chapter 7 COPY Flashcards
neurotubes form into
brain and spinal cord
know mammalian brain
enter pic here
dermatomes
what the strip of skin that spinal root is linked to
hindbrain controls..
homeostasis. it controls our physiological needs
cerebellum means..
little brain
what species have the largest cerebellum
humans and birds
cerebellum controls.
accuracy, luidity of fine motor movement, and balance
taxion
disruption of motor function to do goal directed behavior
midbrains purpose helps with..
visual orientation (helps with peripheral vision)
pons
allows for better communication with cerebellum
reticulatar formation
a diffuse network of nerve pathways in the brainstem connecting the spinal cord, cerebrum, and cerebellum, and mediating the overall level of consciousness.
tectum
means roof. it”s in midbrain
what are the two “textum roofs”
superior colliculi
inferior colliculi
what is the super colliculi for
visual orienting
what is the inferior colliculi for
auditory
what is the purpose of the midbrain
to keep us safe
floor of midbrain
tegmentum (motor reflexes)
what is tegmentum used for
motor reflexes
what is the moto reflex used for (when babies fall)
to make you bigger so mom can grab you
test used for infant reflexes
apgar
thalmus looks like..
big lump on brain stem
what part of brain regulates pubetry
hypothalmus
hypothalamus releases..
hormones and oxytocin
what hormone is the mediator of prejudice
oxytocin
hypothalamus sends messages to..
pituitary
hypothalamus does what to hearing / seeing
enhances it
where vision is processed
lateral geniculate nucleus
limbic system allows for..
shortcuts for intuitive responses
what parts of the forebrain supports emotions, learning and movement?
limbic system and basal ganglia
what does basal ganglia mean
bottom and clump of cell bodies
gyrus/gyri means..
bump
sulcus/sulci means…
crack
longitudinal fissure
separates left and right parts of the brain
part of brain with internal map
parietal lobe
contact mediated attraction/contact mediated repulsion
how cells move toward/ move away from certain things
whats the first stage of wiring the brain
generation of neurons from the neural tube
steps of wiring the brain
neurogenesis
migration
differentiation
what trimester does neurogenesis occur
first trimester
what trimester does cell differentiation happen
second
what trimester does neuronal maturation happen
third
why is there so much neurogenesis happen in first trimester
an increase in human growth factor
stages of cell types/maturation
stem
progenitor
blast
specialized
two types of blast cells
neural and glial
arboration
when neurons are trying to connect to ll cells (arborize-uncontrolled growth)
what predisposes cells to migrate to certain cortical locations
subvascular zone
what distinctly differentiates the cortex’s cellular makeup?
organized into layers and grows off of subvacular zone
what acts like a scaffold for new neurons
glial
ventricles are what part of the brain?
the empty spaces
what happens during further differentiation
when cells reach their destination they go from precursor to neuron
they extend their axons to find appropriate target
what begins differentiation
neurites sprouting off cell body
when is the neurons fate determined
before migration
what does architecture depend on
intercellular signals
optic chiasm
where neurons cross left and right eyes
steps of making connections
pathway selection
target selection
address selection
axons and dendritic process appear_____
similar. they are both called neurites in cell differentiation
what is the growing tip called
growth cone
what did hubel and wiesel work on (and got nobel prize)
ocular dominance (whether neurons go to contralateral vs ipsilateral) it showed how cats only respond to certain angels/placements depending on what they were exposed to during the critical period
od
right eye
os
left eye
when do we become accustomed to new angles
critical period/critical wiring
motor visual recalibrations
adjusting speed of walking to make vision go at certain speed
synapse formation in cna steps
insert pic here
part of brain when you make analogies
temporal parietal junction
booba vs keke is based off of..
acceleration in TPJ
basis of synesthesia is located in..
temporal partiaa junction
steps of brain plasticy
arborization
pruning
(neurons that fire together wire together)
what parts of the brain myelinate last
frontal
parietal
Basic organization plan of CNS of call mammals
Telencephalon Diencephalon (thalamus) Midbrain Hindbrain Spinal cord
