Which muscle is located on the anterior surface of the scapula?
Subscapularis muscle attaches to smooth anterior surface of the scapula while serratus anterior muscle rises from its medial border. The prominent spine of the scapula divides dorsal surface into two regions: supraspinous fossa and infraspinous fossa.
What muscle causes anterior tipping of the scapula?
serratus anterior
Introduction. 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 muscles insert on the scapula?
The intrinsic muscles of the scapula include the rotator cuff muscles, teres major, subscapularis, teres minor, and infraspinatus. These muscles attach the scapular surface and assist with abduction and external and internal rotation of the glenohumeral joint.
Is serratus anterior muscle?
The serratus anterior acts to pull the scapula forward around the thorax. The muscle is named from Latin: serrare = to saw, referring to the shape, anterior = on the front side of the body….Serratus anterior muscle.
| Serratus anterior | |
|---|---|
| Artery | lateral thoracic artery, superior thoracic artery (upper part), thoracodorsal artery (lower part) |
Where is the serratus anterior muscle?
The serratus anterior muscle is a fan-shaped muscle at the lateral wall of the thorax. Its main part lies deep under the scapula and the pectoral muscles. It is easy to palpate between the pectoralis major and latissimus dorsi muscles.
What are anterior muscles?
The anterior muscles of the torso (trunk) are those on the front of the body, including the muscles of the chest, abdomen, and pelvis.
What is anterior infraspinatus?
The muscles of the rotator cuff provide opposing forces to balance the movement of the shoulder. The infraspinatus is involved in anterior-posterior force balance as the infraspinatus provides the posterior force, and the subscapular provides the anterior force.
What is a serratus anterior?
The serratus anterior is a fan-shaped muscle that originates on the superolateral surfaces of the first to eighth ribs or the first to ninth ribs at the lateral wall of the thorax and inserts along the superior angle, medial border, and inferior angle of the scapula.
Where does serratus anterior attach to scapula?
medial border
Origin and insertion The serratus anterior muscle originates at the 1st to 8/9th rib and inserts at the anterior surface of the medial border of the scapula (extending from the superior to inferior angles).
Is subscapularis anterior or posterior?
The subscapularis muscle forms the majority of the posterior wall of the axilla, facing the contents of axilla with its anterior surface.
Is supraspinatus anterior or posterior?
Supraspinatus is the most superior of the four rotator cuff muscles. It is a small triangular-shaped muscle, located on the posterior aspect of the scapula. It originates from the medial aspect of the supraspinous fossa, a concave depression located above the spine of the scapula.
What are the 5 anterior muscles?
The anterior muscles — the vastus medialis, vastus lateralis, vastus intermedius, tensor vastus intermedius, and rectus femoris — are commonly known as the quadriceps. You might notice there are five muscles present rather than four as the quadriceps name suggests.
What is the serratus anterior muscle?
Where is the supraspinatus muscle?
scapula
The supraspinatus muscle, the most superiorly located of the rotator cuff muscles, resides in the supraspinous fossa of the scapula, superior to the scapular spine.
What is the anterior supraspinatus?
The supraspinatus (plural supraspinati) is a relatively small muscle of the upper back that runs from the supraspinous fossa superior portion of the scapula (shoulder blade) to the greater tubercle of the humerus. It is one of the four rotator cuff muscles and also abducts the arm at the shoulder.