Muscles - Pectoral Region and AxillaThis is a featured page



Muscles of the Pectoral Region and Axilla

Pectoralis major
  • Origin - Medial half of clavicle; manubrium and body of sternum; upper six costal cartilages
  • Insertion - Lateral lip of intertubercular groove of humerus
  • Nerve - Lateral and medial pectoral
  • Action - Flexes, adducts, and medially rotates arm
Pectoralis minor
  • Origin - Third, fourth, and fifth ribs
  • Insertion - Coracoid process of scapula
  • Nerve - Medial (and lateral) pectoral
  • Action - Depresses scapula; elevates ribs
Subclavius
  • Origin - Junction of first rib and costal cartilage
  • Insertion - Inferior surface of clavicle
  • Nerve - Nerve to subclavius
  • Action - Depresses lateral part of clavicle
Serratus anterior
  • Origin - Upper eight ribs
  • Insertion - Medial border of scapula
Long thoracic
  • Action - Rotates scapula upward; abducts scapula with arm and elevates it above the horizontal



◄.....Go back to the Gross Anatomy homepage



AndyC
AndyC 		Latest page update: made by AndyC , Jul 7 2010, 7:39 AM EDT (about this update About This Update AndyC Edited by AndyC

140 words added

view changes
- complete history)
Keyword tags: axilla gross anatomy muscles pectoral region
More Info: links to this page

Threads for this page

There are no threads for this page.  Be the first to start a new thread.

Related Content

  (what's this?Related ContentThanks to keyword tags, links to related pages and threads are added to the bottom of your pages. Up to 15 links are shown, determined by matching tags and by how recently the content was updated; keeping the most current at the top. Share your feedback on Wetpaint Central.)
Upper Limb - Wrist/Hand Gastrointestinal (GI) Viscera Other peritoneal ligaments
Peritoneal Cavity Mesenteries Peritoneum and Peritoneal Cavity
Blood Vessels of the Anterior Abdominal Wall Lymphatic Drainage of the Anterior Abdominal Wall Nerves of the Anterior Abdominal Wall
Inner Surface of the Anterior Abdominal Wall