Examlex
The Easter Island moai figures are identical,with no unique individual features.
Acetylcholine
A neurotransmitter involved in many functions, including muscle contraction and the modulation of alertness, memory, and learning.
Neurotransmitters
Chemical substances that transmit signals across a synapse from one neuron to another in the nervous system.
Neurons
Specialized cells within the nervous system responsible for conveying information to other nerve cells, muscles, or glands.
Autonomic Nervous System
The part of the peripheral nervous system that controls the glands and the muscles of the internal organs (such as the heart). Its sympathetic division arouses; its parasympathetic division calms.
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