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Shoulder Anatomy Quiz: Identify Muscles, Bones, and Landmarks

Quick, free shoulder muscles quiz to check your knowledge. Instant results.

Editorial: Review CompletedCreated By: Isabelle CostelloUpdated Aug 24, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art illustration for shoulder anatomy quiz on dark blue background

This shoulder anatomy quiz helps you identify the main bones, muscles, and landmarks so you can study smarter and spot weak areas fast. Want to zoom in on stability and movement? Try the shoulder joint quiz or explore the shoulder girdle anatomy quiz. For bone landmarks, the scapula anatomy quiz gives extra practice with clear visuals.

Which structure on the scapula serves as the origin of the long head of the biceps brachii?
Infraglenoid tubercle
Supraglenoid tubercle - Explanation: The long head of the biceps originates from the supraglenoid tubercle of the scapula and runs through the intertubercular groove.
Acromion
Coracoid process
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The long head of the triceps brachii originates from which bony landmark?
Infraglenoid tubercle - Explanation: The long head of the triceps takes origin from the infraglenoid tubercle of the scapula.
Greater tubercle
Coracoid process
Supraglenoid tubercle
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The acromioclavicular joint is classified as which type of synovial joint?
Ball-and-socket joint
Plane synovial joint - Explanation: The AC joint permits gliding movements between the acromion and clavicle.
Pivot joint
Hinge joint
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Which border of the scapula bears the glenoid cavity?
Medial (vertebral) border
Lateral (axillary) border - Explanation: The pear-shaped glenoid cavity lies on the lateral border of the scapula.
Inferior border
Superior border
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The scapular spine continues laterally as which structure?
Glenoid cavity
Coracoid process
Acromion - Explanation: The spine of the scapula broadens laterally to form the acromion process.
Supraglenoid tubercle
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Which muscle initiates the first 15 degrees of shoulder abduction?
Infraspinatus
Supraspinatus - Explanation: Supraspinatus initiates abduction before the deltoid becomes the primary abductor.
Deltoid (middle fibers)
Subscapularis
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Which ligament converts the suprascapular notch into a foramen?
Superior transverse scapular ligament - Explanation: This ligament spans the suprascapular notch, creating a foramen for the suprascapular nerve.
Transverse humeral ligament
Coracoclavicular ligament
Coracoacromial ligament
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Which ligament retains the long head of the biceps tendon in the intertubercular groove?
Inferior glenohumeral ligament
Transverse humeral ligament - Explanation: It bridges the intertubercular groove, holding the biceps tendon in place.
Coracohumeral ligament
Coracoacromial ligament
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Which muscle is the primary powerful external rotator of the shoulder?
Infraspinatus - Explanation: Infraspinatus is the main external rotator, assisted by teres minor.
Teres major
Subscapularis
Pectoralis major
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Which nerve innervates the teres minor muscle?
Suprascapular nerve
Thoracodorsal nerve
Upper subscapular nerve
Axillary nerve - Explanation: The axillary nerve (C5-C6) supplies deltoid and teres minor.
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Which nerves supply the subscapularis muscle?
Upper and lower subscapular nerves - Explanation: Subscapularis receives innervation from both upper and lower subscapular branches of the posterior cord.
Axillary nerve only
Suprascapular nerve only
Musculocutaneous nerve
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Which best describes the primary actions of teres major at the shoulder?
Abduction and external rotation
Extension only
Flexion and abduction
Adduction and internal rotation - Explanation: Teres major assists in adduction and medial rotation of the humerus.
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The sternoclavicular joint is best classified as which synovial joint type?
Saddle synovial joint - Explanation: The SC joint is a saddle joint functionally acting like a ball-and-socket, allowing wide range of motion.
Pivot joint
Plane joint
Hinge joint
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Which space transmits the axillary nerve along with the posterior circumflex humeral artery?
Suprascapular foramen
Triangular interval
Triangular space
Quadrangular space - Explanation: The axillary nerve and posterior circumflex humeral artery pass through the quadrangular space.
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Which structure is found within the triangular space of the posterior shoulder?
Posterior circumflex humeral artery
Circumflex scapular artery - Explanation: The triangular space transmits the circumflex scapular artery (no major nerve).
Axillary nerve
Radial nerve
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Which artery is most commonly associated with fractures of the surgical neck of the humerus?
Circumflex scapular artery
Suprascapular artery
Posterior circumflex humeral artery - Explanation: It accompanies the axillary nerve around the surgical neck and is at risk in fractures.
Anterior circumflex humeral artery
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The superior facet of the greater tubercle receives the insertion of which tendon?
Teres minor
Subscapularis
Infraspinatus
Supraspinatus - Explanation: Supraspinatus inserts on the superior facet of the greater tubercle.
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Which component of the glenohumeral ligament complex primarily resists anterior-inferior translation in abduction with external rotation?
Middle glenohumeral ligament
Coracoclavicular ligament
Inferior glenohumeral ligament complex - Explanation: The IGHL, especially its anterior band, stabilizes the GH joint in ABER positions.
Superior glenohumeral ligament
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Which structure forms the medial boundary of the quadrangular space?
Long head of triceps brachii - Explanation: Quadrangular space boundaries include teres minor (superior), teres major (inferior), long head triceps (medial), humerus (lateral).
Shaft of the humerus
Teres major
Teres minor
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Which test position most challenges the anterior band of the inferior glenohumeral ligament complex clinically (ABER)?
90 degrees flexion with internal rotation
Neutral with internal rotation
Full adduction with external rotation
90 degrees abduction with external rotation - Explanation: This position stresses the anterior band of the IGHL.
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Study Outcomes

