The pectoralis major muscle can be divided into groups of
fibers superior, or claviclular, and inferior, or sternocostal.
<span>Pectoralis is a major muscle fundamentally responsible for
shoulder joint movements. It is divided
into four actions and two groups of fibers, anatomically the superior side and
interior side. These movements are often
used in everyday lives like throwing and flapping the arms.</span>
Hi there!
The cells split, and, after a certain amount of time, the two identical replicas of the split cells split again into more cells. With energy, this process repeats until there are billions of trillions of cells.
Hope this helps!
Correct answer - Substrate.
