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Unit 3: Biological Bases of Behavior (Study the brain, Older structures,…
Unit 3: Biological Bases of Behavior
Neurotransmission
Neuron parts
Dendrites
Axon
Myelin Shealth
Nodes of Ranvier
Nucleus
Soma (Cell body)
Action potential
Threshold
All-or-none response
Axon Terminal
Synapse
Neurotransmitters
Reuptake
Refractory period
How they influence us?
2 types of neurotransmitters
Excitatory
Norepinephrine
Alertness & arousal
Undersupply: depress mood
Glutamate
Memo
Oversupply: overstimulate brain -> migraines or seizures
Inhibitory
GABA
Inhibit neurons' overfiring
Undersupply: seizures, tremors, & insomnia
Serotonin
Mood, hunger, sleep, & arousal
Undersupply: depression
Endorphin
Pain control & pleasure
Both
Dopamine
Attention
, movement, learning,
emo
Oversupply: schizophrenia;
Undersupply: tremors, Parkinson's
Acetycholine (ACh
Muscle control,
learning, & memo
Undersupply <-> Alzheimer's
Types of drug
Agonist
Stimulate responses
Increase the effect of neurotransmitters
Antagonist
Inhibit/block responses
Decrease the effect of neurotransmitters
Nervous & Endocrine System
Nervous System
Sensory (Afferent) Neurons
Motor (Efferent Neurons)
Central Nervous System
Reflexes
Peripheral Nervous System
Autonomic
Sympathetic
Parasympathetic
Somatic
Interneurons
Endocrine System
Hormones
Pituitary gland
Most influential gland -> control other glands
Influenced by hypothalamus
Parathyroids
Calcium level
Thyroid gland
metabolism
Adrenal glands
Fight-or-flight
Pancreas
Sugar level
Testis/Ovary
Study the brain
Older structures
Cerebral Cortex