Shoulder Anatomy Quiz

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Which nerve innervates the supraspinatus muscle?

Suprascapular nerve (correct)

Axillary nerve

Radial nerve

Musculocutaneous nerve

What common anatomical structure does the axillary nerve pass through to reach the posterior scapular region?

Suprascapular foramen

Spinoglenoid notch

Triangular space

Quadrangular space (correct)

Which nerve carries general sensation from the skin over the inferior part of the deltoid muscle?

Suprascapular nerve

Radial nerve

Medial cutaneous nerve of the arm

Superior lateral cutaneous nerve of the arm (correct)

Which artery is NOT found in the posterior scapular region?

Anterior circumflex humeral artery Signup and view all the answers

From which part of the brachial plexus does the suprascapular nerve originate?

Superior trunk Signup and view all the answers

What bones make up the framework of the shoulder region?

Clavicle, scapula, and proximal humerus Signup and view all the answers

Which muscle is responsible for elevating the scapula?

Levator scapulae Signup and view all the answers

What is the primary function of the deltoid muscle?

Abducting the arm Signup and view all the answers

Which muscle works with the trapezius to position the scapula on the trunk?

Rhomboid minor Signup and view all the answers

The trapezius muscle is innervated primarily by which nerve?

Accessory nerve Signup and view all the answers

What is the primary function of the rhomboid major muscle?

Elevating and retracting the scapula Signup and view all the answers

Which structure is not directly palpated between the trapezius and deltoid muscles?

Humerus Signup and view all the answers

Which of the following muscles helps in the abduction of the arm?

Deltoid Signup and view all the answers

What structure forms the suprascapular foramen?

Suprascapular notch and the superior transverse scapular ligament Signup and view all the answers

Which nerve passes through the quadrangular space?

Axillary nerve Signup and view all the answers

What is the primary function of the triangular space?

Bridging the axilla to the posterior scapular region Signup and view all the answers

Which artery passes through the triangular space?

Circumflex scapular artery Signup and view all the answers

What nerves primarily innervate the posterior scapular region?

Suprascapular and axillary nerves Signup and view all the answers

What structures pass through the triangular interval?

Radial nerve and profunda brachii artery Signup and view all the answers

Which muscles are generally associated with the boundaries of the quadrangular space?

Teres major and teres minor Signup and view all the answers

What is the primary role of the suprascapular nerve?

Innervating the supraspinatus and infraspinatus muscles Signup and view all the answers

Which muscle is not part of the rotator cuff?

Teres major Signup and view all the answers

Which nerve innervates the teres minor muscle?

Axillary nerve Signup and view all the answers

What is the primary action of the infraspinatus muscle?

Lateral rotation of the arm Signup and view all the answers

Which structure serves as a gateway to the posterior scapular region?

Suprascapular foramen Signup and view all the answers

Which muscle assists with abduction of the glenohumeral joint?

Supraspinatus Signup and view all the answers

What function does the long head of the triceps brachii perform at the glenohumeral joint?

Extension Signup and view all the answers

What is the origin of the supraspinatus muscle?

Medial two-thirds of the supraspinous fossa of the scapula Signup and view all the answers

Which muscle's insertion is the medial lip of the intertubercular sulcus on the anterior surface of the humerus?

Teres major Signup and view all the answers

Which artery originates at the base of the neck as a branch of the thyrocervical trunk?

Suprascapular artery Signup and view all the answers

What is the primary function of the posterior circumflex humeral artery?

Supply blood to the glenohumeral joint Signup and view all the answers

Which artery enters the posterior scapular region through the triangular space?

Circumflex scapular artery Signup and view all the answers

What characterizes the vascular network in the posterior scapular region?

It consists of interconnections between major arteries. Signup and view all the answers

Which artery is a branch of the subscapular artery?

Circumflex scapular artery Signup and view all the answers

Shoulder Anatomy Quiz

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Questions and Answers

Which nerve innervates the supraspinatus muscle?

What common anatomical structure does the axillary nerve pass through to reach the posterior scapular region?

Which nerve carries general sensation from the skin over the inferior part of the deltoid muscle?

Which artery is NOT found in the posterior scapular region?

From which part of the brachial plexus does the suprascapular nerve originate?

What bones make up the framework of the shoulder region?

Which muscle is responsible for elevating the scapula?

What is the primary function of the deltoid muscle?

Which muscle works with the trapezius to position the scapula on the trunk?

The trapezius muscle is innervated primarily by which nerve?

What is the primary function of the rhomboid major muscle?

Which structure is not directly palpated between the trapezius and deltoid muscles?

Which of the following muscles helps in the abduction of the arm?

What structure forms the suprascapular foramen?

Which nerve passes through the quadrangular space?

What is the primary function of the triangular space?

Which artery passes through the triangular space?

What nerves primarily innervate the posterior scapular region?

What structures pass through the triangular interval?

Which muscles are generally associated with the boundaries of the quadrangular space?

What is the primary role of the suprascapular nerve?

Which muscle is not part of the rotator cuff?

Which nerve innervates the teres minor muscle?

What is the primary action of the infraspinatus muscle?

Which structure serves as a gateway to the posterior scapular region?

Which muscle assists with abduction of the glenohumeral joint?

What function does the long head of the triceps brachii perform at the glenohumeral joint?

What is the origin of the supraspinatus muscle?

Which muscle's insertion is the medial lip of the intertubercular sulcus on the anterior surface of the humerus?

Which artery originates at the base of the neck as a branch of the thyrocervical trunk?

What is the primary function of the posterior circumflex humeral artery?

Which artery enters the posterior scapular region through the triangular space?

What characterizes the vascular network in the posterior scapular region?

Which artery is a branch of the subscapular artery?

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