Upper Extremity Muscles

Question 1

What does the Trapezius do?

Answer 1

elevation (raises), depression (lowers), adduction (out from body), upward rotation….of the shoulder

Question 2

Where does the Trapezius originate?

Answer 2

at the base of the skull, C7-T12 (large muscle!)

Question 3

Where does the Trapezius insert?

Answer 3

at the spine of the scapula, the acromion process and the clavicle

Question 4

What do the Rhomboids do?

Answer 4

elevation, adduction, downward rotation …. of shoulder

Question 5

Where do the Rhomboids originate?

Answer 5

at vertebra C6-T4

Question 6

Where do the Rhomboids insert?

Answer 6

at the vertebral border of the scapula (lateral border?)

Question 7

What does the Levator Scapulae do?

Answer 7

elevation and downward rotation of shoulder

Question 8

Where does Levator Scapulae originate?

Answer 8

on vertebra C1-C4

Question 9

Where does Levator Scapulae insert?

Answer 9

on the superior angle of the scapula

Question 10

What does Serratus Anterior do?

Answer 10

abduction, upward rotation and depression of shoulder

Question 11

Where does Serratus Anterior originate?

Answer 11

on the upper 8 ribs

Question 12

Where does Serratus Anterior insert?

Answer 12

on the anterior vertebral border of the scapula (lateral border?)

Question 13

What does Teres Major do?

Answer 13

medial rotation, adduction and extension of the upper arm

Question 14

Where does Teres Major originate?

Answer 14

at the inferior angle of the scapula

Question 15

Where does Teres Major insert?

Answer 15

at the intertubercular groove

Question 16

What does Latissimus Dorsi do?

Answer 16

medial rotation, adduction and extension of upper arm

Question 17

Where does Latissimus Dorsi originate?

Answer 17

at ribs 8-12, and at the spinous processes of the lower thoracic and lumbar vertebrae

Question 18

Where does Latissimus Dorsi insert?

Answer 18

at the intertubercular groove

Question 19

Where does Pectoralis Major insert?

Answer 19

at the intertubercular groove and the greater tubercle of the humerus

Question 20

Where does Subscapularis insert?

Answer 20

at the lesser tubercle of the humerus

Question 21

Where does Infrascapularis insert?

Answer 21

at the greater tubercle of the humerus

Question 22

Where does Teres Minor insert?

Answer 22

at the greater tubercle of the humorus

Question 23

Where does Supraspinatus insert?

Answer 23

at the greater tubercle of the humerus

Question 24

Where does Pectoralis Major originate?

Answer 24

at the clavicle and the sternum

Question 25

Where does Subscapularis originate?

Answer 25

at the subscapular fossa

Question 26

Where does Infraspinatus originate?

Answer 26

at the infraspinatus fossa

Question 27

Where does Teres Minor originate?

Answer 27

at the lateral border of the scapula

Question 28

Where does Supraspinatus originate?

Answer 28

at the supraspinatus fossa

Question 29

What does Supraspinatus do?

Answer 29

abduction of the humerus

Question 30

What does Infraspinatus do?

Answer 30

lateral rotation of the humerus

Question 31

What does Teres Minor do?

Answer 31

lateral rotation and adduction of the humerus

Question 32

What does Subscapularis do?

Answer 32

medial rotation and adduction of the humerus

Question 33

What does Pectoralis Major do?

Answer 33

medial rotation and adduction of the humerus

Question 34

What muscles insert on the greater tubercle of the humerus?

Answer 34

1) pectoralis major; 2) infraspinatus; 3) teres minor; 4) Supraspinatus

Question 35

What muscles insert on the lesser tubercle of the humerus?

Answer 35

1) subscapularis

Question 36

What muscles insert on the intertubercular groove of the humerus?

Answer 36

1) teres major; 2) latissimus dorsi; 3) pectoralis major

Question 37

Which upper arm muscles can medially rotate the humerus?

Answer 37

1) subscapularis; 2) pectoralis major; 3) latissimus dorsi; 4) teres major

Question 38

Which upper arm muscles can laterally rotate the humerus?

Answer 38

1) infraspinatus; 2) teres minor

Question 39

Which upper arm muscles can abduct the humerus?

Answer 39

1) supraspinatus

Question 40

Which upper arm muscles can adduct the humerus?

Answer 40

1) teres minor; 2) pectoralis major; 3) latissimus dorsi; 4) teres major

Question 41

Which upper arm muscles can extend the humerus?

Answer 41

1) teres major; 2) latissimus dorsi

Question 42

What muscles originate on the scapula?

Answer 42

1) teres major; 2) subscapularis; 3) infrascapularis; 4) teres minor; 5) supraspinatus

Question 43

Which muscles have origins on cervical vertebrae?

Answer 43

1) trapezius; 2) rhomboids; 3) levator scapulae