Question

In crustacean circulatory systems, deoxygenated blood from the tissues enters the heart via

a. ostia.
b. the cardinal veins.
c. the dorsal abdominal artery.
d. the dorsal abdominal vein.

Answer 1

In crustacean circulatory systems, deoxygenated blood from the tissues enters the heart via ostia.

Step-by-step explanation:

In crustacean circulatory systems, deoxygenated blood from the tissues enters the heart via ostia.

Most crustaceans, including lobsters, have an open circulatory system.

In an open circulatory system, a fluid called hemolymph is pumped into a cavity called a hemocoel, and the heart pushes the hemolymph through the body. The hemolymph circulates around the organs within the body cavity and then reenters the heart through openings called ostia.