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What Is The Function Of Pectoralis Major

What Is The Function Of Pectoralis Major

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Pectoralis Major Muscle

Pectoralis muscle, one of the muscles that connect the front walls of the chest with the bones of the upper arm and shoulder. There are two such muscles on each side of the sternum (breastbone) in the human body: pectoralis major and pectoralis minor.

The pectoralis major, the larger and more superficial, arises from the clavicle (clavicle), the sternum, the ribs and a tendinous extension of the external oblique abdominal muscle. The pectoralis major runs across the upper part of the chest and is attached to the back of the humerus (the bone of the upper arm). Its main actions are adduction, or depression, of the arm (as opposed to the action of the deltoid muscle) and rotation of the arm forward around the axis of the body. When the raised arms are fixed (as in mountain climbing), it helps the latissimus dorsi and teres major muscles to lift the trunk. The pectoralis minor lies mostly below the pectoralis major, which originates from the middle ribs and inserts into (attaches to) the scapula (shoulder blade). It helps draw the shoulder forward and down (as opposed to the trapezius muscle). For this section of the Fitness Unit, we will learn the major muscles: their location, function and specific exercises that help in their development. Below are the muscles we will learn: Front View: Back View: -Deltoids Trapezius -Biceps Brachii Latissimus Dorsi -Pectoralis Major Triceps Brachii -Rectus Abdominus Hamstrings -Quadriceps Group Gastrocnemius -Gluteus Maximus

3 deltoids. Definition: The Deltoid allows the shoulder to move in many different directions. Function: The Deltoid has three movements/functions. The Deltoid flexes (decreased angle of the knee), abducts (makes arm away from the center of the body) and extends (increased angle of the connection) the arm. Exercises: -Front Dumbbell raises. -Sitting lateral raises. -Alternative dumbbell press -Military press

4 Pectoralis Major Description: The Pectoralis Major is the “meaty” part of the chest that helps provide power when doing push ups etc. Function: The Pectoralis Major serves to adduct (close to the center of the body) and to bend the shoulder joint. Exercises: -Bench Press -Incline Press -Dumbbell Pullover -Cable Crossover -Dumbbell Fly

What You Need To Know About Your Pectorals

5 Biceps Brachii Description: The Biceps Brachii is the most recognized muscle of the body. Function: The Biceps Brachii works with the Triceps to bend or extend the elbow. Exercises: -Dumbbell Curl -Barbell Curl -Concentration Curl -Preacher Curl

6 Rectus Abdominus Function: The Rectus Abdoninus allows you to bend and rotate your upper body. The muscles of Rectus Abdoninus are important for maintaining a good posture. Exercises: -Crunches -Elbow to knee -Total crunch -Reverse Curls

7 Quadriceps Function: The Quadriceps are also known as the “Quads”. Their role is to extend the knee. Location: The Quadriceps are located between the knee and the hip, in front of the leg. Exercises: -Squat – Leg Extensions – Lunge – Leg Press -Front Squat

What Is The Function Of Pectoralis Major

9 Trapezius Function: The Trapezius raises and lowers the shoulders and lengthens the neck. Location: The Trapezius or “Traps”, go from the base of the skull, the vertebral column to the scapula. Exercises: -Shoulder shoulders -Upright row -Military press -Dumbbell press

Pectoralis Major Muscle Injuries

10 Triceps Brachii Function: The role of “Triceps Brachii” is to extend the elbow. Location: The “Triceps Brachii” is on the back of the upper arm. It attaches to the scapula and down to the humerus. Exercises: – Tricep Press Down. -Lying or Standing Triceps Extension -Overhead Press

11 Latissimus Dorsi Location: The “Latissimus Dorsi” or “Lats” runs from your lower and middle vertebrae to your upper arm. Function: The “Latissimus Dorsi” adducts (brings closer to the center of the body) and lengthens the arms. Exercises: -Wide Grip Pull Down -Bent Over Row -Sitting Pully Row

12 Gluteus Maximus Function: The role of “Gluteus Maximus” or “Glutes” is to extend and externally rotate the hip, and extend the trunk. Exercises: -Squats -Lunges -Leg Press -Front Squats

13 Hamstrings Location: The “Hamstrings” or the “Hams” are found on the back of the leg, between the knee and the hip. Function: The “Hamstrings” flex and extend the knee, which are important when walking/running. Exercises: – Lunges – Leg Curls – Leg Extensions.

