The full name is biceps brachii which is Latin and means two-headed muscle. LOCATION OF THE BICEPS The location of the biceps is between the shoulder and elbow on the upper arm. FUNCTION OF THE BICEPS The function of the biceps is to enable us to raise the lower part of the arm which allows us to lift and carry. ABOUT THE BICEP The Bicep is the muscle everyone always tenses when they talk about the gym. It is the muscle most people associate with being strong. However, the bicep only makes up approximately 33% of actual arm size, the rest is the tricep.