Biological Psychology Flashcards
Neuron
nerve cell specialized for communication
Dendrite
portion of neuron that receives signals
axon
portion of neuron that sends signals
synaptic vesicle
spherical sac containing neurotransmitters
neurotransmitter
neurotransmitter
chemical messenger specialized for communication from neuron to neuron
synapse
synapse
space between two connecting neurons through which messages are transmitted chemically
glial cell
glial cell
cell in nervous system that plays a role in the formation of myelin and the blood–brain barrier, responds to injury, removes debris, and enhances learning and memory
myelin sheath
myelin sheath
glial cells wrapped around axons that act as insulators of the neuron’s signal
resting potential
electrical charge difference (–60 millivolts) across the neuronal membrane, when the neuron is not being stimulated or inhibited
action potential
electrical impulse that travels down the axon triggering the release of neurotransmitters
absolute refractory period
time during which another action potential is impossible; limits maximal firing rate
receptor site
location that uniquely recognizes a neurotransmitter
reuptake
means of recycling neurotransmitters
neural plasticity
ability of the nervous system to change
The Endocrine System - adrenal gland
adrenal gland
tissue located on top of the kidneys that releases adrenaline and cortisol during states of emotional arousal
The Endocrine System - endocrine system
endocrine system
system of glands and hormones that
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The Endocrine System - pituitary gland
pituitary gland
master gland that, under the control of the hypothalamus, directs the other glands of the body
central nervous system (CNS)
central nervous system (CNS)
part of nervous system containing brain and spinal cord that controls the mind and behavior
peripheral nervous system (PNS)
peripheral nervous system (PNS)
nerves in the body that extend outside the central nervous system (CNS)
cerebral ventricles
cerebral ventricles
pockets in the brain that contain cerebrospinal fluid (CSF), which provide the brain with nutrients and cushion against injury
forebrain (or cerebrum)
forebrain (cerebrum)
forward part of the brain that allows advanced intellectual abilities
cerebral hemispheres
cerebral hemispheres
two halves of the cerebral cortex, each of which serve distinct yet highly integrated functions
corpus callosum
corpus callosum
large band of fibers connecting the two cerebral hemispheres
cerebral cortex
cerebral cortex
outermost part of forebrain, responsible for analyzing sensory processing and higher brain functions
frontal lobe
frontal lobe
forward part of cerebral cortex responsible for motor function, language, memory, and planning
motor cortex
motor cortex
part of frontal lobe responsible for body movement
prefrontal cortex
prefrontal cortex
part of frontal lobe responsible for thinking, planning, and language
Broca’s area
Broca’s area
language area in the prefrontal cortex that helps to control speech production
parietal lobe
parietal lobe
upper middle part of the cerebral cortex lying behind the frontal lobe that is specialized for touch and perception
temporal lobe
temporal lobe
lower part of cerebral cortex that plays roles in hearing, understanding language, and memory
Wernicke’s area
part of the temporal lobe involved in understanding speach
occipital lobe
occipital lobe
back part of cerebral cortex specialized for vision
primary sensory cortex
primary sensory cortex
regions of the cerebral cortex that initially process information from the senses
association cortex
association cortex
regions of the cerebral cortex that integrate simpler functions to perform more complex functions
basal ganglia
basal ganglia
structures in the forebrain that help to control movement
limbic system
emotional center of brain that also plays roles in smell, motivation, and memory
thalamus
thalamus
gateway from the sense organs to the primary sensory cortex
hypothalamus
hypothalamus
part of the brain responsible for maintaining a constant internal state
amygdala
amygdala
part of limbic system that plays key roles in fear, excitement, and arousal
hippocampus
hippocampus
part of the brain that plays a role in spatial memory
brain stem
brain stem
part of the brain between the spinal cord and cerebral cortex that contains the midbrain, pons, and medulla
mid brain
midbrain
part of the brain stem that contributes to movement, tracking of visual stimuli, and reflexes triggered by sound
reticular activating system (RAS)
reticular activating system (RAS)
brain area that plays a key role in arousal
hind brain
hindbrain
region below the midbrain that contains the cerebellum, pons, and medulla
cerebellum
cerebellum
brain structure responsible for our sense of balance
pons
pons
part of the brain stem that connects the cortex with the cerebellum
medulla
medulla
part of brain stem involved in basic functions, such as heartbeat and breathing
spinal cord
spinal cord
thick bundle of nerves that conveys signals between the brain and the body
interneuron
interneuron
neuron that sends messages to other neurons nearby
reflex
reflex
an automatic motor response to a sensory stimulus
somatic nervous system
somatic nervous system
part of the nervous system that conveys information between the CNS and the body, controlling and coordinating voluntary movement
autonomic nervous system
autonomic nervous system
part of the nervous system controlling the involuntary actions of our internal organs and glands, which (along with the limbic system) participates in emotion regulation
sympathetic nervous system
sympathetic nervous system
division of the autonomic nervous system engaged during a crisis or after actions requiring fight or flight
parasympathetic nervous system
parasympathetic nervous system
division of autonomic nervous system that controls rest and digestion
Nerve Cells & Neuronal Communication
nerve cell specialized for communication
Neuron
Nerve Cells & Neuronal Communication
portion of neuron that receives signals
Dendrite
Nerve Cells & Neuronal Communication
portion of neuron that sends signals
axon
Nerve Cells & Neuronal Communication
spherical sac containing neurotransmitters
synaptic vesicle
Nerve Cells & Neuronal Communication
neurotransmitter
chemical messenger specialized for communication from neuron to neuron
neurotransmitter
Nerve Cells & Neuronal Communication
synapse
space between two connecting neurons through which messages are transmitted chemically
synapse
Nerve Cells & Neuronal Communication
glial cell
cell in nervous system that plays a role in the formation of myelin and the blood–brain barrier, responds to injury, removes debris, and enhances learning and memory
glial cell
Nerve Cells & Neuronal Communication
myelin sheath
glial cells wrapped around axons that act as insulators of the neuron’s signal
myelin sheath
Nerve Cells & Neuronal Communication
electrical charge difference (–60 millivolts) across the neuronal membrane, when the neuron is not being stimulated or inhibited
resting potential
Nerve Cells & Neuronal Communication
electrical impulse that travels down the axon triggering the release of neurotransmitters
action potential
Nerve Cells & Neuronal Communication
time during which another action potential is impossible; limits maximal firing rate
absolute refractory period
Nerve Cells & Neuronal Communication
location that uniquely recognizes a neurotransmitter
receptor site
Nerve Cells & Neuronal Communication
means of recycling neurotransmitters
reuptake
Nerve Cells & Neuronal Communication
ability of the nervous system to change
neural plasticity