Week 3 Flashcards
Biological Psychology
neuron
a cell in the brain specialized for sending fast signals
glial cells
support cells
- insulate neurons with myelin: fast communicatino
- provide physical support
parts of a neuron
dendrites
enter only
axons
exit only
myelin sheath
insulate axon to help send signal more quickly
synapse
tiny gap between the ends of this cells axon and the dendrites of other neurons
action potentials
electrical impulses that allows signals to travel from the dendrites to the axon
synaptic vesicle
small packets of neutransmitters
snypase/synaptic cleft
space between one neuron and another
neuron communication…synapse
reuptake
any remaining neurotransmitters in the synapse are taken back into the axon terminal
neural plasticity
refers to the brains ability to change even into adulthood
4 process of neural plasticity
1) axon and dendrite growth
2) synaptogenesis
3) pruning (cell death)
4) myelination
Lon-term potentiation
more neurotransmitters, more receptors
central nervous system
brain spinal chord
peripheral
sensory and motor nerves
somatic
voluntary
autonomic
automatic
sympathetic
excited
parasympathetic
relaxed
sympathetic system
“fight or flight”
adrenaline released
increased heart rate, blood pressure
lungs relax
digestion inhibited
parasympathetic
rest and relax system
- slows heart rate
- promotes growth
- stimulates digestion
- promotes cell regeneration
inside the skull, the brain is cushioned by the_____?
meninges and cerebro-spinal fluid (CSF) in the centrical ventricles
Spinal cord
connect the brain to the body
cerebrum
is the most evolutionary recent part of the brain
cerebral cortex
the largest part of the cerebrum
- takes in sensory information and is responsible for higher brain fucntions
frontal lobe
complex thought, planning, control of movement, map of the body’s muscles
parietal lobe
touch, spatial awareness, map of the body’s skin surface
temporal lobe
hearing, object memory
insular lobe
taste awareness
occipital lobe
vision
frontal lobe sub areas
motor cortex, prefrontal cortex, broca’s area
motor cortex
planning, preparation of motor movements
intitiating motor movements
prefrontal cortex
responsible for thought, planning, decision making, and self control
broca’s area
language production
motor cortex diagram
somatosensory cortex
parts of the temporal lobe
auditory cortex, wernickes are, visual recognition
- hearing language, memory
auditory cortex
receives auditory info
wernickes area
language comprehension
visual recognition
faces and objects
occipital lobe contains the
visual cortex
visual cortex
receives and processes visual info
insular lobe
involved in sensing internal states, maintaining homeostasis, diverse roles
- lies beneath frontal and parietal lobe
corpus callosum
connects the hemispheres
limbic system is involved in?
processes information about internal states: emotion, motivation, and memory
limbic system components
thalamus, hypothalamus, amygdala, hippocampus
thalamus
sensory relay station
hypothalamus
internal states, The 4 F’sa
amygdala
excitement, fear
hippocampus
memory formation
basal ganglia
control of movement, damage linked to parkinsons
brainstem components
midbrain, pons, medulla
midbrain
reflexes, visual tracking
pons
‘bridge’ between cortex and cerebellum
medulla
breathing and heartbeat
cerebellum
“little brain”
balance and condition