Muscles A-D (Upper Extremity)

Question 1

Pectoralis Major

Answer 1

Flexion, adduction, and medial rotation of arm

Question 2

Pectoralis Minor (Insertion)

Answer 2

Coracoid process of scapula

Rotates scapula in movements of adduction of arm

Question 3

Serratus Anterior

Answer 3

Pulls scapula ventralwards as in pushing movements, rotates scapula during abduction of arm

Question 4

Subclavius

Answer 4

Nothing

Question 5

Trapezius (Origin and Insertion)

Answer 5

External Occiptial protuberance (inion), ligamentum nuchae, medial 1/3 of the superior nuchal line, supraspinous processes of C7 all thoracic vertebrae & supraspinous ligaments
Posterior surface of lateral 1/3 of clavicle, acromion process, and superior lip of the spine of the scapula

Bilateral: brace shoulders and retract head
Unilateral: rotation of scapula in full abduction and flexion of arm

Question 6

Latissimus Dorsi

Answer 6

Extension, adduction, and medial rotation of the arm; draws the shoulder downward and backward

Question 7

Levator Scapulae

Answer 7

Raises scapula and draws it medially (adduction of scapula)

Question 8

Rhomboideus Minor

Answer 8

Adduction of scapula and support

Question 9

Rhomboideus Major

Answer 9

Adduction of scapula and support

Question 10

Deltoid

Answer 10

Abduction of arm; clavicular portion flexes arm and spine portion extends arm

Question 11

Subscapularis

Answer 11

Medial rotation of the arm; draws humerus toward glenoid fossa, strengthening shoulder joint

Question 12

Supraspinatus

Answer 12

Abduction and lateral rotation of the arm; draws humerus toward glenoid fossa, strengthening shoulder joint

Question 13

Infraspinatus

Answer 13

Lateral rotation of arm; draws humerus toward glenoid fossa, strengthening shoulder joint

Question 14

Teres Minor

Answer 14

Lateral rotation of arm; draws humerus toward glenoid fossa, strengthening shoulder joint

Question 15

Teres Major

Answer 15

Adduction, extension, and medial rotation of arm

Question 16

Coracobrachialis (Origin)

Answer 16

Coracoid process and from common septum between it and the short head of the biceps

Flexion and adduction of arm

Question 17

Biceps Brachii (Origin and Insertion)

Answer 17

Short head: coracoid processLong head: supraglenoid tuberosity/tubercle superior to glenoid fossa

Biceps tendon to proximal radius and bicipital aponeurosis to the deep fascia

Flexion of the arm and forearm and forced supination of the hand and forearm

Question 18

Brachialis

Answer 18

Flexion of the forearm

Question 19

Triceps Brachii

Answer 19

Extension of the forearm and extension and adduction of the arm

Question 20

Muscles of the upper limb attaching to the anterior and lateral thoracic wall

Answer 20

1. Pectoralis major
2. Pectoralis minor
3. Serratus Anterior
4. Subclavius

Question 21

Muscles connecting upper limb to the vertebral column

Answer 21

1. Trapezius
2. Latissimus Dorsi
3. Levator scapulae
4. Rhomboid Minor
5. Rhomboid Major

Question 22

Muscles of the Shoulder

Answer 22

1. Deltoid
2. Subscapularis
3. Supraspinatus
4. Infraspinatus
5. Teres Minor
6. Teres Major