Quiz 1 (3 out of 3)

Main action of the Deltoid

- ABduction (15-90 degrees)

- Can help with ALL actions EXCEPT ADduction

Main action of the Pectoralis major

ADduction, flexion, and medial rotation

Main action of the Latissimus dorsi (HINT: Straight arm over your head)

ADduction, extension, medial rotation

Main action of the Teres major

ADduction, medial rotation

Main action of the Coracobrachialis

Flexion, ADduction

(anterior side)

SItS muscles make up the...

Rotator cuff

Main action of the Supraspinatus

ABduction (0-15 degrees)

Main action of the Infraspinatus

Lateral rotation, ADduction

Main action of the Teres minor

Lateral rotation, ADduction

Main action of the Subscapularis

Medial rotation, ADduction

Main action of the Trapezius

Retraction, medial AND lateral rotation, elevation, depression, extension of neck

Main action of the Rhomboid minor (HINT: Butterfly shoulder blades/Shoulder rotation)

Retraction, medial rotation

Main action of the Rhomboid major

Retraction, medial rotation

Main action of the Levator scapulae

Elevation, medial rotation

Main action of the Pectoralis minor

Protraction, scapular stabilization

Main action of the Serratus anterior

Lateral rotation, protraction, holds scapula against ribcage

What muscle(s) are innervated by the axillary nerve?

Deltoid

Teres minor

What muscle(s) are innervated by the medial AND lateral pectoral n.?

Pectoralis major

What muscle(s) are innervated by the thoracodorsal n.?

Latissimus dorsi

What muscle(s) are innervated by the lower subscapular n.?

Teres major

What muscle(s) are innervated by the musculocutaneous n.? (MUSCLE ID HINT: "Commonly" pierces the muscle)

Coracobrachialis

What muscle(s) are innervated by the suprascapular n.?

Supraspinatus

Infraspinatus

What muscle(s) are innervated by the upper AND lower subscapular n.?

Subscapularis

What muscle(s) are innervated by the cranial nerve XI (AKA an accessory nerve)?

Trapezius

What muscle(s) are innervated by the dorsal scapular n.?

Rhomboid minor

Rhomboid major

Levator scapulae

What muscle(s) are innervated by the medial pectoral n.?

Pectoralis minor

What muscle(s) are innervated by the long thoracic n.? (HINT: SALT)

Serratus anterior

Deltoid

Lateral 1/2 of clavicle, acromion, scapular spine

Deltoid tuberosity

Pectoralis major

Medial 1/2 of clavicle, sternum, ribs 1-6

Intertubercular groove of humerus (lateral lip)

Pectoralis minor

Ribs 3-5

Coracoid process of scapula

Latissimus dorsi

Spinous process of thoracic, lumbar, and sacral vertebrae, iliac crest

Intertubercular groove of humerus

Teres major

Inferior angle of scapula

Intertubercular groove of humerus (medial lip)

Coracobrachialis

Coracoid process

Medial side of the humeral shaft

Supraspinatus

Supraspinous fossa of scapula

Greater tubercle of humerus

Infraspinatus

Infraspinous fossa of scapula

Greater tubercle of humerus

Teres minor

Lateral border of scapula

Greater tubercle of humerus

Subscapularis

Subscapular fossa of scapula

Lesser tubercle of humerus

Trapezius

Occipital bone, spinous processes of C7-T12

Lateral 1/3 of clavicle, scapular spine, acromion

Rhomboid minor

Spinous processes of C7-T1

Medial border of the scapula at the base of the scapular spine

Rhomboid major

Spinous processes of T2-T5

Medial border of the scapula below the scapular spine

Levator scapulae

Spinous processes of C1-C4

Medial border of the scapula above the scapula spine

Serratus anterior

Lateral surface of ribs 1-8

Anterior surface of medial border of scapula

"Lady between 2 majors" refers to...

Latissimus dorsi being between Teres major (medial) and Pectoralis major (lateral)