[A] : The synaptic knob contains mitochondria and synaptic vesicles rich in chemical trans- mitters
Channel: Doubtnut
Date: 2020-05-03

[A] : The synaptic knob contains mitochondria and synaptic vesicles rich in chemical trans- mitters.   [R]: Chemical transmitters are neurohor- mones. Their release is related to `Ca^(++)`  in- flux.