What are hormones and what are the features of their action?

1) Hormones – biologically active substances synthesized in the body and acting only in living organisms.
2) The action of hormones is strictly specific – they act on certain cells and target organs.
3) The action of hormones is distant in nature – as a rule, they act on an organ or organ system remote from the gland

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.