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Physiological Bases of Behavior

Physiological Bases of Behavior - Physiological Bases of...

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Physiological Bases of Behavior - Mechanism – human beings and animals are essentially biological machines, and our behavior is programmed. - The physiological basis of behavior rests on the actions of the nervous system. - Central Nervous System o Brain o Spinal Chord - Peripheral Nervous System o Everywhere else in the body Cells of the Nervous System - Receptor Cells or Sensory Cells (Afferent) o Stimulated by events in our environment (Exteroceptors) or events that occur internally (Interoceptors) - Interconnector Cells o Provide pathways of communication and processing of information. - Response or Motor Cells (Efferent) o Connected to muscles, causing them to contract or relax and thus controlling action. The Reflex Arc - Reflexive reaction to some environmental event. - Occurs at the spinal cord level – brain not necessary. - Sensory neuron (example, on the skin) sends a message to the spinal column, which connects to an interconnector cell at a junction called a synapse. Interconnector cell connects to a motor cell at another synapse, and the motor neuron is tied to a muscle. Only 3 cells – sensory cell, interconnector cell, and motor cell.
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