Practical Exam Prep Origin/Insertion/Action

Question 1

Deltoid Origin

Answer 1

Lateral 1/3rd of clavicle, acromion, lateral 1/3rd of scapular spine

Question 2

Deltoid Insertion

Answer 2

Deltoid Tuberosity

Question 3

Deltoid Actions (7)

Answer 3

All Fibers
-Abduct the shoulder

Anterior Fibers
-Flex the shoulder
-Medially rotate
-Horizontally adduct

Posterior Fibers
-Extend the shoulder
-Laterally rotate
-Horizontally abduct

Question 4

Teres Major Origin

Answer 4

Lower 1/3rd of lateral scapular border

Question 5

Teres Major Insertion

Answer 5

Lesser Tubercle of the humerus

Question 6

Teres Major Actions (3)

Answer 6

-Extension of the shoulder
-Medially Rotate the shoulder
-Adduct the shoulder

Question 7

Teres Minor Origin

Answer 7

Upper 2/3rds of lateral scapular border

Question 8

Teres Minor Insertion

Answer 8

Greater Tubercle of The Humerus

Question 9

Teres Minor Actions (3)

Answer 9

-Stabilize the head of the humerus
-Laterally rotate
-Adduct the shoulder

Question 10

Brachioradialis Origin

Answer 10

Humerus, proximal 2/3rds of lateral supracondylar ridge of humerus

Question 11

Brachioradialis Insertion

Answer 11

Styloid process of radius

Question 12

Brachioradialis Actions (3)

Answer 12

-Supinate the forearm (against resistance)
-Pronate the forearm (against resistance)
-Flex humeroulnar joint

Question 13

Pectoralis Major Origin

Answer 13

Medial 1/2 of Clavicle, Sternum, Cartilage of first 6 ribs

Question 14

Pectoralis Major Insertion

Answer 14

Bicipital Groove

Question 15

Pectoralis Major Actions (6)

Answer 15

-Extend glenohumeral joint (from sternal fibers, from flexion starting position)
-Medially Rotate shoulder
-Adduct Shoulder
-Horizontally Adduct
-Flex the shoulder
-Elevate thorax (during forced inhalation)

Question 16

Trapezius Origin

Answer 16

External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7 to T12

Question 17

Trapezius Insertion

Answer 17

Lateral 1/3rd of clavicle, acromion, and spine of the scapula

Question 18

Trapezius Actions (9)

Answer 18

Bilaterally:
-Extend the head and neck

Unilaterally:
- Laterally Flex head and neck
- Rotate head and neck, opposite side
-Elevate the scapula
-Upwardly rotate the scapula

Middle Fibers:
-Adduct the scapula
-Stabilize the scapula

Lower Fibers:
-Depress the scapula
-Upwardly rotate the scapula

Question 19

Flexor Carpi Radialis Origin

Answer 19

Common flexor tendon from medial epicondyle of humerus

Question 20

Flexor Carpi Radialis Insertion

Answer 20

Bases of 2nd and 3rd metacarpals

Question 21

Flexor Carpi Radialis Actions (2)

Answer 21

-Flex the wrist
-Radial deviation

Question 22

Rhomboids Origin

Answer 22

SPs of C7 - T5

Minor: C7+T1
Major: T2-T5

Question 23

Rhomboids Insertions

Answer 23

Medial border of scapula:
Minor = across from spine of scapula
Major = from inferior angle to scapular spine

Question 24

Rhomboids Actions (3)

Answer 24

-Adduct scapula
-“Downward” rotation of scapula
-Elevate scapula

Question 25

Supinator Origin (2)

Answer 25

Lateral epicondyle of humerus + lateral posterior proximal ulna

Question 26

Supinator Insertion

Answer 26

Lateral anterior proximal radius

Question 27

Supinator Action (1)

Answer 27

Supinate the forearm

Question 28

Levator Scapula Origin

Answer 28

TPs C1 to C4

Question 29

Levator Scapular Insertion

Answer 29

Medial border of the scapula, from just above across the scapular spine to anterior angle

Question 30

Levator Scapula Actions (5)

Answer 30

Bilaterally:
-Extend head and Neck

Unilaterally:
-Laterally flex head and neck same side
-Rotate head and neck same side
-Elevate scapula
-Downward rotate the scapula (like a lateral tilt)

Question 31

Biceps Brachii Origin

Answer 31

Short Head: Coracoid process of the scapula
Long Head: Supraglenoid tubercle of scapula (passing through intertubercular groove)

Question 32

Biceps Brachii Insertion

Answer 32

Radial Tuberosity + biceps aponeurosis

Question 33

Biceps Actions (3)

Answer 33

-Flex the elbow
-Supinate forearm
-Flex the shoulder

Question 34

Extensor Carpi Ulnaris Origin

Answer 34

Common Extensor Tendon from Lateral epicondyle of the humerus

Question 35

Extensor Carpi Ulnaris Insertion

Answer 35

Base of the 5th metacarpal, posterior

Question 36

Extensor Carpi Ulnaris Actions

Answer 36

-Extend the wrist
-Ulnar deviation

Question 37

SCM Origin

Answer 37

Medial 1/3rd of clavicle and top of manubrium

Question 38

SCM Insertion

Answer 38

Mastoid process of temporal bone

Question 39

SCM Action

Answer 39

Bilaterally:
-Flex head/neck

Unilaterally:
-Laterally flex head/neck, same side
-Rotate head and neck, opposite side

Question 40

Triceps Brachia Origin

Answer 40

Infraglenoid tubercle of the scapula, posterior humerus

Question 41

Triceps Brachii Insertion

Answer 41

Olecranon process of the ulna

Question 42

Triceps Brachii Action

Answer 42

-Adduct shoulder
-Extend elbow
-Extend shoulder

Question 43

Pronator Teres Origin

Answer 43

Common flexor tendon of medial epicondyle of humerus
(+coronoid process of ulna)

Question 44

Pronator Teres Actions (2)

Answer 44

Pronate forearm
Flex elbow

Question 45

Quadratus Lumborum Origin

Answer 45

Posterior Iliac Crest

Question 46

Quadratus Lumborum Insertion

Answer 46

Lowest rib + TPs of L1-L4

Question 47

Quadratus Lumborum Actions

Answer 47

Unilaterally:
-Laterally flex the spine
-Laterally tilts the hip
-Assists to extend the spine

Question 48

Palmaris Longus Origin

Answer 48

Common Flexor tendon of medial epicondyle of humerus

Question 49

Palmaris Longus Insertion

Answer 49

Flexor retinaculum and palmar aponeurosis

Question 50

Palmaris Longus Actions

Answer 50

-Flex wrist
Tense the palmar fascia