All respiratory systems are open as the function of a respiratory system is to exchange gases with inside of the body and the external world. The term 'open' or 'closed' refers to the vascular system.
closed respiratory system
closed respiratory system
closed
open
A closed system would be full of freon without any leaks and a opened system would have no freon or has leaks...........
They have closed circulatory systems.
is the styllable hi opened or closed
The opposite of the adjective closed is open. The opposite of the verb closed is opened.
Humans have a closed circulatory system, in which blood is pumped by the heart through dedicated vessels, where it stays contained, as opposed to an open circulatory system (usually found in invertebrates) where blood is pumped out of the heart and vessels.
A burning candle is an example of an open system because it exchanges both energy (in the form of heat and light) and mass (as the candle wax burns) with its surroundings.
closed
Open loop (single cycle) involves a break requiring a restart, easily adapted to closed loop.