Pectoral muscle anatomy of the chest and upper arm (pectoral muscle: any of the muscles which connect the ventral walls of the chest with the bones of the upper arm and shoulder and of which there are two on each side of the human body.
ANATOMIA: Músculos de los hombros. Unidad Especializada en Ortopedia y Traumatologia www.unidadortopedia.com PBX: 6923370 Bogotá, Colombia.
From DaVinci& anatomical drawings. & studies, one on a larger scale, of a man& right arm and shoulder, showing muscles; three studies of a right arm; a diagram to illustrate pronation and supination of the hand.