What are the muscles of the shoulder?
Where are the shoulder muscles located?
What muscles attach to the clavicle?
What are the parts of the serratus anterior muscle?
Where is the pectoralis minor located?
Which muscle is the extrinsic muscle?
Where does the subclavius originate?
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Which muscle of the shoulder joint is located on the posterior surface of the scapula?
Teres major muscle – its origins are the posterior surface of the inferior angle and the lower part of the lateral border. Its role is to perform adduction and medial rotation at the shoulder joint. It is innervated by the subscapular nerve.
Which of the following muscles of the shoulder joint is located on the posterior surface of the scapula quizlet?
Which of the following muscles of the shoulder joint is located on the posterior surface of the scapula? The latissimus dorsi muscle inserts on the: medial lip of the intertubercular groove of the humerus.
What are the posterior shoulder muscles?
The posterior muscles include the trapezius, levator scapulae, rhomboideus, latissimus dorsi, triceps brachii, biceps brachii, serratus anterior, and deltoideus.
Which 3 rotator cuff muscles are on the posterior aspect of the scapula?
The rotator cuff includes the following muscles[1][2][3]:Subscapularis.Infraspinatus.Teres minor.Supraspinatus.
Where is your subscapularis?
The subscapularis muscle originates at the subscapular fossa and inserts into the lesser tubercle of the humerus. The muscle internally rotates and adducts the humerus. The bicep tendon lies underneath the subscapularis tendon in the bicipital groove.
Which of the following bony landmarks is located on the posterior surface of the scapula?
Posteriorly, the scapula is divided into a supraspinous fossa and infraspinous fossa by the scapular spine. Anteriorly, on the costal surface, is the shallow subscapular fossa. Laterally is the glenoid fossa.
How many muscles are attached to scapula?
17 different musclesIn total, 17 different muscles attach to the scapula, which makes it difficult to fracture.
Where is the trapezius muscle located?
backThe trapezius muscle is a large superficial back muscle that resembles a trapezoid. It extends from the external protuberance of the occipital bone to the lower thoracic vertebrae and laterally to the spine of the scapula.
Where is the rhomboid muscle?
upper backWhat Is the Rhomboid Muscle? The rhomboid muscles are a large group of muscles in your upper back. They're made up of the rhomboid major and the rhomboid minor. These and other muscles form the shoulder girdle that holds your shoulder blade and shoulder stable.
Where is the infraspinatus muscle located?
scapulaInfraspinatus muscle lies on the dorsal surface of the scapula, deep to trapezius, and parts of the deltoid and latissimus dorsi muscles. It originates with strong muscle fibers directly from the medial two-thirds of the infraspinous fossa, whereas its tendinous fibers arise from the ridges of the fossa.
What muscles are in the shoulder joint?
The primary muscle group that supports the shoulder joint is the rotator cuff muscles. The four rotator cuff muscles are the supraspinatus, infraspinatus, teres minor, and subscapularis.
What muscle is under scapula?
Latissimus dorsi (lats), the largest muscle in the upper part of your body. It starts below your shoulder blades and extends to your spine in the lower part of your back. Levator scapulae, a smaller muscle that starts at the side of your neck and extends to the scapula (shoulder blade).
Where are the trapezius and rhomboid muscles located?
upper backThe rhomboids are two bilateral, superficial muscles located in the upper back. They consist of two functionally similar muscles called rhomboid minor and rhomboid major. Together with trapezius, levator scapulae and latissimus dorsi, they comprise the superficial layer of the extrinsic back muscles.
Which of the following muscles inserts on the triangular space at the base of the scapular spine?
The trapezius muscle originates from the occipital bone and the seventh cervical and all thoracic vertebrae and inserts into the spine of the scapula, acromion, and clavicle. The muscle suspends the shoulder girdle and assists in raising and rotating the shoulder. The accessory nerve provides the innervation.
What muscle is the rotator cuff?
Share on Pinterest Four muscles make up the rotator cuff: the subscapularis, teres minor, supraspinatus, and infraspinatus. Together they assist in stabilizing the shoulder joint as well as in performing various arm movements.
Which of the following muscles is most commonly affected by scapular winging?
The most common etiology of a winged scapula is usually due to damage or impaired innervation to the serratus anterior muscle. The nerve that innervates this muscle is the long thoracic nerve.
Biceps: Anatomy, Function, and Treatment - Verywell Health
The biceps is a large muscle situated on the front of the upper arm between the shoulder and the elbow. Also known by the Latin name biceps brachii (meaning "two-headed muscle of the arm"), the muscle's primary function is to flex the elbow and rotate the forearm.The heads of the muscle arise from the scapula (shoulder blade) and combine in the middle arm to form a muscle mass.
What are the muscles of the shoulder?
Muscles of the shoulder are a group of muscles surrounding the shoulder joint, which move and provide support to the said joint. Posterior axio-appendicular muscles. Extrinsic muscles: Trapezius, latissimus dorsi, levator scapulae, rhomboid major, rhomboid minor.
Where are the shoulder muscles located?
Four of them are found on the anterior aspect of the shoulder, whereas the rest are located on the shoulder’s posterior aspect and in the back . Based on their location, the shoulder muscles are grouped into:
What muscles attach to the clavicle?
Anterior shoulder muscles, also called the pectoral muscles, attach the upper extremity to the clavicle and the thoracic cage. These muscles include the pectoralis major, pectoralis minor, subclavius and the serratus anterior muscle. All of them are supplied by the respective branches of the brachial plexus .
