Shoulder Joint

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  • 1/21 Questions

    The posterior deltiod, latissimus dorsi, and teres major have which of the following shoulder motions in common?

    • Flexion
    • Extension
    • Abduction
    • Lateral Rotation
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Shoulder Joint - Quiz
About This Quiz

This quiz focuses on the anatomy of the shoulder joint, assessing knowledge on muscle origins, insertions, and potential clinical implications of tenderness. It is designed for students and professionals in medical and allied health fields, enhancing understanding of shoulder musculoskeletal structure.

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  • 2. 

    You are asked to palpate for tenderness at the coracoid process of the scapula. If you locate tenderness at this spot, the patient may have soft tissue inflammation at the origin of which of the following muscles?

    • Teres major

    • Coracobrachialis

    • Pectoralis major

    • Long head of the biceps brachii

    Correct Answer
    A. Coracobrachialis
    Explanation
    Palpating for tenderness at the coracoid process of the scapula can indicate soft tissue inflammation at the origin of the coracobrachialis muscle. The coracobrachialis muscle attaches to the coracoid process and helps to flex and adduct the arm at the shoulder joint. If there is tenderness at this spot, it suggests that there may be inflammation or irritation of the coracobrachialis muscle.

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  • 3. 

    Which muscle originates on the lateral clavicle, the top of the acromion, and the scapular spine and inserts on the midpoint of the humerus on the lateral side?

    • All fibers of the deltiod

    • All fibers of the Trapezius

    • All Fibers of the pectoralis major

    • Latissimus dorsi

    Correct Answer
    A. All fibers of the deltiod
    Explanation
    The correct answer is All fibers of the deltoid. The deltoid muscle originates on the lateral clavicle, the top of the acromion, and the scapular spine, and inserts on the midpoint of the humerus on the lateral side. It is responsible for various movements of the shoulder joint, including abduction, flexion, and extension.

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  • 4. 

    Damage to which of the following nerves could result in weakness of the deltoid muscle?

    • Radial nerve

    • Musculocutcaneous nerve

    • Axillary nerve

    • Suprscapular nerve

    Correct Answer
    A. Axillary nerve
    Explanation
    Damage to the axillary nerve could result in weakness of the deltoid muscle. The axillary nerve innervates the deltoid muscle, which is responsible for abduction of the arm at the shoulder joint. If the axillary nerve is damaged, the deltoid muscle may not receive proper signals for contraction, leading to weakness or paralysis of the muscle. This can result in difficulty in raising the arm laterally away from the body.

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  • 5. 

    Horizontal abduction of the shoulder occurs in which plane and through which axis?

    • Transverse plane through a transverse axis

    • Transverse plane throught a vertical axis

    • Frontal plane through a sagittal axis

    • Frontal plane through a vertical axis

    Correct Answer
    A. Transverse plane throught a vertical axis
    Explanation
    The correct answer is "Transverse plane through a vertical axis". Horizontal abduction of the shoulder refers to moving the arm away from the midline of the body in a transverse plane. This movement occurs around a vertical axis, which runs from top to bottom through the shoulder joint.

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  • 6. 

    Damages to which of the following nerves could result in weakness of the coracobrachialis muscle?

    • Radial nerve

    • Musculocutcaneous nerve

    • Axillary nerve

    • Suprascapulaar nerve

    Correct Answer
    A. Musculocutcaneous nerve
    Explanation
    The musculocutaneous nerve innervates the coracobrachialis muscle, which is responsible for flexion and adduction of the arm at the shoulder joint. If this nerve is damaged, it can lead to weakness of the coracobrachialis muscle, affecting its function. The other nerves listed do not directly innervate the coracobrachialis muscle, so damage to them would not result in weakness of this specific muscle.

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  • 7. 

    The pectoralis major, latissimus dorsi, and teres major have which of the following shoulder motions in common?

    • Horizontal abduction

    • Adduction

    • Lateral rotation

    • Flexion

    Correct Answer
    A. Adduction
    Explanation
    The pectoralis major, latissimus dorsi, and teres major muscles all contribute to adduction of the shoulder. Adduction refers to the movement of bringing the arm towards the midline of the body. These muscles work together to bring the arm closer to the body, allowing for movements such as hugging or crossing the arms in front of the chest.

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  • 8. 

    Which muscle originates on the infraglenoid tubercle of the scapula and inserts on the olecranon process of the ulna?

