Endocrine glands

Endocrine glands-are deprived of the excretory ducts of the gland, which produce hormones (from buckwheat. hormao-encourage, set in motion) and secrete them into the blood or lymph. Blood carries hormones and delivers them to organs, tissues, cells. Hormones regulate metabolism, cell reproduction, the body’s response to constant changes in environmental conditions. The main function of […]

Blood is a very special juice

These words of The great writer, poet, scientist I. V. Goethe are consonant with the Bible: “Blood is the soul of man“. After all, human life is connected with blood and depends on blood. Blood circulates in blood vessels, it delivers all the necessary cells and tissues (including oxygen, nutrients, hormones, etc.) and, last but […]

Lymphoid system

Hematopoietic and immune system organs One of the basic conditions of human existence is the ability of the body to resist the introduction of infection or other foreign substances. This function is performed by the protective system. Immunity (from lat. immunitas – exemption from something) is a protection against any foreign substance, including its own […]