An insect circulatory system is best described as
A) totally closed like ours, with arteries and veins.
B) similar to ours, with general closed vessels but no distinct arteries and veins.
C) an open system that mostly washes hemolymph "blood" through the hemocoel.
D) totally absent; each body cell manages on its own to gain food and gets rid of wastes.
E) containing five pairs of "hearts."

Question

Quizplus · Accepted Answer

Insects have an open circulatory system where the blood, called hemolymph, is not contained in vessels but instead washes over the organs in the hemocoel.

An Insect Circulatory System Is Best Described as