What are the parts of the serratus anterior muscle?
The serratus anterior muscle is divided into three parts which differ in origins and insertions; superior, middle and inferior.
Where is the pectoralis minor located?
The pectoralis minor lies underneath the pectoralis major muscle. It originates at the rib cartilages 3-5 and inserts to the medial border and the coracoid process of the scapula. The medial pectoral nerve supplies the muscle. The pectoralis minor draws the scapula anteroinferiorly and anchors it to the thoracic cage.
Which muscle is the extrinsic muscle?
Extrinsic muscles are further subdivided into superficial and deep layers. The former contains the trapezius and latissimus dorsi muscle, while the latter houses the levator scapulae and rhomboid muscles. The intrinsic muscles of the posterior group include the deltoid, teres major and the muscles of the rotator cuff.
Where does the subclavius originate?
The subclavius muscle originates at the cartilage and the sternal end of the 1st rib. It inserts at the anteroinferior surface of the middle part of the clavicle. The nerve to the subclavius supplies this muscle. Its functions are to depress and hold the clavicle in position.
Which muscle is responsible for upward rotation of the inferior angle of the scapula?
T/F The levator scapulae muscle is responsible for upward rotation of the inferior angle of the scapula.
Which nerve innervates the serratus anterior muscle?
T/F The nerve that innervates the serratus anterior muscle is the long thoracic nerve (C5-7)
What is the T/F muscle?
T/F The insertion of the serratus anterior muscle is the anterior aspect of the whole length of the medial border of the scapula.
What is the T/F joint?
T/F The scapulothoracic joint consists of the bony articulation of the anterior scapular moving directly against the posterolateral ribs.
Where does T/F dislocation occur?
T/F Posterior dislocations occurs frequently at the glenohumeral joint.
What can the pectoralis minor do?
T/F The pectoralis minor can perform adduction, downward rotation, or depression of the shoulder girdle when activated .
Which joint is adducted, extension, internal rotation, and horizontal abduction?
adduction, extension, internal rotation, and horizontal abduction of the glenohumeral joint
What are the three types of motions of the glenohumeral joint?
abduction, flexion, horizontal adduction , and internal rotation (all of glenohumeral joint)
Which vertebrae slip lower three ribs?
posterior ilium crest, back of sacrum and spinous process of lumbar and lower 6 thoracic vertebrae, slips lower three ribs
Why is the glenohumeral ligament important?
this ligament is important to providing both anterior and posterior stability to the glenohumeral joint
What is the range of motion of the glenohumeral joint in the frontal plane?
The range of motion of the glenohumeral joint in the frontal plane is approximately 90-
Which pull stabilizes against inferior displacement of the humeral head?
Shoulder abduction; horizontal pull of supraspinatus also stabilizes against inferior displacement of the humeral head (especially against gravity)
What action prevents superior translation of the humerus?
Supraspinatus action prevents superior translation of the humerus.
What are upper and lower fibers?
Upper and lower fibers: internal rotation, adduction, and horizontal adduction; upper fibers only: flexion
What is the O in the ribs?
O: upper (clavicular) fibers-medial half of clavicle; lower (sternocostal) fibers- costal cartilages of first 6 ribs and adjoining ster num
What ligaments stretch to the end of ROM?
not stable, lax ligaments, lax capsule, shallow joint, and athletes tend to have extreme motions that will stretch to the end ROM
Do F-biceps brachii do diagonal abduction?
F- biceps brachii do not do diagonal abduction they do diagonal adduction
What are the muscles of the shoulder?
Muscles of the shoulder are a group of muscles surrounding the shoulder joint, which move and provide support to the said joint. Posterior axio-appendicular muscles. Extrinsic muscles: Trapezius, latissimus dorsi, levator scapulae, rhomboid major, rhomboid minor.
Where are the shoulder muscles located?
Four of them are found on the anterior aspect of the shoulder, whereas the rest are located on the shoulder’s posterior aspect and in the back . Based on their location, the shoulder muscles are grouped into:
What muscles attach to the clavicle?
Anterior shoulder muscles, also called the pectoral muscles, attach the upper extremity to the clavicle and the thoracic cage. These muscles include the pectoralis major, pectoralis minor, subclavius and the serratus anterior muscle. All of them are supplied by the respective branches of the brachial plexus .
What are the parts of the serratus anterior muscle?
The serratus anterior muscle is divided into three parts which differ in origins and insertions; superior, middle and inferior.
Where is the pectoralis minor located?
The pectoralis minor lies underneath the pectoralis major muscle. It originates at the rib cartilages 3-5 and inserts to the medial border and the coracoid process of the scapula. The medial pectoral nerve supplies the muscle. The pectoralis minor draws the scapula anteroinferiorly and anchors it to the thoracic cage.
Which muscle is the extrinsic muscle?
Extrinsic muscles are further subdivided into superficial and deep layers. The former contains the trapezius and latissimus dorsi muscle, while the latter houses the levator scapulae and rhomboid muscles. The intrinsic muscles of the posterior group include the deltoid, teres major and the muscles of the rotator cuff.
Where does the subclavius originate?
The subclavius muscle originates at the cartilage and the sternal end of the 1st rib. It inserts at the anteroinferior surface of the middle part of the clavicle. The nerve to the subclavius supplies this muscle. Its functions are to depress and hold the clavicle in position.
