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The two purposes of this organ in the shark are to store energy and oil. The liver is a hydrostatic organ. This organ helps with buoyancy since the liver stores oils, decreasing the density of the shark's body. [11] The shark liver is also full of an oily-like substance called shark liver oil that helps the sharks be more buoyant and acts as an
The caudal fin is the tail fin (from the Latin cauda meaning tail), located at the end of the caudal peduncle. It is used for propulsion in most taxa (see also body-caudal fin locomotion). The tail fin is supported by the vertebrae of the axial skeleton and pterygiophores (radials). Depending on the relationship with the axial skeleton, four ...
The larval development and formation of the skeleton that support the median fins in adults result in pterygiophores. The skeletal elements of the pterygiophore includes basals and radials. The basals are located at the base of the dorsal fin, and are closest to the body. The radials extend outward from the body to support the rest of the fin. [7]
In sharks and some primitive bony fish the spiracle, a small extra gill opening, is found behind each eye. The skull in fishes is formed from a series of only loosely connected bones. Jawless fish and sharks only possess a cartilaginous endocranium, with the upper and lower jaws of cartilaginous fish being separate elements not attached to the ...
Pores are concentrated in the skin around the snout and mouth of sharks and rays, as well as the anterior nasal flap, barbel, circumnarial fold and lower labial furrow. [10] Canal size typically corresponds to the body size of the animal but the number of ampullae remains the same. The canals of the ampullae of Lorenzini can be pored or non-pored.
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Lateral line – sense organ that detects movement and vibration in the surrounding water; Shark cartilage – material that a sharks' skeleton is composed of; Shark teeth; Spiracle – pumps water across gills; Clasper – the anatomical structure that male sharks use for mating; Fish anatomy – generic description of fish anatomy
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