Pectoralis Muscle
Cancer Terms -> Anatomic Structure System or Substance -> Body Part -> Musculoskeletal System Part -> Muscle -> Pectoralis Muscle
Pectoralis Muscle Definition
Muscles of the upper chest. The term may refer to one of two muscles, the pectoralis major and pectoralis minor. The former is a thick muscle in the anterior portion of the chest. Its action involves flexion, medial rotation, and adduction of the humerus. The latter is a thin muscle located beneath the pectoralis major. Its action involves lowering the scapula and raising the ribs.Pectoralis Muscle Synonyms
Pectoralis MuscleTerms in Pectoralis Muscle category
Pectoralis MajorPectoralis Minor