FINAL EXAM PREP !! Flashcards
(67 cards)
Cerebral Cortex
Outer layer of the brain responsible for higher functions. Encompasses the four lobes: occipital, temporal, parietal, and the frontal.
Limbic System
Responsible for processing emotions, motivations, and memories.
Brain Stem
Connects brain to the spinal cord, allowing for signals from the brain to affect the rest of the body.
Basil Ganglia
Motor control, learning, and decision making.
Thalamus
Relay station of sensory and motor information; processing it before it hits the cerebral cortex.
Hypothalamus
Regulates necessary functions in the body to maintain homeostasis. (including hormones)
Neurons
Specialized cells for electrical signaling activity in the brain. These are comprised of the axon, soma, and dendrites.
Dendrites
Part of a neuron; receives the signal.
Soma
Part of neuron; maintain health of the cell/neuron.
Axon
Part of a neuron; carries the signal away from the body of the cell.
Myelin
Part of a neuron; fatty insulation covering the neuron, acting to speed up the signal transmission.
Neurotransmitters
Signals released at the synapse that will bind with other receptors if it reaches the action potential. (Ex. Dopamine, serotonin, norepinephrine, GABA)
Action Potential
A brief electrical impulse that transmits information along the axon of a neuron. If it exceeds the action potential, then the neuron will fire and if not, then none will be sent. ALL OR NOTHING.
Synapse
The junction where two neurons meet, allowing for the communication of electrical and chemical information/signals between them.
Dopamine
Neurotransmitter and hormone; Pleasure, reward, motor skill
Serotonin
Neurotransmitter; Mood, sleep, appetite, emotions
Norepinephrine
Neurotransmitter; Control, alertness, arousal
GABA
Neurotransmitter; Inhibitory, calms, anxiety control
Central Nervous System
Primarily the brain and spinal cord.
Peripheral Nervous System
Nerves outside the central nervous system.
Somatic Nervous System
Responsible for voluntary skeletal-muscle movements.
Autonomic Nervous System
Responsible for involuntary skeletal-muscle movements.
Sympathetic Nervous System
Responsible for the natural “Fight or Flight” response.
Parasympathetic Nervous System
Responsible for maintaining balance and homeostasis.