<Tr> <Th> FMA </Th> <Td> 9627 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terms of muscle (edit on Wikidata) </Td> </Tr> <P> The pectoralis major (/ ˌpɛktəˈreɪlɪs ˈmeɪdʒər /) (from Latin: pectus, breast) is a thick, fan - shaped muscle, situated at the chest (anterior) of the human body . It makes up the bulk of the chest muscles and lies under the breast . Below (deep to) the pectoralis major is the pectoralis minor, a thin, triangular muscle . In sports as well as bodybuilding, the pectoral muscles may colloquially be referred to as "pecs", "pectoral muscle" or "chest muscle" due to its being the larger and most superficial muscle in the chest area . </P> <P> It arises from the anterior surface of the sternal half of the clavicle; from breadth of the half of the anterior surface of the sternum, as low down as the attachment of the cartilage of the sixth or seventh rib; from the cartilages of all the true ribs, with the exception, frequently, of the first or seventh and from the aponeurosis of the abdominal external oblique muscle . </P>

What muscle in the upper body covers the upper chest