how big are small synaptic vesicles (SSV)?
50 nm diameter
how big are large dense core vesicles (LDCV)?
100 nm diameter
what classical neurotransmitters do SSV’s contain?
glutamate, GABA, glycine
what do LDCV’s contain?
catecholamines (adrenaline, noradrenaline), neuropeptides (neuropeptide Y), neurotrophins (BDNF)
SSV’s are electron lucent, meaning…?
they don’t have large proteins
LDCV’s are electron-dense (dark), meaning…?
they are packed full of large molecules/proteins
what do SSV’s and LDCV’s have in common?
both are membrane bound
where is majority of transmission in CNS derived from?
SSV’s
where is majority of transmission in PNS derived from?
LDCV’s