Pectoralis major muscle (Musculus pectoralis major) The pectoralis major is a paired, superficial muscle located on the anterior surface of the thoracic cage.If you're a gym lover, you'll hear these muscles also being referred to as the pecs muscles.The pectoralis major has a broad origin, based on which it is divided into three parts: clavicular part, sternocostal part and abdominal part The primary function of the pectoralis major is to flex, adduct, and medially rotate the arm. These actions all bring the humerus across the chest. All muscles within the pectoral girdle function to move the arm. Powered by Create your own unique website with customizable templates The pectoralis major, the larger and more superficial, originates at the clavicle (collarbone), the sternum, the ribs, and a tendinous extension of the external oblique abdominal muscle.The pectoralis major extends across the upper part of the chest and is attached to a ridge at the rear of the humerus (the bone of the upper arm). Its major actions are adduction, or depression, of the arm (in.
1. Pain Patterns & Symptoms of the Pectoralis Muscle 1.1 Pain patterns. Trigger points in this muscle - shown as Xs in the picture under Attachment points - can refer pain to the red areas displayed below.. The deeper the red, the more prone it is to experience pain in the respective area when trigger points in the pectoralis major are present The pectoralis major also known as the pecs is a large muscle that spans across your chest. In this article, we'll be breaking down the anatomy, functions, exercises, stretches pain and injuries of the pectoralis major Raffineret design og forbedret lyd. Find det nu The pectoralis major (from Latin pectus, meaning ' breast ') is a thick, fan-shaped muscle, situated at the chest of the human body.It makes up the bulk of the chest muscles and lies under the breast.Beneath the pectoralis major is the pectoralis minor, a thin, triangular muscle.The pectoralis major's primary functions are flexion, adduction, and internal rotation of the humerus Dissection studies show that the pectoralis major varies dramatically. There are commonly 2-5 laminates, sometimes 6 or 7, and sometimes the entire pectoralis is missing (Poland Syndrome). Also, the overlap of sections varies among studies. The variation illustrated here is common and I used it because, well, it was fun to illustrate and shows how differently Pectoralis Major.
The pectoralis major muscle is a large fan-shaped muscle of the pectoral region, overlying the anterior chest wall but often considered an upper limb muscle due to its function. Summary origin: medial clavicle, sternum, costal cartilages, and. . Medial rotation and flexion of the humerus - the clavicular head of the pectoralis is the portion of the muscle active during these movements Muscle Anatomy of the Pectoralis Major Origin: Anterior surface of the medial half of the clavicle Insertion: Lateral lip of the bicipital groove of the humerus and anterior lip of the deltoid tuberosity Actions: Flexion, adduction and internal rotation of the arm at shoulder Innervation: Medial pectoral nerve (C8, T1 - from medial cord) and lateral pectoral nerve (C5, C6, C7 - from. The function of this muscle is to bring the humerus across the chest, allowing to flex, adduct, and rotate the arm medially. Variant anatomy. some authors consider sternalis muscle a variant of pectoralis major muscle rather than of the rectus abdominis muscle 7. sternalis muscle may give some superior muscular slips which blend into pectoralis. Pectoralis major muscle: function of sternal portion and mechanism of rupture of normal muscle: case reports. J Bone Joint Surg Am. 1961;43(1):81-87. Created by
Muscle function. The pectoralis major is a powerful shoulder adductor that also functions to assist with internal rotation and forward flexion of the shoulder. In order to perform all of these functions adequately, it spans a large portion of the anterior chest wall and has several laminae (heads) (Table 1) Muskeln Pectoralis major består av tre olika muskeldelar. Den övre (Pars clavicularis), den mellersta (Pars sternalis) och den nedre delen (Pars abdominalis). De latinska namnen avslöjar ursprungen av de respektive delarna. Infästningen är desamma för alla tre, nämligen vid insidan av överarmsbenet (Crista tuberculi majoris humeri) Pectoralis major (PM) rupture is an uncommon sports injury that has become more prevalent in the past 20 years, with more than half of all reported cases occurring in the past decade. Both case reports showed optimal patient satisfaction regarding function and cosmesis Pectoralis Major: Origin, Insertion, Nerve Supply & Action The pectoralis major muscle is a thick, fan-shaped, situated anteriorly at the chest of the human body. It makes up the bulk of the chest muscles in the male and lies under the breast in case of the female The pectoralis major muscle is a part of the muscle group known as the pectoral girdle. The pectoral girdle is similar to the pelvic girdle of the hind limbs—which both are components that form the appendicular skeleton. However, the pectoral girdle is located superior to the pelvic girdle and supports the forelimbs
Purpose: Irreparable ruptures of the subscapularis tendon lead to impaired function of the shoulder and presents a surgically complex problem. Transfer of the pectoralis major tendon has been reported as a possible treatment option. The purpose of this systematic review is to critically examine the outcomes of pectoralis major transfers for the treatment of irreparable subscapularis tears Pectoralis major myocutaneous pedicle flap is harvested in the standard fashion with the following considerations:. An adequate length of the flap must be ensured to allow a skin paddle of adequate size to reach to the oral cavity defect without tension Pectoralis Major Muscle Strains are common especially when training the pecs. The Pec Major is the larger muscle anterior to the chest wall and is susceptible to strains and tears. There is a growing trend that several young men share, an obsession with the perfect chest and hence they spend a significant proportion of their time training on their pecs EXAMINATION PECTORALIS MAJOR Muscle Function: Origin Fixed: Adducts and medially rotates the humerus.The upper fibers (clavicular portion) are responsible for horizontal adduction towards the opposite shoulder while maintaining slight medial rotation of the humerus
pectoralis major tendon; rupture; surgery; The pectoralis major is an extremely powerful adductor, internal rotator, and flexor of the humerus. Its importance in contact sports stems from its action as a dynamic stabiliser of the shoulder. 1 It forms the anterior wall and fold of the axilla, extending across the front of the axilla to insert on to the proximal humerus The pectoralis minor is smaller and deeper than the pectoralis major. The muscle fibers of the pectoralis minor originate from the 3 rd , 4 th and 5 th ribs. These fibers travel obliquely (up and out) to coalesce into a tendon that attaches to a prominence of the shoulder blade named coracoid The pectoralis minor is triangular in shape and is located under the pectoralis major, and both form the anterior wall of the axilla. The shortened , tight muscle can be easily palpated there. It is also located close in relation to the brachial plexus and both the subclavian artery and vein, which all run between the muscle and the rib cage The pectoralis minor is a relatively small but important muscle located in the chest. Read this lesson to learn all kinds of interesting facts about this muscle, including its function, blood.
