BY 30 – Fall 2001
13.1.
Overview to the Nervous System
a. brain; spinal cord; nervous; neurons; glial cells
b. central nervous system (CNS); peripheral nervous system (PNS); brain; spinal cord; neurons; neuronal processes
c. nuclei; tracts; ganglia; nerves
d. 12; cranial; 31; spinal
e. sensing; an integration; impulses
f. sensory; afferent; motor; efferent
g. general somatic afferent (GSA); touch; temperature; pain
h. general visceral afferent (GVA); distension; obstruction; ischemia; chemical composition; baroreceptors
i. motor; effectors
j. general somatic efferent (GSE); 1; general visceral efferent (GVE); 2; autonomic
13.2.
Histology of Nervous Tissue
a. neurons; glial cells; extracellular
b. cell body; soma; dendrites; axons; dendrites; axon
c. Nissl bodies; mitochondria; aerobic; glucose; cytoskeleton; neurofibrils
d. Dendrites; receptive; electrical signals
e. axon hillock; nerves; axon terminal bouton; Nissl bodies
f. axonal transport; kinesin; retrograde axonal; axon terminal; cell soma; polio; rabies; herpes; tetanus toxin
g. axon hillock; axon; action potentials
h. multipolar; bipolar; unipolar; pseudounipolar
i. astrocytes; microglia; ependymal cells; oligodendrocytes; astrocytes; blood; brain; microglia; ependymal cells
j. oligodendrocyte; many; insulate; increasing; nodes of Ranvier
k. Schwann cells; satellite cells; Schwann cells; only 1; satellite
13.3.
Resting Potentials
a. current; potential difference; repel; attract; ions
b. amps; potential difference; resistance; resistance; insulator; conductor; conductor; insulators
c. potential; -70 mV; negative
d. intracellular; extracellular; membrane permeability
e. 15 mM; 150 mM; 10 mM; 150 mM; 5 mM; 110 mM
f. ligand-gated; voltage-gated; leak channels; leak channels
g. equilibrium; Nernst; ~-90 mV; +60 mV
h. K+; Na+; polarized