Examlex
Comment on the following statement: "In the short run, a firm's total costs will be zero if the firm chooses to produce nothing."
Veins
Blood vessels that carry blood towards the heart from various parts of the body.
Hemocoel
A primary body cavity of most invertebrates, containing circulatory fluid instead of blood and distinguished by the lack of a true coelom.
Hemolymph
The fluid equivalent to blood found in most invertebrates, which occupies the interior cavity of the body and directly bathes the internal organs.
Open Circulatory System
A type of circulatory system in which the circulating fluid (hemolymph) is not entirely contained within blood vessels but bathes the internal organs directly in an open body cavity (hemocoel).
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