The pectoralis major index (PMI) was calculated as a ratio of pectoralis major distance values to establish normal values. The PMI was also calculated in a cohort of 19 male patients (mean age, 33.8 ± 6.8 years) with a pectoralis major rupture to assess the diagnostic utility of this novel quantifiable physical examination technique . Contact sport causes surface trauma to muscles and ligament, which results in inflammation of muscles.; The surface trauma causes micro tear of muscle tissue, which often follows inflammation
The function of the pectoralis major is to adduct and medially rotate the arm. Motor branches from C5 and C6 supply the clavicular head while fibers from C7, C8, and T1 supply the sternocostal head of the pectoralis muscle. Sensory innervation is from the same spinal nerves through C5, C6, C8, and T1 Pectoralis major muscle tears are relatively rare injuries that primarily occur while lifting weights, particularly when doing a bench press. Complete ruptures are most commonly avulsions at or near the humeral insertion. Ruptures at the musculotendinous junction and intramuscular tears usually are caused by a direct blow Abstract. Background: Techniques for augmentation mammaplasty commonly involve incisions through at least a portion of the pectoralis major muscle. The effects of implant position and surgical release of the muscle origin have not been thoroughly addressed. Objective: In this study the authors report on a group of female athletes, for whom pectoralis major muscle function is particularly.
Pectoralis definition, either of two muscles on each side of the upper and anterior part of the thorax, the action of the larger (pectoralis major ) assisting in drawing the shoulder forward and rotating the arm inward, and the action of the smaller (pectoralis minor ) assisting in drawing the shoulder downward and forward. See more 5 Funktion. Der Musculus pectoralis minor zieht das Schulterblatt in seine Faserrichtung schräg nach unten, genauer gesagt nach kaudal, medial und ventral. Bei fixierten (aufgestützen) Armen dient er zusammen mit dem Musculus pectoralis major als Atemhilfsmuskel
M. Pectoralis Minor / Lilla bröstmuskeln. Ursprung: revben (Costa) Fäste: skulderbladet (Scapula) Funktion: sänker skulderbladet Tips på träningsövningar: i övningar där du först sänker skuldran tränas lilla bröstmuskeln, till exempel i en chins eller i ett latsdrag Vanliga skador: eftersom det går blodkärl och nerver under denna muskel kan en spänd muskel leda till domningar i. The pectoralis minor (/ ˌ p ɛ k t ə ˈ r eɪ l ɪ s ˈ m aɪ n ər /) is a thin, triangular muscle, situated at the upper part of the chest, beneath the pectoralis major in the human body Furthermore, because the function of the pectoralis and subscapularis tendons is similar, biofeedback programs and retraining are minimized in the rehabilitation process. The purpose of this study was to systematically review the literature and consolidate the existing evidence on the outcomes of pectoralis major transfers for the treatment of irreparable subscapularis tears
Pectoralis Major (Clavicular Head) ExRx.net > Kinesiology > Muscles Directory > Muscle . Other Names. Chest (Upper) Upper Pecs ; Heads. Clavicular Head (1 of 2 ) Pectoralis Minor; Deltoid, Anterior; Main Menu | Muscle Lists | Exercises. Related Articles. The Benefits to Good Posture Pectoralis Minor eller lilla bröstmuskeln är en muskel mellan bröstkorgens 3-5:e revben och korpnäbbsutskottet på skulderbladet. Dess huvudfunktioner är: Inåtrotation och depression samt abduktion av skulderbladet. Den arbetar tillsammans med Serratus anterior och Pectoralis Major vid abduktion. Abduktion av skulderbladet kallas även protraktion