Ví dụ về cách dùng “ctenoid scale” trong một câu từ Cambridge Dictionary Labs

Elasmoid, Ctenoid and Cycloid Scales The most common form of fish scale is the elasmoid scale. It is the thin plate that you find on most fishes. It is often described as coming in two forms: ‘Ctenoid’, which have a set of fine teeth along the posterior edge and ‘Cycloid’, which are simply rounded on the outer/posterior edge.

They have backwardly directed spines arising from a rounded basal plate embedded in dermis. Spines is made of enamel like basal plate of dentine like bony material. Cycloid and Ctenoid types of scales can be found on the majority of our regular types of fish with bones that we eat. Sharks and sturgeons, in contrast, have placoid types. I was surprised to find out that the fish scales have healthy fats and certain minerals that are beneficial to our body. Ctenoid Scales: The ctenoid scales are also circular and can be distinguished from the cycloid scales by having a more or less serrated free edge. Moreover, several spines are present on the surface of the posterior area of the scale.

Spinoid scales, where the scale bears spines that are continuous with the scale itself. True ctenoid scales, where the spines on the scale are distinct structures. Transforming ctenoid scales are the ancestral scale type in the Apogonidae, making their spinoid and cycloid scales a secondary loss or reversal. Though sharing the transforming ctenoid scale type with the apogonids, the ontogeny of this scale type in several scorpionfishes (Scorpaenidae) does not have a spinoid phase.

Example sentences from the Web for ctenoid The cycloid and ctenoid scales of Teleosteans (see p. 105) are thin plates coated with epidermis. The Vertebrate Skeleton | Sidney H. Reynolds The exoskeleton is sometimes absent but generally consists of overlapping cycloid or ctenoid scales.

Ctenoid scales are composed of two main regions, a surface layer having a hard shell resulting from crystallized calcium salts, and a deeper layer that is built with collagen-type fibrils. Three generalized types of ctenoid scales have been categorized.

Cosmoid scales are similar to placoid scales and probably evolved from the fusion of placoid scales. They consist of two basal layers of bone, a layer of dentine-like …

Cycloid scales are characteristic of the more primitive teleosts with soft-rayed fins, including fishes such as trout and salmon (Salmonidae) (Figures 4 and 5), minnows (Cyprinidae) (Figure 7), and herring (Clupeidae), whereas ctenoid scales are found on many spiny-rayed fishes (Acanthopterygii) such as perch (Percidae), most mullets (Mugilidae), and scorpionfishes (Scorpaenidae). Cycloid scales are most often found on advanced fish species, such as trout, herring, and carp. However, fish are not necessarily covered in a single type of scales. Some species, such as flounders, have ctenoid scales on one side of the body and cycloid scales on the other. Scale type can also vary depending on … Cycloid scale synonyms, Cycloid scale pronunciation, Cycloid scale translation, English dictionary definition of Cycloid scale. a fish scale which is thin and shows concentric lines of growth, without serrations on the margin.

cyclo-ctenoid scale, scale English, Abbr.
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Similar to cycloid scales, they are overlapping which allows for greater flexibility in movement than … The finescale dace has what are called ctenoid scales, called this because of the cteni that run along the posterior area of the fish. Experiment-https://youtu.be/12SBHjmN7W0 Write up of the experiment-https://drive.google.com/file/d/1VDRpmbwcsETSUoRKYwQyHgRuKaX8j5WH/view?usp=drivesdk Higher Ctenoid Scale.

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Fig. 4.42. Four types of fish scales A) Placoid, B) Ganoid, C) Cycloid, and D) Ctenoid. Image from Living Ocean, CRDG, University of Hawaii at Manoa.

Three generalized types of ctenoid scales have been categorized. Ctenoid scales are composed of two main regions, a surface layer having a hard shell resulting from crystallized calcium salts, and a deeper layer that is built with collagen-type fibrils. Three generalized types of ctenoid scales have been categorized.

2018-01-01

Ctenoid scales have a variously developed spiny posterior margin (the word 'ctenoid' comes from the Greek cteno, meaning comb, and refers to the comb-like ctenii on the margin of the scale).

Placoid Scale of Shark: · 2. Cycloid and Ctenoid Scales of Fishes: · 3. Ampulla of Lorenzini (Dog Fish): · 4. Accessory Respiratory Organ of Magur Fish · 5.