Makeup

Question 1

Pronator Teres - Origin

Answer 1

Humeral head: medial epicondyle via common flexor tendon; Ulnar head: coronoid process of ulna

Question 2

Pronator Teres - Insertion

Answer 2

Lateral radius middle of shaft (pronator tuberosity)

Question 3

Pronator Teres - Action

Answer 3

Pronation of forearm

Question 4

Pronator Teres - Innervation

Answer 4

Median nerve

Question 5

Flexor Carpi Ulnaris - Origin

Answer 5

Humeral Head: medial epicondyle (common flexor tendon); Ulnar Head: medial aspect of olecranon and proximal 2/3 of medial ulna

Question 6

Flexor Carpi Ulnaris - Insertion

Answer 6

Pisiform and hamate bones; base of 5th metacarpal

Question 7

Flexor Carpi Ulnaris - Action

Answer 7

Flexion of wrist; ulnar flexion (adduction) of wrist

Question 8

Flexor Carpi Ulnaris - Innervation

Answer 8

Ulnar nerve

Question 9

Supinator - Origin

Answer 9

Lateral epicondyle of humerus and supinator crest of lateral ulna (near radial notch)

Question 10

Supinator - Insertion

Answer 10

Proximal 1/3 of radial shaft

Question 11

Supinator - Action

Answer 11

Supination of forearm

Question 12

Supinator - Innervation

Answer 12

Radial nerve

Question 13

Flexor Carpi Radialis - Origin

Answer 13

Medial epicondyle (via common flexor tendon)

Question 14

Flexor Carpi Radialis - Insertion

Answer 14

Base of 2nd and 3rd metacarpals (anterior side)

Question 15

Flexor Carpi Radialis - Action

Answer 15

Flexion of wrist; radial flexion (abduction) of wrist

Question 16

Flexor Carpi Radialis - Innervation

Answer 16

Median nerve

Question 17

Flexor Digitorum Superficialis - Origin

Answer 17

Humeral-ulnar head: medial epicondyle via common flexor tendon and coronoid process of ulna; Radial head: oblique line of radius

Question 18

Flexor Digitorum Superficialis - Insertion

Answer 18

Base of middle phalanges of fingers 2-5

Question 19

Flexor Digitorum Superficialis - Action

Answer 19

Flexion of fingers 2-5 (PIP, MCP)

Question 20

Flexor Digitorum Superficialis - Innervation

Answer 20

Median nerve

Question 21

Palmaris Longus - Origin

Answer 21

Medial epicondyle (via common flexor tendon)

Question 22

Palmaris Longus - Insertion

Answer 22

Palmar aponeurosis and flexor retinaculum

Question 23

Palmaris Longus - Action

Answer 23

Flexion of wrist

Question 24

Palmaris Longus - Innervation

Answer 24

Median nerve

Question 25

Flexor Digitorum Profundus - Origin

Answer 25

Anterior and medial surface of ulna (proximal ½) and interosseous membrane

Question 26

Flexor Digitorum Profundus - Insertion

Answer 26

Base of distal phalange of fingers 2-5

Question 27

Flexor Digitorum Profundus - Action

Answer 27

Flexion of fingers (at DIP, PIP, MCP joints)

Question 28

Flexor Digitorum Profundus - Innervation

Answer 28

Median nerve; ulnar nerve

Question 29

Flexor Pollicis Longus - Origin

Answer 29

Radius (middle 1/3 anterior surface) and interosseous membrane

Question 30

Flexor Pollicis Longus - Insertion

Answer 30

Base of distal phalanx of thumb (anterior aspect)

Question 31

Flexor Pollicis Longus - Action

Answer 31

Flexion of thumb (CMC, MCP, IP joints); also crosses wrist joint so weak wrist flexion

Question 32

Flexor Pollicis Longus - Innervation

Answer 32

Median nerve

Question 33

What is the origin of the Abductor Pollicis Longus?

Answer 33

Posterior surfaces of ulna, radius and interosseous membrane (middle 1/3 of forearm)

Question 34

What is the insertion of the Abductor Pollicis Longus?

Answer 34

Base of 1st metacarpal (lateral side)

Question 35

What is the action of the Abductor Pollicis Longus?

Answer 35

Abduction of thumb (CMC joint) ## Footnote Also: radial deviation of wrist, assists with extension and rotation of thumb and flexion/supination of hand at wrist

Question 36

What nerve innervates the Abductor Pollicis Longus?

Answer 36

Radial nerve

Question 37

What clinical test is used for DeQuervain's syndrome?

Answer 37

Finklestein's Test

Question 38

What is the origin of the Extensor Pollicis Brevis?

Answer 38

Posterior distal 1/3 surface of radius & interosseous membrane

Question 39

What is the insertion of the Extensor Pollicis Brevis?

Answer 39

Base of proximal phalanx of thumb

Question 40

What is the action of the Extensor Pollicis Brevis?

Answer 40

Extension of proximal phalanx & 1 metacarpal of thumb ## Footnote Mild radial flexion of wrist

Question 41

What nerve innervates the Extensor Pollicis Brevis?

Answer 41

Radial nerve

Question 42

What is the origin of the Extensor Pollicis Longus?

Answer 42

Posterior middle 1/3 of ulna and interosseous membrane

Question 43

What is the insertion of the Extensor Pollicis Longus?

Answer 43

Distal phalanx of thumb

Question 44

What is the action of the Extensor Pollicis Longus?

Answer 44

Extension of thumb (CMC, MCP, IP joints) ## Footnote Assists in extension and radial flexion of wrist

Question 45

What nerve innervates the Extensor Pollicis Longus?

Answer 45

Radial nerve

Question 46

What is the origin of the Extensor Indicis?

Answer 46

Posterior distal 1/3 of ulna and interosseous membrane

Question 47

What is the insertion of the Extensor Indicis?

Answer 47

Base of middle and distal phalanx of index finger (2nd finger) (via extensor expansion & extensor digitorum muscle tendon)

Question 48

What is the action of the Extensor Indicis?

Answer 48

Extension of index finger (MCP, PIP, DIP) ## Footnote Weak extension of hand and adduction of index finger

Question 49

What nerve innervates the Extensor Indicis?

Answer 49

Radial nerve