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During digestion, chemical changes occur with the use of acids, releasing energy contained in food. The acids used in digestion are produced and regulated by -

Question 8 options:

neurotransmissions from the central nervous system

muscular contractions in the digestive tract.

organs in the digestive and endocrine systems.

oxygen received from the respiratory system.

1 answer

organs in the digestive and endocrine systems.
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