Pectoralis minor - wikipedia Pectoralis minor Pectoralis minor Pectoralis minor ( shown in red ). Pectoralis minor muscle ( shown in red ). The bone shown in blue is the shoulder blade. Details Origin Third to fifth ribs, near the costochondral junction Insertion Medial border and superior surface of the coracoid process of the scapula Artery Pectoral branch of the thoracoacromial trunk Nerve Medial pectoral nerve ( C8 ) Lateral pectoral nerve Actions Stabilizes the scapula by drawing it inferiorly and anteriorly against the thoracic wall, raises ribs in inspiration Identifiers Latin Musculus pectoralis minor TA A04. 4.01. 006 FMA 13109 Anatomical terms of muscle ( edit on Wikidata ) The pectoralis minor ( / ˌpɛktəˈreɪlɪs ˈmaɪnər / ) is a thin, triangular muscle, situated at the upper part of the chest, beneath the pectoralis major in the human body. Contents 1 Structure 1.1 Relations 1.2 Variations 2 Function 3 Additional images 4 References 5 External links Structure It arises from the upper margins and outer surfaces of the third, fourth, and fifth ribs, near their cartilages and from the aponeuroses covering the intercostalis. The fibers pass superior and lateral and converge to form a flat tendon, which is inserted into the medial border and upper surface of the coracoid process of the scapula. Relations The pectoralis minor muscle is covered anteriorly ( superficially ) by the clavipectoral fascia. The Medial pectoral nerve pierces the pectoralis minor and the clavipectoral fascia. In attaching to the coracoid process, the pectoralis minor forms a ' bridge ' - structures passing into the upper limb from the thorax will pass directly underneath. Axillary nodes are classified according to their positions relative to the pectoralis minor muscle. Level 1 are lateral, Level 2 are deep, Level 3 are medial. The pectoralis minor divides the axillary artery into three parts ( in contrary sequence compared to the nodes ) - first part medial, second part deep / posterior, third part lateral in relation to the pectoralis minor. Variations An individual with an axillary arch as well as sternalis muscle and an accessory abdominal portion of the pectoralis major. The origin is from the second, third and fourth or fifth ribs. The tendon of insertion may extend over the coracoid process to the greater tubercle. It may be split into several parts. Absence of this muscle is rare but happens with certain uncommon diseases, such as the Poland syndrome. Function The pectoralis minor depresses the point of the shoulder, drawing the scapula superior, towards the thorax, and throwing its inferior angle posteriorly. Additional images Position of pectoralis minor muscle ( shown in red ). Right pectoralis minor muscle. Deep dissection. References This article incorporates text in the public domain from page 438 of the 20th edition of Gray 's Anatomy ( 1918 ) Jump up ^ http://www.teachmeanatomy.com/muscles-of-the-pectoral-region/ External links Wikimedia Commons has media related to Pectoralis minor muscles. Illustration : upper - body / pectoralis - minor from The Department of Radiology at the University of Washington Anatomy figure : 04 : 04 - 05 at Human Anatomy Online, SUNY Downstate Medical Center Anatomy figure : 05 : 02 - 08 at Human Anatomy Online, SUNY Downstate Medical Center Anatomy photo : 05 : ov - 0200 at the SUNY Downstate Medical Center Anatomy photo : 05 : 01 - 0102 at the SUNY Downstate Medical Center Slide Muscles / PectoralisMinor at exrx.net Muscles of the thorax and back Back splenius capitis cervicis erector spinae iliocostalis longissimus spinalis transversospinales semispinalis thoracis semispinalis cervicis semispinalis capitis multifidus rotatores interspinales intertransversarii Vertebral column trapezius latissimus dorsi rhomboid major minor levator scapulae Fascia thoracolumbar fascia Thorax Intercostal muscle external internal innermost subcostalis transversus thoracis levatores costarum serratus posterior inferior superior thoracic diaphragm Thoracic cavity pectoralis major pectoralis minor subclavius serratus anterior sternalis Fascia pectoral fascia clavipectoral fascia Anatomy portal Retrieved from `` https://en.wikipedia.org/w/index.php?title=Pectoralis_minor&oldid=861099993 '' Categories : Wikipedia articles incorporating text from the 20th edition of Gray 's Anatomy ( 1918 ) Muscles of the upper limb Hidden categories : All articles with dead external links Articles with dead external links from March 2018 Articles with permanently dead external links All articles with unsourced statements Articles with unsourced statements from November 2013 Talk Contents About Wikipedia Български Català Čeština Dansk Deutsch Español فارسی Français Galego 한국어 Hrvatski Bahasa Indonesia Italiano עברית Latina Magyar Nederlands 日本 語 Norsk nynorsk Polski Português Русский Slovenčina Slovenščina Srpskohrvatski / српскохрватски Svenska Tagalog 中文 20 more Edit links This page was last edited on 25 September 2018, at 02 : 48 ( UTC ). Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: the pectoralis minor is located deep to which muscle
Answer: beneath the pectoralis major