Intrinsic Shoulder Muscles and Their Innervations

Which of the following muscles is not considered an intrinsic shoulder muscle?

• Infraspinatus

• Biceps Brachii

• Deltoid

• Supraspinatus

What is the primary function of the axillary nerve?

• Innervate the subscapularis

• Innervate the supraspinatus

• Innervate the deltoid and teres minor

• Innervate the biceps brachii

Through which space does the axillary nerve pass?

• Suprascapular notch

• Infrascapular fossa

• Quadrangular space

• Triangular space

Which nerve passes under the transverse scapular ligament?

• Subscapular nerve

• Axillary nerve

• Suprascapular nerve

• Radial nerve

The suprascapular nerve innervates which of the following muscles?

• Deltoid and teres minor

• Supraspinatus and infraspinatus

• Subscapularis and teres major

• Biceps brachii and triceps brachii

What is the significance of the suprascapular notch in nerve pathways?

• It is a passage for the axillary nerve

• It is a passage for the radial nerve

• It is a passage for the suprascapular nerve

• It is a passage for the median nerve

Which nerves are responsible for innervating the subscapularis muscle?

• Median and ulnar nerves

• Suprascapular and axillary nerves

• Upper and lower subscapular nerves

• Axillary and radial nerves

The lower subscapular nerve innervates which muscle exclusively?

• Deltoid

• Teres major

• Infraspinatus

• Supraspinatus

What is the relationship between the teres major and subscapularis in terms of innervation?

• Both are innervated by the suprascapular nerve

• Teres major is innervated by the upper subscapular nerve, while subscapularis is innervated by the lower subscapular nerve

• Both are innervated by the axillary nerve

• Teres major is innervated by the lower subscapular nerve, while subscapularis is innervated by both upper and lower subscapular nerves

Which nerve is not involved in the innervation of intrinsic shoulder muscles?

• Subscapular nerve

• Median nerve

• Axillary nerve

• Suprascapular nerve