Introductory elements consist of clauses, phrases and words that appear before the main clause of the sentence. Essentially, they prepare your readers for what the sentence is really about, or the meat of the sentence.
The three different types are the skeletal, smooth, and cardiac  muscles. The cardiac muscles are ONLY found in the heart area, the  skeletal is the muscle that moves the bo â¦ nes and the smooth muscle  is in most of your main organs.ardiac, skeletal, and smooth muscles.   the three types of muscle in the body: cardiac (heart), skeletal (biceps, quadriceps etc.), and smooth muscle (found in the intest â¦ inal tract such as stomach and colon).
To learn more about muscles, check out the accompanying lesson called Three Muscle Types: Function & Location. This lesson covers the following objectives: 1  Identify the three kinds of muscles in the human body.  Differentiate between voluntary and involuntary muscles.