Fish Gill (Cross Section)
Actinopterygii
This cross section of a teleost fish gill demonstrates the structural architecture essential for respiratory gas exchange in aquatic environments. The slide reveals the central bony or cartilaginous gill arch supporting double rows of primary gill filaments (primary lamellae). Extending laterally from each primary filament are delicate, highly vascularized secondary lamellae lined by a thin simple squamous epithelium. Hematoxylin and eosin (H&E) staining highlights the underlying cartilaginous ray support, capillary networks packed with nucleated erythrocytes, and mucous or ionoregulatory chloride cells located along the interlamellar regions.
- Category
- Vertebrates
- Magnification
- 20x
- Stain
- H&E
- Tags
- fish gill, gill filaments, primary lamellae, secondary lamellae, gill arch, Actinopterygii, teleost, respiratory system, gas exchange, erythrocytes, histology, cross section, H&E stain, vertebrate anatomy, microscopy
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