  1. Identify Major Shoulder Muscles -

    Recognize key muscles such as the supraspinatus, infraspinatus, teres minor, and subscapularis, and explain their roles in shoulder movement and stability.

  2. Distinguish Key Bony Landmarks -

    Locate and describe important structures like the acromion, coracoid process, glenoid cavity, and clavicle to navigate shoulder joint anatomy effectively.

  3. Differentiate Shoulder Joint Movements -

    Understand the mechanics of abduction, adduction, flexion, extension, and rotation by linking each movement to its primary muscle groups.

  4. Analyze Muscle Interactions -

    Examine how agonist, antagonist, and synergist muscles coordinate to produce smooth and controlled shoulder motions.

  5. Apply Anatomical Knowledge Clinically -

    Use your understanding of shoulder anatomy to identify potential injury sites and suggest appropriate exercises for rehabilitation or strength training.

Cheat Sheet

  1. Rotator Cuff Muscles & Mnemonic -

    Review the four rotator cuff muscles - Supraspinatus, Infraspinatus, Teres Minor, and Subscapularis - using the "SITS" mnemonic from Netter's Anatomy Atlas. In a shoulder muscles quiz, knowing each muscle's origin on the scapula and insertion on the humerus is key to distinguishing their roles in stabilization and rotation. Remember: "SITS" helps you ace every shoulder region anatomy test by locking in both names and functions.

  2. Bony Landmarks of the Scapula and Clavicle -

    Master the bony landmarks of the scapula and clavicle, including the spine, acromion, coracoid process, and the lateral end of the clavicle as outlined in Gray's Anatomy. In a shoulder joint anatomy quiz, palpating or visualizing these structures ensures accurate identification of attachment sites for muscles and ligaments.

  3. Joint Types & Movements -

    Differentiate between the glenohumeral, acromioclavicular, sternoclavicular, and scapulothoracic joints - gliding, ball-and-socket, and functional saddle types - by consulting the American Academy of Orthopaedic Surgeons' shoulder biomechanics resources. Each joint contributes distinct movements like elevation, depression, protraction, and retraction. A targeted shoulder anatomy quiz often tests on which joint allows circumduction versus pure rotation.

  4. Biomechanics of Shoulder Abduction -

    Analyze the biomechanics of shoulder abduction: the supraspinatus initiates the first 15 degrees before the deltoid takes over up to 90 degrees, as detailed in the Journal of Orthopaedic Research. This coordinated action is crucial for passing a shoulder muscles quiz focused on movement patterns. Including the scapulohumeral rhythm (2:1 ratio of humeral to scapular motion) can be a showstopper in any shoulder region anatomy test.

  5. Neurovascular Supply & Clinical Relevance -

    Map the neurovascular supply around the shoulder, such as the axillary nerve around the surgical neck of the humerus and the suprascapular vessels traversing the suprascapular notch, referencing Anatomy & Physiology by OpenStax. Clinically, a shoulder anatomy quiz may present scenarios like a surgical neck fracture causing deltoid paralysis and sensory loss over the "regimental badge" area. Understanding these relationships bridges academic knowledge with real-world clinical corollaries.

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