lecture day 1 course introduction and embryonic development

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16 Terms

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Anatomy
The study of body structures.
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Physiology
The study of the function of body structures.
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Homeostasis
The equilibrium or balanced state of the body.
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Feedback Control
Process that monitors and adjusts controlled conditions in the body.
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Afferent
The pathway carrying signals towards the central nervous system.
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Efferent
The pathway carrying signals away from the central nervous system to effectors.
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Negative Feedback System
A mechanism that reverses changes in controlled conditions.
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Positive Feedback System
A mechanism that reinforces or strengthens a change in controlled conditions.
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Extrinsic Regulation
Cell activities adjusted by nervous or endocrine systems through signals.
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Autoregulation
System where cells, tissues, or organs regulate their own environment.
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Levels of Organization
Hierarchy of structural levels in the body: atoms, organelles, cells, tissues, organs, organ systems, organism.
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Stimulus
A change that affects the controlled condition in the body.
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Receptor
A sensor that monitors a controlled condition.
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Control Center
Region that processes information from receptors and determines response.
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Effector
An organ or cell that produces a response to a controlled condition.
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Controlled Condition
A variable that is monitored in the body, such as temperature or blood pressure.