When it comes to the anatomy of the upper body, it is important to understand the various muscles and their respective functions. The scapula is one such area of concern as it is an important structure for proper movement and positioning of the shoulder joint. One of the most vital questions regarding the scapula is what muscle elevates it. This article aims to provide detailed information about the muscle that lifts the scapula.
What is the Scapula?
The scapula, commonly known as the shoulder blade, is a flat, triangular bone situated in the upper back of the human body. It connects the collarbone to the arm bone (humerus) and provides attachment for several muscles that are responsible for shoulder movement.
What Muscle Lifts the Scapula?
The muscle that elevates the scapula is known as the Levator Scapulae. It is located in the posterior (back) neck region and stretches from the top four cervical vertebrae to the superior angle of the scapula. The primary function of the muscle is to lift the scapula and rotate it downwards while supporting the posture of the neck.
Anatomy of Levator Scapulae Muscle
The Levator Scapulae muscle is a thin, narrow muscle that originates from the posterior tubercles of the transverse processes of the first four cervical vertebrae. The initial fibers are thick and broad, but as they travel downwards, they narrow into a tendon that inserts into the superior angle of the scapula. The muscle is supplied by the dorsal scapular nerve, a branch of the cervical nerve roots.
Function of Levator Scapulae Muscle
The primary function of the Levator Scapulae muscle is to elevate the scapula. When the muscle contracts, it rotates the scapula downwards and raises it towards the ear. The muscle is also involved in supporting the neck posture by stabilizing the cervical spine. It acts as a postural muscle, especially during sitting and working on a computer for an extended period.
Related Muscles
There are several other muscles that are essential for the proper movement and positioning of the scapula. Some of these muscles include:
- Trapezius Muscle – It is a large muscle that extends from the cervical spine to the thoracic spine and inserts into the shoulder blade. It is responsible for moving the scapula and is also involved in head and neck movement.
- Rhomboid Minor and Major Muscles – These muscles are located in the upper back region and are responsible for pulling the scapula closer to the spine.
- Serratus Anterior Muscle – It is a muscle that runs from the ribs and inserts into the vertebral border of the scapula. Its main function is to protract and stabilize the scapula during various arm movements.
How to Strengthen Levator Scapulae Muscle?
Strengthening the Levator Scapulae muscle is essential for maintaining good posture and avoiding neck and upper back pain. The following exercises can help in strengthening this muscle:
- Shrugs – Stand straight and lift your shoulders towards your ears. Hold this position for a few seconds, then relax. Repeat 10 to 15 times.
- Upright Rows – Stand straight, holding a dumbbell in each hand. Lift the weights up towards your chin, keeping your elbows higher than your forearms. Repeat 10 to 15 times.
- Neck Side Flexion – Sit straight and gradually tilt your head towards your shoulder until you feel a stretch in your neck muscles. Hold this position for a few seconds, then relax. Repeat on the other side. Do 10 to 15 repetitions on each side.
Common Causes of Levator Scapulae Pain
The Levator Scapulae muscle can become painful and tender due to several reasons. Some common causes of Levator Scapulae pain include:
- Poor Posture
- Repetitive Strain
- Whiplash Injury
- Stress
- Excessive Computer Use
- Carrying Heavy Backpacks or Luggage
Conclusion
The Levator Scapulae muscle is an essential muscle for proper movement and positioning of the scapula. It elevates the scapula and stabilizes the neck posture. Strengthening this muscle through regular exercise can help maintain good posture and avoid pain and discomfort in the upper back and neck region.
FAQs
- Q. What is scapula?
A. Scapula, commonly known as the shoulder blade, is a flat, triangular bone situated in the upper back of the human body. It connects the collarbone to the arm bone (humerus) and provides attachment for several muscles that are responsible for shoulder movement. - Q. What is the role of the levator scapulae muscle?
A. The primary function of the Levator Scapulae muscle is to lift the scapula, rotate it downwards, and support neck posture. - Q. How can I strengthen my levator scapulae muscle?
A. The following exercises can help in strengthening the levator scapulae muscle:
– Shrugs
– Upright Rows
– Neck Side Flexion
References
1. Netter, F. H. (2019). Atlas of human anatomy. Elsevier Health Sciences.
2. Standring, S. (Ed.). (2008). Gray’s anatomy: the anatomical basis of clinical practice. Elsevier Health Sciences.
3. Hanna, E. B., & DiGiovanni Jr, B. F. (2016). Physical Examination of the Foot and Ankle: A Comprehensive Guide. Springer.