or to muscles or glands
Myelin sheath - ANSWER ✓layer of fatty tissue encasing
the fibers of many neurons; speeds up neural impulses
Synapse - ANSWER ✓the junction between the axon tip
of the sending neuron and the dendrite or cell body of the
receiving neuron
Synaptic Gap - ANSWER ✓aka cleft; the tiny gap at the
junction of a synapse
Neurotransmitters - ANSWER ✓chemical messengers that
traverse the synaptic gaps between neurons
Acetylcholine (ACh) - ANSWER ✓NT that enables muscle
action, learning, and memory - undersupply, as ACh-
producing neurons deteriorate, marks Alzheimer's disease
Dopamine - ANSWER ✓NT that influences movement,
learning, attention, and emotion - excess linked to