    • Long head of the triceps brachii

    • Lateral head of the triceps brachii

    • Long head of the biceps brachii

    • Short head of the biceps brachii

    Correct Answer
    A. Long head of the triceps brachii
    Explanation
    The correct answer is the Long head of the triceps brachii. This muscle originates on the infraglenoid tubercle of the scapula and inserts on the olecranon process of the ulna.

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  • 9. 

    Which bony landmark of the humerus is located on the lateral side near the midpoint of the shaft?

    • Bicipital groove

    • Lesser tubercle

    • Deltoid tuberosity

    • Humeral head

    Correct Answer
    A. Deltoid tuberosity
    Explanation
    The deltoid tuberosity is a bony landmark of the humerus that is located on the lateral side near the midpoint of the shaft. It serves as the attachment site for the deltoid muscle, which is responsible for shoulder abduction and flexion. The bicipital groove is located on the anterior side of the humerus and serves as a passage for the biceps tendon. The lesser tubercle is located on the anterior side of the humerus, near the anatomical neck, and serves as an attachment site for the subscapularis muscle. The humeral head is the rounded proximal end of the humerus that articulates with the glenoid cavity of the scapula to form the shoulder joint.

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  • 10. 

    Which muscle originates on the anterior surface of the scapula and inserts on the lesser tubercle of the humerus?

    • Teres major

    • Teres minor

    • Subscapularis

    • Serratus anterior

    Correct Answer
    A. Subscapularis
    Explanation
    The muscle that originates on the anterior surface of the scapula and inserts on the lesser tubercle of the humerus is the Subscapularis. This muscle is located deep within the shoulder joint and is responsible for internal rotation of the arm. It also helps stabilize the shoulder joint and assists in movements such as throwing and pushing.

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  • 11. 

    Which of the following muscles perform shoulder hyperextension?

    • Teres major

    • Anconeus

    • Latissimus dorsi

    • Infraspinatus

    Correct Answer
    A. Latissimus dorsi
    Explanation
    The latissimus dorsi muscle is responsible for shoulder hyperextension. This muscle is located in the back and connects the upper arm bone to the spine and pelvis. When the latissimus dorsi contracts, it pulls the upper arm bone backward, causing hyperextension of the shoulder joint. The other muscles listed, such as the teres major, anconeus, and infraspinatus, are not primarily involved in shoulder hyperextension.

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  • 12. 

    Damage to which  of the following nerves could result in weakness of the infraspinatus muscle?

    • Radial nerve

    • Musculocutcaneous nerve

    • Axillary nerve

    • Suprascapular nerve

    Correct Answer
    A. Suprascapular nerve
    Explanation
    Damage to the suprascapular nerve could result in weakness of the infraspinatus muscle. The suprascapular nerve innervates the infraspinatus muscle, which is responsible for external rotation and stabilization of the shoulder joint. If the suprascapular nerve is damaged, it can lead to weakness or paralysis of the infraspinatus muscle, affecting its ability to perform these functions effectively.

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  • 13. 

    The Latissimus dorsi, subscapularis, and anterior deltoid have which of the following shoulder motion in common?

    • Medial rotation

    • Lateral rotation

    • Adduction

    • Flexion

    Correct Answer
    A. Medial rotation
    Explanation
    The Latissimus dorsi, subscapularis, and anterior deltoid muscles all contribute to the motion of medial rotation in the shoulder joint. Medial rotation refers to the movement of the arm or shoulder towards the midline of the body. These muscles work together to generate this motion, allowing for actions such as bringing the arm across the chest or rotating the arm towards the body.

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  • 14. 

    Which muscles originate on the axillary border of the scapula and insert on the greater tubercle of the humerus?

    • Teres minor

    • Teres major

    • Infraspinatus

    • Subscapularis

    Correct Answer
    A. Teres minor
    Explanation
    Teres minor is the correct answer because it is one of the muscles that originates on the axillary border of the scapula and inserts on the greater tubercle of the humerus. The teres minor is a small muscle located on the lateral side of the scapula and it helps with the rotation and stabilization of the shoulder joint.

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  • 15. 

    Which muscle originates on the medial one-third of the clavicle and inserts on the lateral lip of the bicipital groove?

    • Anterior deltiod

    • Supraspinatus

    • Pectoralis Major, clavicular portion

    • Coracobrachialis

    Correct Answer
    A. Pectoralis Major, clavicular portion
    Explanation
    The correct answer is Pectoralis Major, clavicular portion. The pectoralis major muscle originates on the medial one-third of the clavicle and inserts on the lateral lip of the bicipital groove. It is responsible for flexion, adduction, and medial rotation of the arm at the shoulder joint.

