BIOL 4220 Lecture Notes - Lecture 16: Gamma-Aminobutyric Acid, Scratch Reflex, Stretch Reflex

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10 Dec 2017
Neural Pathways
Physiological pathways
Sensory pathways
Motor pathways
Emotional pathways
Neurochemical (neurotransmitter) pathways
Ach (acetylcholine)
NE (norepinephrine)
5-HT (serotonin)
DA (dopamine)
Glu (glutamate)
GABA (gamma aminobutyric acid)
Gly (glycine)
Mental disorders
Caused by dysfunction of the neurotransmitter system
Correlated with neurotransmitter pathways
Treat mental disorder
Target neurotransmitter system
Neural connections (connections between neurons)
Made possible by neurotransmitters
Broken neurotransmitter system
Broken neural connections
Broken physiological circuitry
Broken psychological behavior
Spinal cord
Regulate reflexes
Coordinate fore- & hind-limb movements
Integrate sensory signals from fore- & hind limbs
Knee-jerk reflex (stretch reflex)
Maintain upright posture
Scratch reflex
Irritation of skin => scratch
Pain withdrawal reflex
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