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Females have them too, but the the pectoralis major is covered by breast tissue in women, so they're not usually visible. Insertion: All other trademarks and copyrights are the property of their respective owners. Sciences, Culinary Arts and Personal To learn more, visit our Earning Credit Page. - Facts, Dissection & Lab, Coronary Heart Disease: Definition & Prevention, Quiz & Worksheet - Characteristics of Radiata, Quiz & Worksheet - Characteristics of Protostomes, Quiz & Worksheet - Characteristics of Vertebrates, Quiz & Worksheet - Origins of Jaws in Vertebrate Fish and Sharks, Quiz & Worksheet - Evolutionary Characteristics of Amniotes, ACT Math - Absolute Value: Tutoring Solution, ACT Math - Inequalities: Tutoring Solution, ACT Math - Probability: Tutoring Solution, ACT Math - Data and Statistics: Tutoring Solution, ACT Math - Polynomials and Quadratics: Tutoring Solution, CPA Subtest IV - Regulation (REG): Study Guide & Practice, CPA Subtest III - Financial Accounting & Reporting (FAR): Study Guide & Practice, ANCC Family Nurse Practitioner: Study Guide & Practice, Transformations & Points on the Coordinate Plane, Top 50 K-12 School Districts for Teachers in Georgia, Finding Good Online Homeschool Programs for the 2020-2021 School Year, Coronavirus Safety Tips for Students Headed Back to School, Parent's Guide for Supporting Stressed Students During the Coronavirus Pandemic, Ramon Barba: Biography, Contributions & Inventions, Situational Crime Prevention: Definition & Strategies, Tetrahedral in Molecular Geometry: Definition, Structure & Examples, Idaho Real Estate: Ownership & Community Property, Idaho Real Estate Regulations: Financing & Foreclosure, Quiz & Worksheet - Julius Caesar & the First Triumvirate, Quiz & Worksheet - Paleolithic Period Weapons, Flashcards - Real Estate Marketing Basics, Flashcards - Promotional Marketing in Real Estate, Middle School Science Worksheets and Printables, Principles of Management: Certificate Program, Human Growth and Development: Tutoring Solution, McDougal Littell Geometry: Online Textbook Help, Quiz & Worksheet - Independent and Dependent Events in Probability, Quiz & Worksheet - Opportunity Cost Analysis, Quiz & Worksheet - Role of Leaders in Organizations, Types of Radioactive Decay and Their Effect on the Nucleus, What Is Glaucoma?

Decisions Revisited: Why Did You Choose a Public or Private College? Select a subject to preview related courses: There are two main muscles of the chest, the pectoralis major, and the pectoralis minor. {{courseNav.course.topics.length}} chapters | The pectoralis minor is the much smaller of the two, and it is located underneath the pectoralis major. When you think of the chest muscles, which are often referred to as the ''pecs,'' you are probably visualizing the pectoralis major muscle. This chart describes the various actions of the scapula and the ribs caused by the pectoralis minor. has thousands of articles about every Pectoralis Minor Location. Pectoralis Minor: Origin, Insertion, Nerve Supply & Action. An interactive demonstration of the Trapezius Muscle (Insertion, Origin, Actions & Innervations) featuring the iconic GBS illustrations. The main action of the pectoralis minor muscle is to move the scapula or shoulder blade. Coracoid process of the scapula [1] Functions (Actions) Draws scapula forward and downward (when the ribs are fixed) [1] Surround facial openings and act as sphincters and dilators of them 4. Log in or sign up to add this lesson to a Custom Course. All rights reserved. study What is the Serratus Anterior? How Do I Use's Assign Lesson Feature? Origin. Origin: (proximal attachments): Anterior surfaces of the sternal ends of ribs 3-5. How To Protect Your Eyes From Electronics Devices? Anterior surfaces (near the cartilages) of the ribs 3-5 [1] Insertion. Pectoralis Minor Action. The Pectoralis Minor is the smallest muscle of the two pectoral (chest) muscles. Try refreshing the page, or contact customer support. just create an account. credit by exam that is accepted by over 1,500 colleges and universities. Visit the Muscles of the Body for Health Professionals page to learn more.

Services. Diary of an OCW Music Student, Week 4: Circular Pitch Systems and the Triad, Financial Counselor: Job Description & Career Info, Jobs for Stay-at-home Moms with No Degree, Muscle Dysfunction in the Head, Neck & Shoulders, Pectoralis Minor: Origin, Action & Insertion, CSET Science Subtest II Earth and Space Sciences (219): Test Prep & Study Guide, AP Environmental Science: Tutoring Solution, CSET Science Subtest I - General Science (215): Practice & Study Guide, FTCE Earth & Space Science 6-12 (008): Test Practice & Study Guide, Praxis Family & Consumer Sciences (5122): Practice & Study Guide, What is an Owl Pellet? The pectoralis minor muscle receives its arterial supply from the thoracoacromial trunk’s pectoral branch. These actions include: Medical Disclaimer: The information on this site is for your information only and is not a substitute for professional medical advice. ORIGIN 3, 4, 5 ribs: INSERTION Medial and upper surface of coracoid process of scapula: ACTION Elevates ribs if scapula fixed, protracts scapula (assists serratus anterior) NERVE Medial pectoral nerve (C8, T1) (from medial cord) From these three locations, the muscle extends up the chest and inserts on the coracoid process of the scapula (shoulder blade).

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