key term - Bi

Definition

In the context of anatomy and physiology, particularly within the chapter on The Muscular System, "bi" is a prefix used in naming skeletal muscles that indicates the muscle has two origins or heads. This prefix is part of the standardized nomenclature that helps in identifying and describing the structure of muscles based on their anatomical characteristics.

Related terms

Biceps Brachii:

A muscle of the upper arm that has two heads (origins) and is involved in flexing the forearm.

Origin:

The attachment site of a muscle that remains relatively fixed during muscular contraction.

Insertion:

The attachment site of a muscle on the bone that moves when the muscle contracts