Размещено 5 лет назад по предмету
Английский язык
от Hadiwka
Переведите пожалуйстаresearch work has given physiologists the possibility to find out that the heart muscle works or contracts about one third of the time of the person's life. the period of rest is shorter during greater physical exertion and longer when the body is at rest.prolonged research work of many physiologists has given the possibility to estimate the role of the ventricles which serve as the main pump. the atria act as receiving chambers. the contraction of the atria which sends the final portion of the blood into the ventricle is considerably less