Mid Sem Extra

Question 1

Retractors of thoracic muscles on the Scapula

Answer 1

• trapezius

- rhomboids

Question 2

Protractors of thoracic muscles on scapula

Answer 2

• pectoralis minor

- serratus anterior

Question 3

Elevators of thoracic muscles on scapula

Answer 3

• rhomboid major and minor
• levator scapulae
• trapezius (superior)

Question 4

Depressors of thoracic muscles on scapula

Answer 4

• trapezius (inferior)

- pectoralis minor

Question 5

Action of rhomboid major and minor?

Answer 5

Elevates and retracts (adducts) scapula

Inferiorly rotates scapula (downwards)

Question 6

Action of pectoralis minor?

Answer 6

Protracts and depresses scapula

Question 7

Action of serratus anterior

Answer 7

Protracts scapula

Superiorly rotates scapula (upwards)

Question 8

which muscles of the pectoral girdle elevate?

Answer 8

• superior trapezius
• levator scapulae
• rhomboids

Question 9

which muscles of pectoral girdle depress?

Answer 9

• inferior trapezius

- pectoralis minor

Question 10

which muscles of pectoral girdle protract?

Answer 10

• serratus anterior

- pectoralis minor

Question 11

which muscles of pectoral girdle retract?

Answer 11

• rhomboids

- middle trapezius

Question 12

which muscles of pectoral girdle upward rotation?

Answer 12

• superior and inferior trapezius

- serratus anterior

Question 13

which muscles of pectoral girdle downward rotate?

Answer 13

• levator scapulae

- rhomboids

Question 14

what are the four rotator cuff muscles? (SitS)

Answer 14

• infraspinatus
• supraspinatus
• teres minor
• subscapularis

Question 15

which muscle is the most powerful flexor of the forearm?

Answer 15

brachialis

Question 16

function of interosseous membrane?

Answer 16

• separates flexor and extensor forearm compartments

Question 17

which muscle assists in both pronation and supination of the forearm?

Answer 17

brachioradialis

Question 18

which muscles make up the thenar eminence?

Answer 18

• abductor pollicis brevis
• flexor pollicis brevis
• opponens pollicis

Question 19

which arm muscles do not attach to the humerus

Answer 19

• flexor digitorum profundus (FDP)
• Pronator quadratus (PQ)
• extensor pollicis longus (EPL)

Question 20

shared action of deltoid and supraspinatus?

Answer 20

abduction of arm

Question 21

shared action of latissimus dorsi, teres major, coracobrachialis, pectoralis major

Answer 21

adduction of arm

Question 22

shared action of infraspinatus, posterior deltoid and teres minor?

Answer 22

lateral rotation of arm

Question 23

shared action of latissimus dorsi, subscapularis, anterior deltoid, teres major, pectoralis major?

Answer 23

medial rotation of arm

Question 24

shared action of teres major, long head of triceps brachii, latissimus dorsi, posterior deltoid?

Answer 24

extension of arm

Question 25

shared action of biceps brachii, pectoralis major, anterior deltoid, coracobracialis?

Answer 25

flexion of arm