Muscles of the Wrist and Fingers

Question 1

Flexor Carpi Radialis

Answer 1

Origin
- Medial Epicondyle of Humerus

Insertion
- Metacarpals 2-3

Actions
- Flexion (Wrist - A)

Question 2

Flexor Carpi Ulnaris

Answer 2

Origin
- Medial Epicondyle of Humerus

Insertion
- Metacarpal 5

Actions
- Flexion (Wrist - A)

Question 3

Flexor Digitorum Superficialis

Answer 3

Origin
- Medial Epicondyle of Humerus

Insertion
- Phalanges 2-5

Actions

• Flexion (Wrist - A)
• Flexion (Fingers - A)

Question 4

Flexor Pollicus Longus

Answer 4

Origin
- Shaft of ulna

Insertion
- Phalange 1 (pollex)

Actions
- Flexion (Fingers)

Question 5

Extensor Carpi Radialis

Answer 5

Origin
- Lateral Epicondyle of humerus

Insertion
- Metacarpals 2-3

Actions
- Extension (Wrist)

Question 6

Extensor Carpi Ulnaris

Answer 6

Origin
- Lateral Epicondyle of Humerus

Insertion
- Metacarpal 5

Actions
- Extension (Wrist - A)

Question 7

Extensor Pollicus Longus

Answer 7

Origin
- Shaft of Radius

Insertions
- Phalange 1 (Pollex)

Actions
- Extension (Fingers)

Question 8

Extensor Digitorum

Answer 8

Origin
- Lateral epicondyle of humerus

Insertion
- Phalanges 2-5

Actions

• Extension (wrist)
• Extension (fingers)