Ch. 2 Flashcards
The bodily responses that are the subject of psychophysiology study originate as electrochemical changes in…
neurons (nerve cells), muscles, and gland cells.
Bioelectric Potential
a difference in electrical potential as recorded from different parts of a living organism.
The nervous system controls the bodily functions measured by psychophysiologists including…
muscle action, organ function, and glandular activity.
How many nerve cells are in the human nervous system?
100 billion.
Central Nervous System
Brain, Spine. Feedback and Signals
Peripheral Nervous System
Everything other than the brain or spine.
Afferent Neurons
Neurons conduct impulses towards a particular structure. (often the point of reference is the CNS)
Efferent Neurons
Neurons conduct impulses away from a particular structure. (motor information away from the CNS)
Sensory System
Translate sensory signals such as light or pressure into neural signals and send information from sensory receptors to the CNS.
Motor System is divided into two systems
Somatic motor system and autonomic motor system.
Autonomic Nervous System
Efferent system for control of organs and glands.
Somatic Nervous System
Efferent system for neurons that project out of the CNS and innervate the skeletal musculature.
Synaptic
connects with another neuron
Non-synaptic
goes straight to signal.
Sympathetic
Fight or Flight (autonomic nervous system)
