We started by viewing two giant neurons drawn on the black board.
Neurons communicate with other cells by releasing neurotransmitters at synapses.
Neurons receive communications from other cells by binding neurotransmitters to specific receptors, typically located in the plasma membrane. Information flow in a neuron is in through the dendrites, out through the axon. The end of the axon is called the axon terminal. The axon terminal contains neurotransmitter stored in little membrane-bounded cell organelles called vesicles . An increase in the level of calcium ions inside the axon terminal results in the fusion of the vesicles with the plasma membrane of the axon terminal.