Buccinator muscle refer in Roman antiquity to a crooked horn or trumpet, a shepherd's horn or a war-trumpet. Despite its similarity to the classical Latin name for cheek, i.e. bucca, the words "bucinator", "bucina", and "bucinere" (to blow the bucina) are not related to "bucca", hence some disapproved the spelling "buccinator". Although the name "bucinator" is not derived from "bucca", this muscle is also called "musculus buccae" or "musculus buccalis" in Latin and muscle of the cheek in English. The most recent official Latin anatomic nomenclature ("Terminologia Anatomica"), and preceding editions ("Nomina Anatomica") Buccinator muscle The buccinator ( ) is a thin
Psoas major muscle L3 nerves. In less than 50 percent of human subjects, the psoas major is accompanied by the psoas minor. In mice, it is mostly a fast-twitching, type II muscle, while in human it combines slow and fast-twitching fibers. This muscle is equivalent to the tenderloin. The psoas major joins the upper body and the lower body, the axial to the appendicular skeleton, the inside to the outside, and the back to the front. As part of the iliopsoas, psoas major contributes to flexion in the hip joint. On the lumbar spine, unilateral contraction bends the trunk laterally, while bilateral contraction