Ans the following questions :1.)what is the advantage of having four chambered heart ?
2. what will happen if Mucus is not secreted by the gastric glands ?
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Answered by
1
Answer:
like 2 of the heart chambers are used to pump the purified blood to all over the body and the other 2 are used to purify the impure blood by pumping it to lungs.
mucus is used to stop the entry of impurities into the system.
Answered by
2
Answer:
1) i) It prevents from mixing of oxygenated blood with deoxygenated one.
i) It helps in supplying of blood to all parts of body efficiently
2). If mucus is not released, it will lead to erosion of inner lining of stomach, which may cause acidity and ulcer. Ultimately, mucus provides a protection against acids and enzymes in the stomach.
Explanation:
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