One of the Most Important Conclusions to Be Drawn with Regard

question 28

Multiple Choice

One of the most important conclusions to be drawn with regard to the relative roles of heredity and environment is that ____.

• A) these factors are too closely entwined to be separated
• B) heredity is generally the more important factor
• C) the environment is generally the more important factor
• D) both factorsmust be equally important

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Definitions:

All-or-None Law

A principle stating that certain physiological responses will occur to their fullest extent once a stimulus reaches a threshold, without gradation in response.

Action Potential

A sudden and temporary electrical charge that sweeps through a neuron, allowing it to transmit a signal along the nerve pathway.

Neuron Fires

The process by which a neuron sends an electrical signal down its axon, transmitting information to other neurons, muscles, or glands.

Synaptic Communication

The process by which neurons communicate with each other through the release and reception of chemical neurotransmitters across the synaptic gap.