{"id":5687,"date":"2011-04-19T22:15:14","date_gmt":"2011-04-20T02:15:14","guid":{"rendered":"http:\/\/insidesurgery.com\/?p=5687"},"modified":"2013-05-27T01:04:17","modified_gmt":"2013-05-27T05:04:17","slug":"pectoralis-major","status":"publish","type":"post","link":"https:\/\/insidesurgery.com\/2011\/04\/pectoralis-major\/","title":{"rendered":"Pectoralis Major"},"content":{"rendered":"<p>The pectoralis major muscle is one of the major muscles of the upper anterior chest. Its main actions are to flex the humerus (as in doing bicep curls) and to adduct and medially rotate the humerus (i.e., to bring the arm into the side and rotate it counterclockwise.) <\/p>\n<p>The nerve supply is from the lateral and medial pectoral nerves. The proximal attachment is the clavicular head, the sternocostal head, the six most superior costal (rib) cartilages, and the aponeurosis of the external oblique muscle. The distal attachment is the intertubercular groove of the humerus.<\/p>\n<div id=\"attachment_5690\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/insidesurgery.com\/wp-content\/uploads\/2011\/04\/Pectoralis_major.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5690\" src=\"http:\/\/insidesurgery.com\/wp-content\/uploads\/2011\/04\/Pectoralis_major-300x300.png\" alt=\"Drawing courtesy Wikipedia\" title=\"Pectoralis_major\" width=\"300\" height=\"300\" class=\"size-medium wp-image-5690\" \/><\/a><p id=\"caption-attachment-5690\" class=\"wp-caption-text\">Drawing courtesy Wikipedia<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The pectoralis major muscle is one of the major muscles of the upper anterior chest. Its main actions are to flex the humerus (as in doing bicep curls) and to adduct and medially rotate the humerus (i.e., to bring the arm into the side and rotate it counterclockwise.) The nerve supply is from the lateral [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[63],"tags":[4333,4337,4336,4053,4338,4334,4335],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pectoralis Major - InsideSurgery Medical Information Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/insidesurgery.com\/2011\/04\/pectoralis-major\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pectoralis Major - InsideSurgery Medical Information Blog\" \/>\n<meta property=\"og:description\" content=\"The pectoralis major muscle is one of the major muscles of the upper anterior chest. Its main actions are to flex the humerus (as in doing bicep curls) and to adduct and medially rotate the humerus (i.e., to bring the arm into the side and rotate it counterclockwise.) 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