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02 Jul 2017
Teeth are the dermal derivatives of integument They are developed as a result of calcification in the mucous membrane of the 1 cavity. Along with the ridge of the two…
02 Jul 2017
The mammalian teeth are placed in the muscular sockets in the jaw bones. This type of dentition is called Thecodont. The teeth are ‘diphyodont’. Two sets of teeth develop during…
02 Jul 2017
Mostly the number of teeth is fixed in each mammalian species. Mammalian heterodont dentition is expressed by a ‘dental formula’. The number and arrangement of teeth in each half of…
02 Jul 2017
SKIN STRUCTURE AND FUNCTIONS IN MAMMALS The body of Rabbit is covered by skin. It shows two layers,   Epidermis Dermis   Associated with skin are hair, claw and glands.…
02 Jul 2017
In the mid ventral region of thorax of Rabbit sternum is present. It is made by five bony pieces called "Sternabrae". It is called "mesosternum". This will show "presternum" anteriorly.…
02 Jul 2017
The internal ear of rabbit includes "organ of corti" or Cochlea spirally coiled. Lagena is enclosed and fused with the spirally coiled j the preotic bone which form cochlea. Cochlea…
02 Jul 2017
THERIA   This group includes Mammals which show true mammals characters Infraclass Metatheria:   They show almost all the Mammalian characters.   Females show brood pouch or Marsupium on their…
02 Jul 2017
Mammalia is divided into two subclasses. 1) Prototheria 2) Theria   GENERAL CHARECTERS OF PROTHERIA   External pinnae are absent. In the young stage teeth are present and in the…
01 Jul 2017
Mammal like Reptiles therapsida might have given Mammals. It occured at the end of Triassic period of Mesozoic era. In Jurassic period only few mammals existed. In the coenozoic era…
01 Jul 2017
In the eye of the bird a comb like structure is present. It is called pecten. It is soft and vascular. It is a rectangular plate. It projects into the…
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