Muscles That Move the Scapulae
| Action of the Scapula | What the Action Looks Like (Try It Yours ... | Primary Muscles |
| Elevation | Glide the shoulders upward toward the ea ... | Upper trapezius levator scapulae |
| Depression | Glide the shoulders downward | Lower trapezius |
| Retraction (adduction) | Pinch the shoulder blades toward each ot ... | Rhomboids middle trapezius |
| Protraction (abduction) | Round the shoulders forward | Serratus anterior |
What muscles that retract the scapula?
- Function: Upper fibers elevate the scapula and rotate it during abduction of the arm (90 to 180 degrees) Middle fibers retract the scapula Lower fibers pull the scapula inferiorly.
- Origin: Skull, nuchal ligament and the spinous processes of C7 to T12
- Insertion: clavicle, acromion and the scapular spine
- Innervation: Accessory nerve (Cranial nerve XI)
What muscle elevates scapula?
How do you strengthen your scapula muscles?
- ITYWs.
- Scapular pushups.
- Band pull-aparts.
- Wall ball circles.
- Advanced stability ball pushups.
What muscle depresses the scapula?
Muscles which Depress the scapula. Latissimus Dorsi. Pectoralis Major. Pectoralis Minor. Subclavius. Serratus Anterior. Trapezius (lower part) Anatomy Home Page. American.
Which muscles upwardly rotate the scapula?
The importance of upward rotation of the scapula in the snatch
- Subacromial impingent- compression of subacromial structures
- Neural structures overloaded
- External rotator cuff overload of supraspinatus, infraspinatus, teres minor
- Damage to subacromial bursa (subacromial bursa: a synovial cavity below your acromion)
What muscle is a prime mover in scapular retraction?
Retraction of the scapula is sometimes called adduction of the scapula. The scapula is moved posteriorly and medially along the chest wall. Muscles: rhomboideus major, minor, and trapezius are the prime movers.
What muscle elevates and retract scapula?
The trapezius is a large flat muscle that covers much of the upper back. Its fibers extend in several directions, and it elevates, retracts, and rotates the scapula freely.
What is retraction of scapula?
Scapular retraction describes the backward movement of the scapula about the thoracic wall (scapulothoracic joint). As the scapula moves towards the midline it can also be referred to as scapular adduction. The opposite motion is scapular protraction.
What muscle retracts and depresses scapula?
MusclesMuscleOriginActionTrapeziusOccipital Bone Ligamentum Nuchae & Spinous Process of Thoracic VertebraeElevates, Retracts & Depresses, Rotates the Scapula Upward & Extends the NeckSubclavius1st RibDepresses & Protracts the ShoulderSubscapularisSubscapular Fossa of the ScapulaMedial Rotation of the Shoulder5 more rows
Which muscle retracts rotates and fixes the scapula?
Rhomboid major indicated in red. Retracts the scapula and rotates it to depress the glenoid cavity. It also fixes the scapula to the thoracic wall.
Why does scapula bench retract?
The shoulders and elbows are primary joints used in the bench press, so by keeping the shoulder blades retracted, these joints are not stressed as much and are able to move the weight more effectively. So, by keeping the shoulder blades in, not only is it safer but also more effective.
Which muscle is responsible for scapular protraction quizlet?
Which muscles are responsible for scapular abduction/protraction? Serratus anterior (pictured) and pectoralis minor.
Where is the infraspinatus muscle?
shoulderYour infraspinatus muscle is a thick triangular muscle located at the back of your shoulder. It's attached to the top of your upper arm bone (humerus) and your shoulder blade (scapula).
Which muscles elevate the scapula quizlet?
MatchTrapezius - elevate, depress, adduct scapula.Latissimus dorsi m. - adduct scapula.Levator scapulae m. - elevate scapula.Rhomboid minor - elevate and adduct scapula.Rhomboid major - elevate and adduct scapula.Serratus anterior m. - ... Pectoralis minor m. -
What does the levator scapula muscle do?
The levator scapulae muscles are superficial extrinsic muscles of the back that primarily function to elevate the scapulae.
Which muscle will depress the scapula or elevate the ribs?
The serratus anterior (SA) is a fan-shaped muscle that originates on the superolateral surfaces of the first to eighth or ninth ribs at the lateral wall of the thorax and inserts along the superior angle, medial border, and inferior angle of the scapula.
What is the infraspinatus muscle?
The infraspinatus is a thick triangular muscle that occupies much of the infraspinous fossa of the scapula. It is a member of the rotator cuff, commonly remembered by the mnemonic “SITS” (supraspinatus, infraspinatus, teres minor, subscapularis).
How to learn anatomy of scapulae?
A helpful way to learn anatomy is to move and mimic the actions for the muscles you are learning that week. Look at the picture of the muscle, find it on your body, and picture how it is contracting as it produces its associated movement or movements.
Where is the shoulder blade?
The scapula, commonly referred to as the shoulder blade, is the bone that sits above the rib cage in the upper back.
Purpose
The scapular retraction test stabilizes the scapula in a retracted and grades the strength of the supraspinatus muscle. The neutral retracted scapular position improves the strength of the supraspinatus, allowing it to produce maximum force capacity compared to excessive protracted or retracted scapular positions.
Technique
First the traditional empty can test is performed. The patient’s shoulder is internally rotated, flexed at 90 degrees and held in the scaption position, the examiner applies a downwards directed force to the arm and the patient tries to resist it.
Evidence
In diagnosing full-thickness rotator cuff tears, the negative scapular retraction test has a sensitivity of 81.7% and a specificity of 80.8%. The positive and negative likelihood ratios respectively are, 4.25 and 0.23.
