All of the most powerful hormones - adrenaline

Adrenaline - is one of the most powerful hormones.It is produced in the adrenal glands and is part of the body's system for responding to acute stress, which can be called the "fight or flight".This system causes the blood vessels to narrow, of...

The total degeneration : meaning of the term and a brief description of

term total degeneration proposed another Russian scientist Severtsov at the turn of the XIX and XX centuries, relate to general concepts of evolution and means the loss of certain structures of the body.But unlike dystrophy, it occurs as a resul...