Mod 7: neurons brain Flashcards
Neuroglia and scwann cells
support the cns astrocytes oligodendroglia microglia ependymal schwann
astrocytes
fill spaces btween neurons
part of BBB
rapid nutrient transport
role in scar formation and seizures
Oligodendroglia
form myelin sheath (white matter)
microglia
tissue macrophages specific to CNS
ependymal cells
line brain and choroid plexus, involved w CSF production
schwann cells
PNS myelin sheath formation/metabolic support
Acetylcholine neurotransmitter
excitatory, inhibitory to cardiac muscles
deactivated by acetlycholinesterase
Monoamines
histamines, serotonin, dompamine, epi/norepi
in brain-learning, emotions, motor control
Amino Acids
glutamate
gamma
glycine
glutamate-excitatory, (ALS drugs block)
Gamma aminobutyric Acid GABA- inhibitory @ post synapse (seizure drugs^gaba)
glycine-inhibitory
Frontal lobe
voluntary skeletal muscles contralaterally talking,writing, emotions, intellect, judgement Brocas area (speech)
Parietal lobe
tactile sensation (temp/pain, 2point discr.)
occipital
visual receptor, reading w comprehension
temporal
ear impulses (wernickes)
Basal ganglia stuctures (7)
amygdala, caudate, nucleus accumbens, subthalamic nucleus, substantia niagra, global pallidus, putamen
basal ganglia structures work with cerebellum to
inhibitory effects on
modify voluntary movements, role in cognition/emotion
thalamus
Limbic system (between cerebrum/diencephalon)
long term memory, primitive/visceral responses, motivation, feeding, bio rhythms, smell
meninges
pia mater contains___
subarachnoid space is above, houses__ carries__
arterial supply
houses arteries carries, CSF
meninges
arachnoid space
subdural space
middle, avascular
venous circulation
meninges
dura mater
outermost, contains venous system
meninges
epidural space
between dura mater and skull, some intracranial arteries
Diencephalon contains thalamus:_____ and hypothalamus: _____
thalamus-screens/directs impulses to/from cerebral cortex
hypothalamus- regulates water balance, apetite, vitals, sleep, links CNS+endocrine system
Brainstem
midbrain
relay center for eye/ear reflexes between cerebrum and brainstem/cord
Brainstem
pons
links cerebellum to cerebrum, midbrain to medulla
relfex actions, balance,posture
Brainstem
medulla
resp function, HR,BP, swallow, cough, vomit reflex
Brainstem
reticular formation
brainstem to cerebral cortex connective tissue maintains wakefulness (reticular activating system)
Cerebellum (behind brain stem)
coordination, smooth movement, equilibrium, muscle tone
CSF made by separation of fluid from blood in
___secretes csf
choroid plexus -capillary network from pia-> ventricles ependymal secretes Csf
