Надо exercise 5.вставьте пропущенные слова: another important function of the kidney is to maintain the … balance of water, salt and acid in the body fluids. the brain is the … center for regulating and coordinating body activities. respiration is the … process of breathing. the blood and lymphatic systems have many … . joints are the places where … come together. the endocrine system is composed of … located in different regions of the body. exercise 6. вставьте артикль там, где необходимо. … main systems of … body have groups of organs working together to perform complex functions. … mouth, esophagus, stomach, small and large intestines are organs which compose … digestive system. there are some organs within … each system. … circulatory system is also called … cardiovascular system. the main function of … respiratory system is to convey … oxygen and to remove … carbon dioxide