In this article we will discuss about the circulatory system of rattus norvegicus. Two distinct circulatory fluids, namely blood and lymph, circulate through the circulatory system of the body. Blood flows through well-defined blood vessels and is pumped by an organ called heart. The lymph flows through lymph vessels and intercellular spaces. Several contractile lymph hearts force the flow of [...]
In this article we will discuss about the male and female reproductive organs of Rattus Norvegicus. (A) Male Reproductive Organs: The male reproductive organs (Fig. 1.156) are Testes, Epididymis, Deferent ducts, Spermatic cords, Urethra, Penis, Accessory genital glands, Perineal glandular modifications and Caudal glands. (i) Testis: In the young males the testes remain inside the abdomen. In adults, the testes [...]
The digestive system of Rattus norvegicus is constituted by the alimentary canal and the digestive glands (Fig. 1.143). (i) Alimentary Canal: It is a long tube starting from mouth to anus. But the tube is demarked into different regions. The function of each region is different. (a) Mouth: The alimentary canal begins from the mouth. It is a transverse aperture [...]