Biology, 16.07.2021 02:40 xxaurorabluexx

When the brain detects high levels of carbon dioxide and low levels of oxygen, the following will occur: A. the nerves innervating the heart will release acetylcholine to slow heart rate. B. the nerves innervating the heart will release acetylcholine to increase heart rate. C. the nerves innervating the heart will release norepinephrine to slow heart rate. D. the nerves innervating the heart will release norepinephrine to increase heart rate.

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