2. what muscle tissue has a striated appearance, a multiple nucleus, is mostly under voluntary control, and a well-developed transverse tubule system?

skeletal muscles

Explanation:skeletal muscles are among the three types of muscles among which are the cardiac and smooth muscles.the skeletal muscles are responsible for the movement of Bones, generation of heat due to the contractions and also they protect vital body organs.its cells are multinucleated and arranged in bundles.they also contain proteins ,actin and myosin, which aids in contraction of the muscles

what's the

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.