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.
A day on Mars takes 24 hours 39 minutes and 35 seconds in Earth time. The length of a day is similar to a day on Earth, which is one reason why scientists believed that plants and animals could survive on the Red Planet. Jupiter is the largest planet, and it also has the shortest day.