Shoulder & Brachium Questions

What do the muscles pectoralis major and pectoralis minor have in common?

• origin

• insertion

• general location

• main action

What muscle depresses the clavicle when the upper limb is moving?

• clavicular head of pectoralis major

• subclavius

• serratus anterior

• upper fibres of trapezius

Middle trapezius has the same main action as what other muscle?

• latissimus dorsi

• teres major

• rhomboids major

• teres minor

What rotator cuff muscle performs internal rotation of the shoulder?

• subscapularis

• supraspinatus

• infraspinatus

• teres minor

What is the main action of teres minor on the shoulder joint?

• medial rotation

• lateral rotation

• abduction

• flexion

What muscle initiates shoulder abduction?

• supraspinatus

• upper fibres of trapezius

• deltoid

• pectoralis major

What role does the long head of biceps brachii play during shoulder flexion?

• prime mover

• antagonist

• fixator

• synergist

What plane(s) does triceps brachii produce movement in?

• sagittal

• frontal

• transverse

• sagittal + transverse

What bone does the long head of biceps brachii insert on?

• Humerus

• Ulna

• Radius

• Scapula

What is the innervation of trapezius?

• Axillary nerve

• Cranial Nerve XI (Accessory Nerve)

• Cranial Nerve X (Vagus Nerve)

• Suprascapular Nerve