exam 4 Flashcards
Connective tissue that encircles a cluster of axons(nerve fascicle)
Perineurium
Functions of astrocytes (ALL)
-support
-BBB
-regulate glutamate cytotoxicity
Short distance signals between neurons
Graded potential
What are the two enteric ganglia
submucosal plexus
myenteric plexus
main extracellular cation
sodium (Na2+)
main extracellular anion
Chlorine (Cl-)
main intracellular cation
potassium (K+)
THREE OUT TWO IN
3 Na+ out and 2 K+ in
Nernst Equation significance
relationship of electrical and chemical forces acting on any ionic species across a semipermeable membrane
Neural tube in spinal cord development turns into what two structures
brain and spinal cord
Structures that make up developmental gray matter include…
Alar plate (dorsal, sensory)
Basal place (ventral, motor)
Neural crest cells develop from neural groove and develop into
Sensory neurons, adrenal medulla, sympathetic postganglionic neurons, etc
Which autonomic division is the lateral horn T1 to L4/5 (spinal cord)
Sympathetic
What are the two categories of Spina Bifida
Occulta, Aperta
Dura mater surrounds ________ sinuses
venus
Where in the lateral ventricles is CSF made
Choroid Plexus
What spinal cord segments make up the lumbar cistern sampling site
L5-7
Describe flow of CSF rostral to caudal
lateral ventricle –> interventricular foramen to 3rd ventricle –> mesenphalic aqueduct to fourth ventricle then central canal to spinal cord OR different paths to SAS
In the brain, what absorbs the most CSF in the SAS
Arachnoid villi
Where are small NTs made
in the presynaptic (axon) terminal
neuropeptide NTs are made in the
cell body (bc req peptide bond formation)
