The deltoid muscles are located in your shoulders. The anterior delt is in the front part of the shoulder, the middle delt runs down the side of the shoulder, the posterior deltoid muscles runs down the back part of the shoulder. The rotator cuff muscle runs just below the anterior delt from the armpit straight out.
The muscles in your chest are the pectoral muscles.
Your tricep muscles are located in your arms. They run down the sides of the arms from shoulder to elbow. The biceps, on the other hand are located on the inside of the arm. There are also very distinct muscles in the forearms.
Your abs are located in the stomach area – or abdominal region hence their name!
In the legs, you have the quadriceps muscles in the front – or quads. The muscles in the back of the legs are located in the calf, or lower leg, and hamstring which is the upper leg.