4. Give reasons.
(1) Food becomes acidic in the stomach.
(2) Cardiac muscles are said to be
involuntary muscles.
Answers
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2
Explanation:
1. food becomes acidic in stomach beacuse of hydrochloric acid present in it to create acidic medium for pepsin to act on the food.
2. cardiac muscles are involuntary because we cannot control them by our own will. They work automatically without our interference.
Answered by
2
Answer:
1 Answer: a. Food becomes acidic in stomach because of the presence of hydrochloric acid in the stomach. As the food reaches the stomach, it gets mixed with the hydrochloric acid present there.
2 Answer Cardiac muscles are said to be involuntary because they are not controlled by our will. These muscles are found in heart and are the only muscles which work throughout the life without getting tired or fatigue.
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