Biological Bases of Behavior Mrs. Hensley AP Psych 2014.

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Presentation transcript:

Biological Bases of Behavior Mrs. Hensley AP Psych 2014

Why are psychologists concerned with human biology? Everything psychological is simultaneously biological” – We think, feel, and act with our bodies. 1800s: Franz Gall invented phrenology (a popular theory that claimed that bumps on the skull reveal our mental abilities and our character traits. -Although bumps on our skull reveal nothing about the brain’s underlying functions, Gall was accurate in supposing that various brain regions have particular functions. -We are composed of subsystems, tiny cells organize to form body organs, and these systems are even part of a larger system-THE INDIVIDUAL, who in turn is part of a family, culture, and community. -We are BIOPSYCHOSOCIAL systems!

Neural and Hormonal Systems Will Explain Why We FEEL…… Pain Strong Sick Nervous

It all Starts with the Neuron

Describe the parts of a neuron. Neuron: consists of a cell body and branching fibers Dendrite: receive information from sensory receptors (or other neurons) Axon: send information to other neurons Sensory Neurons: send information to body’s tissues and sensory organs inward to the brain and spinal cord (which processes information) Motor Neurons: carry outgoing information from the central nervous system to the body’s tissues. Interneurons: communicate internally and intervene b/n the sensory inputs and the motor outputs Myelin sheath: helps speed impulses

Neuron Structure Neurons do NOT touch each other- the space in between is call the synapse.

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