sanociahnoel
17.11.2020 •
Biology
Which of the following industries is the largest producer of primary air pollutants in the United States?
Electricity production
Healthcare
Transportation
Agriculture
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Ответ:
The medulla oblongata is the primary respiratory control center. Its main function is to send signals to the muscles that control respiration to cause breathing to occur. There are two regions in the medulla that control respiration: The dorsal respiratory group stimulates inspiratory movements.
Explanation:
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.