Reproductive system in an organism is for the purpose of sexual reproduction. It is a system of sex organs within its body which is also called as genital system. Not only the sex organs but also the various non-living substances within the body such as hormones, pheromones, body fluids, etc form an important accessory to the reproductive system that works together for the purpose of sexual reproduction. The sexes of differentiated species often have significant differences in their respective genital systems. These differences allow for combination of genetic material between the two individuals, which in turn favors possibilities of greater genetic fitness of the offspring. Humans have a high level of sexual differentiation among male and female reproductive systems. In addition to the differences in their sex organs numerous differences typically occur in their secondary sexual characters. The human reproductive system involves internal fertilization. The production of gametes for the purpose of fertilization takes place within the gonads through the process known as gametogenesis. Specifically, it is termed as spermatogenesis in males while oogenesis in females. Review articles are the summary of current state of understanding on a particular research topic. They analyze or discuss research previously published by scientist and academicians rather than reporting novel research results.
Review article comes in the form of systematic reviews and literature reviews and are a form of secondary literature. Systematic reviews determine an objective list of criteria, and find all previously published original research papers that meet the criteria. They then compare the results presented in these papers. Literature reviews, by contrast, provide a summary of what the authors believe are the best and most relevant prior publications.
The concept of "review article" is separate from the concept of peer-reviewed literature. It is possible for a review to be peer-reviewed, and it is possible for a review to be non-peer-reviewed.
Last date updated on June, 2014