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13-01-2021
Chemistry

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PLEASE HELP I CAN NOT FAIL THIS TEST I REALLY NEED HELP ASAP
Which of the body's systems directly tells the heart when to beat?
OA. the circulatory system
OB. the nervous system
OC. the respiratory system
OD. the digestive system

Respuesta :

13-01-2021

Answer:

OB. the nervous system

Explanation:

The Medulla Oblongata helps to regulate important functions such as heartbeat and breathing.

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