What is the Difference Between Coelom and Haemocoel?
🆚 Go to Comparative Table 🆚The main difference between a coelom and a haemocoel lies in their origin, function, and the animals that possess them:
- Coelom:
- Originates from mesothelium and serves as the principal body cavity of annelids, echinoderms, and chordates.
- Lined by mesodermal epithelium and is filled with coelomic fluid.
- Examples include annelids to chordates.
- Haemocoel:
- Primarily found in arthropods and mollusks, serving as a reduced form of a coelom.
- Lined by the basal lamina of the epithelial sheet and filled with circulatory fluids, including blood.
- Blood circulates through the haemocoel, playing a role in the circulatory system.
- Examples include mollusks and arthropods.
In summary, a coelom is a fluid-filled main body cavity found in annelids, echinoderms, and chordates, while a haemocoel is a primary body cavity filled with circulatory fluids, typically found in arthropods and mollusks.
Comparative Table: Coelom vs Haemocoel
The main differences between coelom and haemocoel are as follows:
Feature | Coelom | Haemocoel |
---|---|---|
Origin | Develops from mesothelium during embryonic stage | Develops from blastocoel during early development |
Location | Primary body cavity in annelids, echinoderms, and chordates | Primary body cavity in arthropods and molluscs |
Function | Separates mesoderm into two parts and contains coelomic fluid | Filled with circulatory fluids, blood circulates through it |
Lining | Lined by coelomic epithelium | Lined by basal lamina of the endothelium |
Formation | Secondary body cavity | Blastocoel or primary cavity |
In summary, the coelom is a true perivisceral cavity that develops within the mesoderm during the embryonic stage and is lined by coelomic epithelium. It is the principal body cavity of echinoderms, chordates, and annelids. On the other hand, the haemocoel is a primary body cavity filled with circulatory fluids and is lined by the basal lamina of the endothelium. It is found in arthropods and molluscs.
- Coelom vs Pseudocoelom
- Coelomate vs Acoelomate
- Enterocoelom vs Schizocoelom
- Archenteron vs Blastocoel
- Schizocoelous vs Enterocoelous
- Coelenterates vs Platyhelminthes
- Blood vs Hemolymph
- Blastula vs Gastrula
- Hemichordata vs Chordata
- Porifera vs Coelenterata
- Lophotrochozoa vs Ecdysozoa
- Cnidarian vs Platyhelminthes
- Hematopoiesis vs Hemocytoblast
- Schistosoma Mansoni vs Haemotobium
- Anus vs Cloaca
- Protonema vs Prothallus
- Hematoma vs Hemangioma
- Phylum Annelida vs Echinodermata
- Nematodes vs Annelids