Ch #2 Behavioral_Neuroscience

Ch #2 Behavioral_Neuroscience - Behavioral Neuroscience TWO...

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Unformatted text preview: Behavioral Neuroscience TWO MAJOR SYSTEMS (that affect behavior & mental processes) NERVOUS SYSTEM ENDOCRINE SYSTEM NERVOUS SYSTEM - Composed of brain, spinal cord, & a system of nerves ENDOCRINE SYSTEM - Composed of glands that secrete hormones NEURON Individual nerve cell 100 billion neurons (90% in brain) Q: Is a nerve the same thing as a neuron? COMPONENTS Axon - acts on the next neuron Dendrites - receive info Terminal buttons or knobs Vesicles- sacs in terminal knobs containing neurotransmitters Myelin sheath - increases efficiency Cell body/soma, nucleus COMPONENTS Synapse - gap b/n neurons Neurotransmitters - chemical messengers from neurons Receptor sites - lock and key mechanism NEURONAL TRANSMISSION NEURONAL TRANSMISSION NERVOUS SYSTEM CELLS SENSORY NEURONS-Carry info to brain & spinal cord MOTOR NEURONS-Carry info away from brain & spinal cord INTERNEURONS-Carry info b/n neurons GLIAL CELLS-Remaining cells in nervous system that create a glue or supportive system; aid in # of synaptic connections COMMON NEUROTRANSMITTERS ACH (acetylcholine) - Excitatory Dopamine (Inhibitory) Serotonin (Inhibitory) Norepinephrine (usu. Excitatory) Endorphins (Inhibitory) Neural Communication Neurotransmitter molecule...
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This note was uploaded on 03/01/2010 for the course PSY 220 taught by Professor Mr during the Spring '06 term at Greenville Technical College.

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Ch #2 Behavioral_Neuroscience - Behavioral Neuroscience TWO...

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