1 Volunteering with organizations is a way for communication officers to get experience in the field. 2  For example, many non-profits will have programs or events that they would like to be publicized. 3  Students can join a committee that focuses on publicity to gain experience. 4  Practice social media.
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.
A high carbon dioxide level causes a high degree of bronchodilation and increases the ease of air flow. Alveoli (round part of flask) that do not receive a good blood flow (i.e., perfusion) do not receive a good supply of carbon dioxide. Respiratory bronchioles connected to such alveoli are narrow. This adaptation of the air passages to the blood flow is called 'ventilation-perfusion coupling.'.