Outline 16 Brain Matter Flashcards
The brain is mostly ________ matter
gray
Gray mater is made of
-Neuron cell bodies
they are the basic building blocks that are designed to reach many cells in an interaction
Broca’s AREA & Wernicke’s AREA means that cells do what here?
an area of cells
Gray matter is ________ neurons and axons
Unmyelinated neurons & axons
What are neurons?
oBasic building block
oFunctioning, receive, transmit, synthesis information
“sending messages on” part of the brain
oNeurons consists of cell body (metabolism), dendrites, and a single axon
What are the parts of a neurons ?
oNucleus, cytoplasm, organelles
oHave many dendrites, but 1 axon
o A cell body (metabolism), dendrites, and a single axon
What does it mean that we have many dendrites, but 1 axon
This means we can take in a lot of information but only put out so much
What is synthesis?
Memory
- Relating one piece of information to another
- Absolutely the foundation of language and learning
NOTE: We don’t understand synthesis
The sensory and integrator aspect is so important for _____
neurons
Dendrites have many branches (dendritic spine) but only has one axon. What does that mean?
The sensory and integrator aspect is so important for
When does massive dendritic spine development occur?
at 2 years old and prunes at puberty
it gets ride of little used pathways and maintains the frequently used pathways
T/F you are born with the # of neurons you will always have
true unless you binge drink
the brain is a ____ ______
pattern seeker
Brain becomes accustomed to certain behaviors, and languages
What is pruning?
Combo of dendrites losing spines – pruning of the brain at puberty & occasionally neurons dying off
What are dendrites responsible for
incoming info
-just receiving
T/F Intellectual disability are accompanied by faulty dendritic spine
true
what are axons responsible for?
outgoing info
•Structure that interacts at the synapse
•Actively sending and transmitting messages to other neurons through the terminal bouton
what is white matter?
Mylinated
•Mylinated neurons move info faster and more direct from one place to another
What moves info faster myelinated or un?
Mylinated neurons move info faster and more direct from one place to another
What can synapse with what?
- Dendrites synapses with axons and other dendritic spines
* Axons synapse with dendrites; not another axon
The electrochemical message crosses and synapses where?
Axon through the terminal bouton is sending electrochemical message across the synapse
The end of the Axons contain multiple vesicles (storage sites) for ___________
neurotransmitters between the end of one axon dendrite of another
what are Neurotransmitters?
oChemical soup that govern everything we think and do
oNeurotransmitters: Dopamine, serotonin, ATP, Gaba
which cells are structural?
Glia cells
• Holding neurons together
o Think of them as scaffolding o Support and protection o Astrocytes o Dendrocytes o Microglia
when talking about White-matter Pathways a bundle of fibers travels to other parts of the brain. This electrochemical connections have various names. Name them…
Fascicles
o Individual fiber
o It is a axon
Fasciculus
o Bundle of fibers
Funiculus
o Bundle of fasciculus
Pathway to get information from one area of the brain to another area of the brain. Name 3 big white matter pathways
Column
Lemniscus
Peduncle
