The calcium that triggers muscle contraction is stored in synaptic vesicles called endoplastic reticulum. that is not the only function of the endoplastic reticulum it is also a network of a membranous tubules within the cytoplasm of a eucryotic cell continuous with the nuclear membrane.
NACL is the correct answer
<span>I would see x-rays, ultraviolet rays, and radio waves if my vision were “better.”</span>
ions are atoms of the same element with different numbers of electrons
