Ch 8 Flashcards
Basal Nuclei
grey matter that are sub cortical
What is the corpus striatum
contains the basal nuclei in the front and lateral sides.
What do motor circuits do
stimulate appropriate movements/inhibit unwated, how hard you hit the table
Steps in a motor circuit
Motor cortices releases glutamate(excitatory)
Putamen releases GABA(inhibitory) (other fingers not thumb)
Globus Pallidus sends GABA inhibitory axons to the thalamus
Thalamus sends excitatory axons to motor cortices
what section does Planning and organization
of movements
Premotor Cortex
Sends out motor commands
Primary Motor cortex
What muscles does anterior corticospinal tract control
axial muscles
What muscles does lateral corticospinal tract control
appendicular muscles
What makes something an Upper Motor Neuron?
goes from primary motor cortex to spinal cord
WYat makes something alower motor neuron
spinal cord to effector
What part of the brain controls speech
broca’s area(motor speech area) and wernick’s area(language comprehension)
WHat connects wernicke’s and broca’s area?
arcuate fasciculus
Aphasia
loss of ability to
express or understand speech
Aphasia, yes. Fluent, no. Repeat back, no.
Wernicke’s aphasia
Fluent, no. Comprehends, yes. Repeats, no.
Broca’s aphasia
What type of sleep are u in during Delta
Deepest sleep.
Is REM close to awake or deep sleep?
Awake, it’s the top.
Sleep helps with
neural plasticity, form new memories, store memory, learning
Wakefulness is promoted by
Orexin(neuropeptide that promotes awakefulness) neurons (in the hypothalamus) and monoaminergic neurons (dopamine serotonin norepinephrine)
WHat leads to narcolepsy
imbalance of orexin
WHat brain region controls the onset of sleep?
Hypothalamus
WHat controls the memory region active during dreaming?
Hippocampus
What controls an emotion center active during dreaming
amygdala
What helps initiate the REM sleep
Pons
