Skeletal muscles are also known as striped or striated or voluntary muscles. These muscles are attached to the skeleton. These muscles are present in bundles. Each muscle fibre is an elongated cell having large number of myofibrils in its cytoplasm. Each myofibril has dark and light bands on it. The dark bands are A-bands or aniso-tropic bands and the light bands are I-bands or isotropic bands.
"Skeletal muscles" is the one <span>probable source of these muscles among the choices given in the question. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer that you were looking for and it has come top your help.</span>
<span>The male testes have tiny tubules containing diploid cells called spermatogonium that mature to become sperm. The basic function of spermatogenesis is to turn each one of the diploid spermatogonium into four haploid sperm cells.</span>
