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 entire nervous system of Rattus norvegicus may be divided into three groups: (A) Central nervous system, (B) Peripheral nervous system and (C) Autonomic nervous system. (A) Central Nervous System: It includes the: (1) Brain, and (2) Spinal cord (1) Brain: In spite of general similarity in the pattern of brain with other vertebrates, there is considerable amount of specialisation [...]