<P> It was previously called the deltoideus ( plural deltoidei ) and the name is still used by some anatomists . It is called so because it is in the shape of the Greek capital letter delta ( Δ ) . It is also known as the common shoulder muscle , particularly in other animals such as the domestic cat . Deltoid is also further shortened in slang as `` delt '' . </P>
where does the deltoid muscle get its name
because it is in the shape of the Greek capital letter delta