1. Neurotransmitter release: Nerve cells (neurons) use exocytosis to release neurotransmitters into the synapse, the tiny gap between neurons. This is how signals are passed from one neuron to the next, allowing for communication throughout the nervous system.

2. Hormone secretion: Endocrine cells use exocytosis to release hormones into the bloodstream. These hormones then travel to target cells throughout the body, triggering specific responses. For example, insulin is secreted from pancreatic beta cells via exocytosis to regulate blood sugar levels.