what is ventilation perfusion coupling
Ventilation perfusion coupling is the amount of gas reaching  alveoli & blood flow in pulmonary capillaries; local  autoregulation.10 people found this useful.Edit. coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. Couplings do not normally allow disconnection of shafts during â¦ operation, however there are torque limiting couplings which can slip or disconnect when some torque limit is exceeded.