The insect hemocoel is divided by two diaphragms located dorsally and ventrally. Which pair is it?

The insect hemocoel is divided by two diaphragms located dorsally and ventrally. Which pair is it?

• A. Dorsal and ventral
• B. Anterior and posterior
• C. Lateral and medial
• D. Dorsal diaphragm and ventral diaphragm

Answer: (D)

Insects have a hemocoel, a spacious body cavity filled with hemolymph that isn’t a true coelom. Two diaphragm-like membranes run along opposite sides to partition this cavity: one on the dorsal side and one on the ventral side. These are called the dorsal diaphragm and the ventral diaphragm. That’s why the best answer names the actual diaphragms. The other options only indicate directions or pairings without naming the specific diaphragms that divide the hemocoel.

Insects have a hemocoel, a spacious body cavity filled with hemolymph that isn’t a true coelom. Two diaphragm-like membranes run along opposite sides to partition this cavity: one on the dorsal side and one on the ventral side. These are called the dorsal diaphragm and the ventral diaphragm. That’s why the best answer names the actual diaphragms. The other options only indicate directions or pairings without naming the specific diaphragms that divide the hemocoel.