Neurotransmitters are formed in a presynaptic neuron and stored in small membrane-bound sacks, called vesicles, inside this neuron. When this neuron is activated, these intracellular vesicles fuse with the cell membrane and release their contents into the synapse, a process called exocytosis.
Modern timekeeping defines a day as the sum of 24 hours â but that is not quite correct. The Earth's rotation slows down over time. So in terms of solar time, most days are a little longer than 24 hours.
How long is a day on other planets. When we think of a day on Earth we measure it in a period of 24 hours, actually it takes 23 hours and 56 minutes and 4 seconds to rotate on itâs axis. So, if we measure a day on each planet compared to Earth it kind of makes it easier.