Variation of vertebrates animal spleen
The article deals with the problem of vertebrates animal spleen variation (fish, amphibians, reptiles, birds, mammals). The paper examines healthy vertebrate animals spleen during physiological ripeness of 16 species: common pike Esox lucius (L.1758), perch Perca fluviatilis (L. 1758), tench Tinca tinca (L. 1758), green toad Bufo viridis (L. 1768), lake frog Pelophylax ridibundus (P. 1771), sharp-faced frog Rana arvalis (N., 1842), steppe viper or west steppe viper Vipera ursinii (B. 1835), marsh turtle Emys orbicularis (L. 1758), nimble lizard Lacerta agilis (L. 1758), guinea hen Numida meleagris (L. 1758), mallard or mallard duck Anas platyrhynchos (L. 1756), quail Coturnix coturnix (L. 1758), guinea pig Cavia porcellus (L. 1758), common beaver and riverbeaver Castor fiber (L. 1758), domestic rabbit Oryctolagus domesticus (L. 1758), northern bat Eptesicus nilssonii (K., 1839). Results of morphometric studies indicate following forms: elongated with different variations, rounded, oval, wrong triangular; literature data: elongated, like a suit butterfly hemispherical, trapezoidal, rectangular, in the form of "Ladybug", crescent and bean-like structure. The shape of the organ being studied is varied and often variable which is related to the peculiarities of the internal abdominal organs in embryogenesis. The shape of the spleen depends on the shape and structure of the animal's body (if the body is compact, it is rounded or oval; if the body is extended in the caudal cranial direction, it is triangular or elongated with different.