In an open circulatory system, blood is ________. not always confined to blood vessels and is under higher pressure than in clos
ed circulatory systems always inside of vessels and is under lower pressure than in closed circulatory systems not always confined to blood vessels and is under lower pressure than in closed circulatory systems always inside of vessels and is under higher pressure than in closed circulatory systems
not always confined to blood vessels and is under lower pressure than in closed circulatory systems
Explanation:
In an open circulatory system, blood is not always confined to blood vessels and is under lower pressure than in closed circulatory systems. This is because an open circulatory system is a system where blood, may be directly open to the environment in various places throughout the body such as the digestive tract, as opposed to being sealed in arteries and veins. Such a system is mostly found in insects and some animals such as snails or clams.
