★ Nervous & Endocrine Systems Quiz
An action that happens without conscious thought and is managed by the spinal cord is known as a
A. Stimuli
B. Reflex
C. Effector
D. Response
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A molecule that is made by the endocrine cells and has specific effects on receptor cells is
A. A neurotransmitter
B. A hormone
C. An impulse
D. A neuron
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