question_answer 21)

  Which one of the following statement is incorrect? (a) Heart muscles are striated and involuntary (b) The muscles of hands and legs are striated and voluntary (c) The muscles located in the inner walls of alimentary canal are striated and involuntary (d) Muscles located in the reproductive tracts are unstriated and involuntary

Answer:

                  (c) Smooth muscles are 'involuntary' and non-striated muscles as they cannot be controlled directly like that of skeletal muscles which are voluntary, controlled and possess striations. They, inner walls of alimentary canal are  non-striated and involuntary muscles. Rest other statements are correct.