Wrist/Hand

Question 1

Flexor Carpi Radialis

Answer 1

Group:
- Wrist Flexors

Origin:
- medial Epicondyle of the Humerus via the common flexor tendon
Insertion:
- bases of metacarpals II and III
Actions:
- flexes wrist
- abducts wrist
- flexes elbow

Question 2

Abductor Pollicis Longus

Answer 2

Group:
- Deep Distal 4
- Snuff Box
- Long Muscles/Tendinous - Originates along shafts of Radius/Ulna

Origin:
- Anterior Radial Shaft (middle)
- Interosseus membrane
Insertion:
- Lateral metacarpal of thumb (I)
Actions:
- Abduct thumb
- Extends thumb
- Lateral rotation of thumb
- Abducts hand at wrist
- Flexes hand at wrist
- Supinates the forearm

Question 3

Flexor Carpi Ulnaris

Answer 3

Group:
- Wrist Flexor

Origin:
- medial epicondyle of the humerus via the common flexor tendon
- medial olecranon
- posterior proximal 2/3 of the ulna
Insertion:
- base of the metacarpal V
- pisiform
- hook of the Hamate
Actions:
- flexes the wrist
- Adducts the wrist

Question 4

Palmaris Longus

Answer 4

Groups:
- Wrist Flexor

Origin:
- medial epicondyle of the humerus via the common flexor tendon
- anterior proximal radial shaft
- Coronoid process of the Ulna
Insertion:
- palmar aponeurosis
Actions:
- flexes the wrist
- cups (tenses) the palm

Question 5

Flexor Digitorum Superficialis

Answer 5

Group:
- Finger Flexor

Origin:
- Medial Epicondyle of the humerus via the common flexor tendon
- Anterior proximal radial shaft
- Coronoid process of the ulna
Insertion:
- middle phalanges of the digits II-V
Action:
- flexes the wrist
- flexes the fingers at PIP and MIP

Question 6

Flexor Digitorum Profundis

Answer 6

Group:
- Finger Flexor

Origin:
- anterior proximal 3/4 of the anterior ulnar shaft
- interosseous membrane
Insertion:
- digital phalanges of the digits II-V
Action:
- flexes the wrist
- flexes the fingers at the DIP, PIP, and MIP

Question 7

Extensor Carpi Radialis Longus

Answer 7

Group:
- Wrist Extensor

Origin:
- Lateral Epicondyle of the humerus via the common extensor tendon
Insertion:
- Posterior base of metacarpal II
Action:
- Extends the wrist
- Abducts the wrist

Question 8

Extensor Capri Radialis Brevis

Answer 8

Group:

Origin:
Insertion:
Action:

Question 9

Extensor Carpi Ulnaris

Answer 9

Group:

Origin:
Insertion:
Action:

Question 10

Extensor Digitorum

Answer 10

Group:

Origin:
Insertion:
Action:

Question 11

Extensor Digiti Minimi

Answer 11

Group:

Origin:
Insertion:
Action:

Question 12

Abductor Pollicis Brevis

Answer 12

Group:

Origin:
Insertion:
Action:

Question 13

Flexor Pollicis Brevis

Answer 13

Group:

Origin:
Insertion:
Action:

Question 14

Opponents Pollicis

Answer 14

Group:

Origin:
Insertion:
Action:

Question 15

Abductor Pollicis

Answer 15

Group:

Origin:
Insertion:
Action:

Question 16

Flexor Pollicis Longus

Answer 16

Group:

Origin:
Insertion:
Action:

Question 17

Extensor Pollicis Brevis

Answer 17

Group:

Origin:
Insertion:
Action:

Question 18

Extensor Pollicis Longus

Answer 18

Group:

Origin:
Insertion:
Action:

Question 19

Extensor Indicis

Answer 19

Group:

Origin:
Insertion:
Action:

Question 20

Lumbricals Manus

Answer 20

Group:

Origin:
Insertion:
Action:

Question 21

Palmar Interossei

Answer 21

Group:

Origin:
Insertion:
Action:

Question 22

Dorsal Interossei Manus

Answer 22

Group:

Origin:
Insertion:
Action:

Question 23

Abductor Digiti Minimi Manus

Answer 23

Group:

Origin:
Insertion:
Action:

Question 24

Flexor Digiti Minimi Manus

Answer 24

Group:

Origin:
Insertion:
Action:

Question 25

Opponents Digiti Minimi

Answer 25

**Group:** **Origin:** **Insertion:** **Action:**

Question 26

Palmaris Brevis

Answer 26

**Group:** **Origin:** **Insertion:** **Action:**

Question 27

Wrist Flexors

Answer 27

- Flexor Carpi Radialis - Flexor Carpi Ulnaris - Palmaris Longus

Question 28

Finger Flexors

Answer 28

- Flexor Digitorum Superficialis - Flexor Digitorum Profundis

Question 29

Wrist Extensors

Answer 29

- Extensor Carpi Radialis Longus - Extensor Carpi Radialis Brevis - Extensor Carpi Ulnaris

Question 30

Finger Extensor

Answer 30

- Extensor Digitorum - Extensor Digiti Minimi

Question 31

Superficial Extensor Group Muscles

Answer 31

- Brachioradialis - Extensor Carpi Radialis Brevis - Extensor Carpi Radialis Longus - Extensor Carpi Ulnaris - Extensor Digitorum - Extensor Digiti Minimi - Anconeus

Question 32

Short Muscle/Thenar Eminence Group

Answer 32

- Abductor Pollicis Brevis - Flexor Pollicis Brevis - Opponens Pollicis - Adductor Pollicis

Question 33

Long Muscles/Tendinous Group (Originates along the shaft of the Radius or Ulna

Answer 33

- ** Flexor Pollicis Longus** (Radial shaft): Flexes thumb - **Abductor Pollicis Longus** (Ulnar shaft): Abducts the thumb - ** Extensor Pollicis Brevis** (Radial shaft): Extends the thumb - Extensor` Pollicis Longus (Ulnar shaft) - Extensor Indicis (Ulnar shaft)

Question 34

Deep Distal 4

Answer 34

- **Abductor Pollicis Longus**: Abducts the thumb - ** Extensor Pollicis Brevis**: Extends the thumb - ** Extensor Pollicis Longus**: Extends the thumb - ** Extensor Indicis**: Extends index finger

Question 35

Snuff Box Group

Answer 35

- Abductor Pollicis Longus: Abducts the thumb - Extensor Pollicis Brevis: Extends the thumb - Extensor Pollicis Longus: Extends the thumb

Question 36

Central Compartment/Lumbricals and Interossei Group

Answer 36

- Lumbricals Manus: Extends/Flexes all but thumb - Palmar Interossei: Extends/Flexes/Adducts all but thumb - Dorsal Interossei Manus: Extends/Flexes/Adducts all but thumb