The Human Brain and Muscular System

The Human Brain and Muscular System: Professor Diamond begins this lecture with her famous discussion of the human brain, demonstrating her favorite subject with a preserved sample. She then launches into a discussion of the muscular system, starting with its general functions: movement, support, heat generation, facial expression, and protection. She discusses nomenclature for muscles and how these are impacted by the number of muscle heads, the muscle length, muscle location, and attachments. Professor Diamond next talks about the functions of the muscle and their functional types: flexors, extensors, adductors, abductors, supinators, and pronators. She then explains how to differentiate muscle origin and insertion, and she applies this to several muscles in the head, describing the origin, insertion, and action for each.