Muscle Contraction: In skeletal and cardiac muscle cells, calcium influx triggers the contraction process by interacting with troponin and tropomyosin. Neurotransmitter Release: In neurons, calcium influx at the presynaptic terminal prompts the release of neurotransmitters. Gene Expression: Calcium ions can act as secondary messengers in signaling pathways that regulate gene expression. Cell Proliferation: Calcium influx is involved in cell cycle regulation and proliferation.
