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1.Assertion (A): The biceps muscle is attached to the shoulder blade at one end and to the radius bone of forearm at the other end. Reason(R): When it contracts, it pulls both the bones bringing them close together causing bending of arm at the elbow. This is called flexing of arm and hence, biceps is called a extensor muscle. A. Both A and R are true and R is the correct explanation of A. B. Both A and R are true but R is not the correct explanation of A. C. A is true but R is false. D. A is false but R is true.
Sagot :
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