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Unit 3 (Neurons (original school of though: Franz Gall- phrenology,…
Unit 3
Neurons
original school of though: Franz Gall- phrenology, studied bumps on skull, thought they could determine your personality.
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neurotransmitters- chemical messengers cross the synaptic gap between neurons. when released, travel across synapse and bind to receptor sites of receiving neuron
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Scans
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CT scan- X-ray photographs taken at different angles and combined to show a composite slice of the brain
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fMRI scan- reveals blood flow and brain activity, determines function over structure
EEG scan- amplified recording of waves of electrical activity across the brain, measured by electrodes
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Endocrine system- body's slow chemical communication network; set of glands that release hormones into bloodstream
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Adrenal glands- pair of endocrine glands, sit just above the kidneys and secrete hormones that help arouse the body in times of stress
Pituitary gland- most influential gland. Under the influence of the hypothalamus, regulates growth and controls other endocrine glands
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Structures of the Brain
subcortical structures
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Reticular Formation- nerve network that travels through the brainstem and thalamus and plays an important role in controlling arousal
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Hypothalamus- controls maintenance functions such as eating; helps govern endocrine system; linked to emotion and reward
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