In fish gills, there are two types of lamellae, primary and secondary. The primary gill lamellae (also called gill filament) extends from the gill arch, and the secondary gill lamellae extends from the primary gill lamellae.

Each lamella comprises vertical rows of filaments upon the outer head of which are complex arrays of cilia that create a flow of water through the gill, form a filtration barrier, and transport retained particles to food grooves in the dorsal…

Gill lamellae are considered the definitive site of gas exchange, but some exchange also occurs across the filaments and arches. The gills are also functionally complex.

The gills are composed of comb-like filaments, the gill lamellae, which help increase their surface area for oxygen exchange. [5] When a fish breathes, it draws in a mouthful of water at regular intervals.

2024年3月26日 · Lamellae are thus the primary gas exchange structure within gills, accounting for ~ 90% of the gill’s diffusion capacity and more than 85% of a fish’s total diffusion capacity. This diffusion capacity is further enhanced by a counter-current arrangement for …

19 小时之前 · Scanning electron micrograph shows the primary gill filaments (FI) carried secondary lamellae (SL) in view (A), the magnification of the primary gill filaments in views (B, D, and E), and the magnification of the secondary lamellae in views (C and F). The elevated areas (e), depressed area (d), mucous (M), and pear-shaped (P) groups of spines (SP).

3 天之前 · The secondary gill lamella comprises pillar cells between the blood capillaries. The secondary gill lamella is enveloped by pavement cells. Full size image. Fig. 13. Displays a semithin section of the gill filament of the Ruby-Red-Fin Shark, scientifically known as Epalzeorhynchos frenatum. This species is classified under the Teleostei ...

In some of the bivalves of this group, including edible oysters, the gill lamellae are plaited into vertical folds and the reflected plates of the gills are completely united with the mantle and visceral mass. These were formerly designated as a separate order of Pseudolamellibranchia.

Therefore, we documented the normal histologic appearance of freshwater teleost (i.e., bony fish) gill tissue, specifically looking at the primary and secondary lamellae, after processing with a variety of special stains.

3 天之前 · The gill structure consisted of gill arches, gill rakers, gill filaments, and secondary lamellae with varied shapes of gill arches such as hook, semilunar, L-shapes, and crescentic shapes.