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    You are at:Home»Anatomy»Rhomboid Muscles: Powerful Scapular Retractors
    Bodybuilding anatomy: rhomboids

    Rhomboid Muscles: Powerful Scapular Retractors

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    By krunoslav on April 9, 2017 Anatomy
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    Rhomboid Major and Minor: Powerful Scapular Retractors

    This is another very essential lesson about the functional muscle anatomy. In this post you will find out everything you need to know about the functional anatomy of the rhomboid muscles – shape (appearance), function (muscle action), location, insertion, and origin. We will also disclose the best possible exercises to target your rhomboid minor and major. These are very important upper back muscles you simply must not neglect.

    Short Introduction Into Back Muscles

    When you’re putting together a back program, keep in mind that you’re hitting three distinct areas: the upper, middle, and lower back. You have to work all three areas to build strength, improve posture, and get the kind of shape you’re looking for.

    Your upper back area includes the trapezius, teres major, and the rhomboids. The middle back area comprises one main muscle: the latissimus dorsi, or “lats“. The lower back area constitutes only erector spinae – group of muscles that support the spinal column.

    Functional Anatomy of the Rhomboid Muscles

    The rhomboid muscles are paired upper back muscles that lie beneath the trapezius muscle. They are often divided into the thinner and weaker upper portion called the rhomboid minor and the thicker and stronger lower portion called the rhomboid major.

    Muscle Overview: Location, Shape, Function, Insertion, and Origin

    Rhomboid major and minor musclesI. Location

    The rhomboid muscles lie deep beneath the trapezius and descends diagonally from the thoracic vertebrae. In other words, they sit right between the shoulder blades. More precisely, the rhomboid minor is located on the upper back of the torso underneath the trapezius muscle and just above the rhomboid major. The rhomboid major lies just below the minor muscle and it’s further away from the trapezius. The rhomboids are completely hidden from the view because they are underneath the trapezius. Sadly, you will never be able to see them in the mirror.

    II. Muscle Shape (Appearance)

    Rhomboid muscles
    “Christmas tree muscles” in appearance

    As the word rhomboid suggests, the rhomboid major is rhombus (diamond) shaped. The major in its name indicates that it is the larger of the two rhomboids. The rhomboid minor is also diamond-shaped. The minor in its name indicates that it is the smaller of the two rhomboids. Sometimes there is a small interval of space between two rhomboids, but often there is not. These two muscles may even blend together.

    Sometimes we call them “Christmas three muscles“.  When you look at the rhomboids bilaterally with the spinal column between them, they look exactly like a Christmas tree in shape.

    III. Muscle Action (Main Function)

    The rhomboids bring (retract) the scapula in toward the spine, essentially squeezing the shoulder blades together. In other words, the lower-trap and rhomboid muscles tug your scapula downward, as in the vertical pull exercises (pull-ups and lat pull-downs).

    The rhomboid muscles (together with the levator scapulae) anchor the scapula to the spine. That’s the main reason why we call them scapular retractor muscles.

    IV. Origin and Insertion of the Rhomboids

    Origin and Insertion of the RhomboidsThe rhomboids (major and minor) originate on the spine and attach to the middle part of the scapula, or shoulder blades.

    The middle and lower trapezius and rhomboid muscles make up the thickness of the upper back because both attach from the upper vertebrae to the scapulae on either side; the rhomboids lie beneath the trapezius, and thus are less visible to the naked eye.

    Rhomboid major (greater rhomboid)

    • Origin: thoracic vertebrae (spinous processes of the first four vertebrae)
    • Insertion: scapula (medial border)

    Rhomboid minor (lesser rhomboid)

    • Origin: cervical vertebrae (spinous processes of 6th and 7th vertebrae)
    • Insertion: scapula (medial border)

    Indication of Weakness

    If your rhomboid muscle becomes shortened and stiff because of multiple trigger points, when you raise your arm the rhomboid does not allow the acromion process of your shoulder blade to move out of the way of the elevating humerus. This causes the tendons of the rotator cuff and bursa to become pinched or caught between the head of the humerus and the acromion process, caus­ing inflammation, pain, and eventually degenerative changes in your shoulder.

    Exercises for the Rhomboids

    Because the two rhomboids, major and minor, are right next to each other they are basically inseparable when in comes to training.

    Considering you are retracted during any rowing motion exercise or pull-down, the rhomboids generally work with the lats. The rhomboids do not insert on the humerus, so they do not perform movements like internal rotation. In most back exercises, separating the rhomboids and the lats is difficult. The lats are normally the agonist because they are large and strong, and the rhomboids are a synergist, much like the teres major.

    • Pull-ups
    • Wide-grip lat pulldowns
    • Bent over barbell row (45 to 90 degrees)
    • Seated cable row (wide or V-grip)
    • Inverted row

    Rhomboids in a Nutshell

    Beneath your trapezius lie your rhomboids, specifically the rhomboid major and rhomboid minor. These are small muscles that start at your spine and attach to your shoulder blades. They assist your traps with pulling your shoulder blades together. The rhomboids are two interesting muscles whose name means “rhombus in outline”. Finally, as you can see from the images above, the rhomboid muscles are paired muscles, one on each side of the spinal column.

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    krunoslav
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    Hey! My name is Petar, and I'm the owner and author of Bodybuilding Wizard. I started this website back in late 2014, and it has been my pet project ever since. My goal is to help you learn proper weight training and nutrition principles so that you can get strong and build the physique of your dreams!

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