In this article we will discuss about the meaning and stages of oestrus cycle in female vertebrates. Meaning of Oestrus Cycle: During breeding season the vertebrate female undergoes hormonal changes influencing reproductive organs, inducing histological changes leading to development of eggs. The cycle is called Oestrus cycle. In this period the female permits sexual mating. This is called heat-period or [...]
Let us learn about the comparison of heart between lata, toad, lizard, pigeon and pig. Comparison # Lata: 1. Location: Heart is situated ventral to the oseophague in the pericardial section of the coelom. 2. Covering: The heart is covered by a transparent protective covering, called pericardium. It is a single layer in fish. Within pericardium there is a pericardial [...]
The upcoming discussion will update you about the difference between penis and hemipenis. Difference # Penis: 1. A single intromittent organ which is found in the males of turtles, crocodiles, in some birds and mammals, called penis. In marsupials the penis is forked for the paired lateral vagina. 2. The penis is situated mid-ventrally in front of anal or cloacal [...]