Definition
Biceps humeri is an older, less common term for what is now generally referred to as the biceps brachii. Like the biceps brachii, it's the muscle on the front of your upper arm responsible for bending your elbow and rotating your forearm. Think of it as the muscle that makes your arm look strong when you flex. While 'biceps brachii' is the more modern term, 'biceps humeri' conveys the same information about the muscle's location and function. Understanding both terms can be helpful when reading older anatomy texts. Its function, regardless of its name, remains to flex the elbow and supinate the forearm.