Branchial chamber explained

The branchial chamber in decapods and some other crustaceans is the area of the body containing the branchiae, or gills. In shrimp-like decapods, water enters the chamber from the edges of the carapace. In crab-like decapods, it enters from respiratory channels near the chelipeds.^{[1] [2]}

References

1. Web site: Crustacea Glossary::Definitions . 2024-06-16 . research.nhm.org.
2. Book: Stachowitsch, Michael . The invertebrates: an illustrated glossary . Proidl . Sylvie . 1992 . Wiley-Liss . 978-0-471-83294-2 . New York.