Pectoralis Major Rupture

14 Gastrocnemius Function: The “Gastrocnemius” are also known as the “Calfs” and is a small but extremely strong muscle. It’s primary role is to “plantar flex” or stand on the tip of your toes. Location: The “Gastrocnemius” is located in the back of the leg, between the knee and the ankle. Exercises: -Sitting toe raises. – Standing toe raised.

To operate this website, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy. Pectoralis Major is a very powerful muscle that forms the prominence of the chest. It moves the shoulder forward and across your chest. It is this muscle that you develop with the bench press exercise. The Pectoralis Major attaches to the upper arm bone (humerus bone) and has two parts. The upper part, which is known as the clavicular head, comes from the collar bone and the lower part, which is known as the sternal head, comes from the sternal bone.

It is a relatively rare injury. More than 50% of these injuries will classically happen in weightlifters during the bench press maneuver. Partial ruptures are less common. Complete fracture occurs when the tendinous attachment of the muscle to the upper arm bone tears.

What Is The Function Of Pectoralis Major

It happens because of a violent eccentric contraction of the muscle. Patients often describe a sudden pain or a burning sensation in the front of the shoulder and chest. It is then followed by bruises and the muscle bundles up.

Pectoralis Major Tendon Repair

Pectoralis Major muscle is not essential for normal everyday shoulder function, but it is important for strenuous activities. Patients who wish to return to active athletic and manual activities will benefit from surgical repair.

After the operation, you will regain 90% of your strength compared to about 60% in non-operative patients. The sooner the repair is carried out, the easier the operation and the better the results. The decision will depend on the type of tear, how old the tear is, how retracted it is, the needs and requirements of the patient and the expertise of the surgeon.

If there is a complete tear of the tendon, away from the bone and the patient is young, fit and healthy, then the recommended treatment is a surgical repair of the torn tendon.

In my practice I see tears within a few weeks of injury and usually it is a tendon avulsion that has occurred from your humerus. The recommended treatment is to surgically repair it as soon as possible directly to the bone with the help of endobuttons.

Pectoralis Minor Diagram Diagram

It involves an incision in the front of your shoulder. Tendon is then reattached to the humerus with three endo buttons.

After the operation, you will receive a sling for 4-6 weeks. The first part of the rehabilitation process will be to manage pain and swelling and begin range of motion exercises to the shoulder and arm. Light strength training will begin approximately 3 months after surgery. After 6 months you can do heavy strength training and contact sports. Total rehabilitation process can take between 9 months and 1 year after a surgical pectoralis major repair.

Pectoralis muscle strain should heal within a few days, however a moderate strain can take up to 6 weeks to heal. When citing evidence in academic writing, you should always try to cite the primary (original) source. This is usually the magazine article where the information was first stated. In most cases Physiopedia articles are a secondary source and thus should not be used as references. Physiopedia articles are best used to find the original sources of information (see the reference list at the bottom of the article).

What Is The Function Of Pectoralis Major

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Pectoralis Minor Muscle

Original Editor – Shaimaa Eldib Top Contributors – Ilona Malkauskaite, Shaimaa Eldib, Kim Jackson, Lucinda hampton, Kudzanayi Ronald Muzenda, Pierre Beunardeau, Joao Costa, Wendy Walker, Oyemi Sillo, George Prudden and WikiSysop

The pectoralis major is the uppermost and largest muscle of the anterior chest wall. It is a thick, fan-shaped muscle that lies beneath the breast tissue and forms the front wall of the armpit

. The pectoralis major is the most superficial muscle in the pectoral region. There are 2 heads of the pectoralis major, the clavicular and the sternocostal, which refer to their area of ​​origin.

The upper and lower fibers of

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