Multiple choice

In open vascular system, the circulating fluid is called _____.

  1. perilymph

  2. lymphatic fluid

  3. hemolymph

  4. blood
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In open circulatory systems (found in arthropods and mollusks), the circulating fluid is called hemolymph, which is analogous to blood in closed systems. Hemolymph directly bathes the tissues in body cavities called sinuses. Blood (D) is specific to closed circulatory systems. Perilymph relates to the inner ear, and lymphatic fluid is part of the lymphatic system.

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