Today, the microscope is such a basic tool in most laboratories such as the refrigerator at home....
We encourage you to learn about the movements of our planet, the Earth, with this simple video le...
![ORGANS of the circulatory system and their FUNCTIONS [with images]](/f/4e8868df816b5be4b60d7c674887f607.jpg?width=300&height=200)
The circulatory system The cardiovascular system is one of the most important systems of the huma...
The nervous system It is one of the most important and complex systems of the human body, as it a...
The spermatogenesis is the process of formation of male gametes or spermatozoa in man, from mitot...
The gametogenesis is the process by which germ cells of both sexes differentiate and mature into ...
The breathing is the process in which organisms obtain the oxygen necessary for cells to carry ca...
We always hear of male animals with male gametes and female with female gametes, but did you know...
When we talk about animals, we all get an idea of animals that move (with greater or lesser spe...
Animals have different ways of moving around they need to be able to get food, escape or discover...
Blood is a fundamental element for life de all living beings, since it constitutes the means by w...
To reach every area of the body, blood circulates through the interior of compliant ducts calle...