The interest in biology sharply increased during the era of the great geographical discoveries (XV century). The discovery of new lands, the establishment of trade relations between states expanded information about animals and plants. Botanists and zoologists have described many new, previously unknown species of organisms belonging to different kingdoms of wildlife. One of the outstanding people of this era – Leonardo da Vinci (1452-1519) – described many plants, studied the structure of the human body, the activity of the heart and visual function. After the church ban on opening the human body was lifted, human anatomy achieved brilliant success, which was reflected in the classic work of Andreas Vesalius (1514-1564), “The structure of the human body” (Fig. 1). The greatest scientific achievement – the discovery of blood circulation – made in the XVII century. English physician and biologist William Harvey (1578-1657).
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.