Directed toward the blood or hemolymph; a directional term in anatomy used in organisms with open circulatory systems.
From Greek 'haima' (blood) + Latin '-ad' (toward). A technical anatomical direction term used in comparative anatomy and invertebrate biology.
Insects and crustaceans have open circulatory systems where blood (hemolymph) sloshes around their bodies, so anatomists need special directional terms like 'haemad' that wouldn't apply to humans!
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