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  • 16. 

    The reason you have your client laterally rotate his shoulder when moving between 90 and 180 degrees of shoulder abduction is to prevent what structure from hitting the acromion process?

    • Deltoid tuberosity

    • Lesser tuberosity

    • Adductor tubercle

    • Greater tubercle

    Correct Answer
    A. Greater tubercle
    Explanation
    When the shoulder is laterally rotated during abduction between 90 and 180 degrees, it allows the greater tubercle of the humerus to clear the acromion process. This movement prevents impingement or collision between the greater tubercle and the acromion, reducing the risk of injury and pain.

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  • 17. 

    Your next client has shoulder pain and loss of motion due to inflammation and fibrosis of the shoulder joint. The most likely diagnosis is which of the following?

    • Impingement syndrome

    • Calcific tendonitis

    • Abhesive capsulitis

    • Subluxation of long head of biceps tendon

    Correct Answer
    A. Abhesive capsulitis
    Explanation
    The most likely diagnosis for the client's shoulder pain and loss of motion due to inflammation and fibrosis of the shoulder joint is adhesive capsulitis. Adhesive capsulitis, also known as frozen shoulder, is a condition characterized by inflammation and thickening of the shoulder joint capsule, leading to pain and restricted movement. Impingement syndrome is a condition where the rotator cuff tendons become irritated and inflamed, causing pain and limited motion. Calcific tendonitis is the formation of calcium deposits in the tendons, leading to pain and inflammation. Subluxation of the long head of the biceps tendon refers to partial dislocation of the tendon, which may cause shoulder pain but is less likely to result in loss of motion.

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  • 18. 

    The rotator cuff muscle serve to hold the humeral head against the glenoid fossa and best serve to facilitate which arthrokinematic motion of the shoulder joint?

    • Roll

    • Spin

    • Glide

    • Shear

    Correct Answer
    A. Spin
    Explanation
    The rotator cuff muscles primarily function to hold the humeral head against the glenoid fossa. The arthrokinematic motion of the shoulder joint that best facilitates this function is spin. Spin refers to the rotational movement of one joint surface on another, and in the case of the shoulder joint, it allows for smooth and controlled rotation of the humeral head within the glenoid fossa. This motion is important for maintaining stability and proper alignment of the shoulder joint during various arm movements.

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  • 19. 

    All of the following can contribute to joint subluxation of the glenohumeral joint EXCEPT

    • Weight of the upper extremity

    • Gravity

    • Shallow Glenoid fossa

    • Strong lateral capsular ligaments

    Correct Answer
    A. Strong lateral capsular ligaments
    Explanation
    Strong lateral capsular ligaments do not contribute to joint subluxation of the glenohumeral joint. Joint subluxation occurs when the humeral head partially dislocates from the glenoid fossa. Factors such as the weight of the upper extremity, gravity, and a shallow glenoid fossa can all contribute to joint subluxation by creating instability and allowing the humeral head to move out of its normal position. However, strong lateral capsular ligaments provide stability to the joint and help prevent subluxation.

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  • 20. 

    You are palpating a person's shoulder and note that she has pain in the bicipital groove. You determine that this person could have tendonitus of which of the following muscles?

    • Short head of biceps brachii

    • Coracobrachialis

    • Long head of biceps brachii

    • Brachialis

    Correct Answer
    A. Coracobrachialis
    Explanation
    The coracobrachialis muscle is a small muscle located in the upper arm. It originates from the coracoid process of the scapula and inserts into the medial surface of the humerus. It assists in flexion and adduction of the arm at the shoulder joint. If a person has pain in the bicipital groove, it could indicate inflammation or tendonitis of the coracobrachialis muscle. This is because the bicipital groove is the location where the long head of the biceps brachii muscle and the tendon of the coracobrachialis muscle pass through.

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  • 21. 

    Which muscle flexes the shoulder through its entire range?

    • Subscapularis

    • Teres major

    • Pectoralis major, clavicular portion

    • Anterior deltoid

    Correct Answer
    A. Teres major
    Explanation
    The teres major muscle is responsible for flexing the shoulder through its entire range. This muscle is located on the back of the upper arm and connects the scapula to the humerus bone. It works together with other muscles to allow for movements such as lifting the arm forward and upward. The teres major is a powerful muscle that assists in various actions involving the shoulder joint, including flexion.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 05, 2011
    Quiz Created by
    Mj0409

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