Parasympathetic activity during micturition causes (1)Contraction of detrusor muscle and contraction of internal urethral sphincter (2)Contraction of detrusor muscle and relaxation of internal urethral sphincter (3)Relaxation of detrusor muscle and relaxation of internal urethral sphincter (4)Relaxation of detrusor muscle and contraction of internal urethral sphincter
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2)Contraction of detrusor muscle relaxtion of internal uretheral sphincter
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