KEY TAKEAWAYS •
The understanding of many diseases depends on knowing the basics of human genetics and how different traits are inherited.
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The nervous system is divided into the central nervous system and the peripheral nervous system.
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The autonomic nervous system involves the unconscious activities of the sympathetic and parasympathetic nervous system.
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Neurotransmitters are chemical messengers that act across the synaptic cleft between neurons and other neurons or muscle cells.
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Hormones act across long distances to have an effect on distant target organs.
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The endocrine system is important in many homeostatic mechanisms in the body.
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Biopsychology looks at the interplay between biology and psychological phenomena.
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