Online Quiz (MCQs) on the anatomy of the forearm

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Created on September 04, 2022 By

Prof Kehinde Oluwadiya

Forearm

Forearm Quiz

1 / 21

Category: Forearm

1. Which muscle does not arise from the common extensor origin?

1. extensor carpi radialis brevis

2. extensor digitorum

3. extensor digiti minimi

4. extensor carpi radialis longus

5. extensor carpi ulnaris

2 / 21

Category: Forearm

2. Extensor pollicis longus muscle:

1. arises from the radius

2. extends the metacarpophalangeal joint of the thumb

3. is supplied by the arterial interosseous nerve

4. hooks around the dorsal tubercle of the radius (Lister’s tubercle)

5. arises proximal to the abductor pollicis longus

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Category: Forearm

3. Which muscle arises from both the radius and ulna:

1. extensor pollicis longus

2. extensor pollicis brevis

3. abductor pollicis longus

4. extensor indicis

5. extensor digitorum

4 / 21

Category: Forearm

4. Which of the following is CORRECT concerning flexor digitorum profundus?

1. it arises from both radius and ulna

2. is innervated by both median and ulnar nerves

3. the origins of the lumbricals arise from its tendons

4. it flexes the terminal phalangeal joints

5 / 21

Category: Forearm

5. Which of the following is true about flexor digitorum superficialis?

1. origin forms upper limit of the space of parona

2. all four tendons lie on the same plane under flexor retinaculum

3. is innervated by median and ulnar nerves

4. tendon to index finger separates before other three tendons high in forearm

5. median nerve passes between its two heads

6 / 21

Category: Forearm

6. Which muscle arises from both ulnar and radius?

1. pronator teres

2. flexor carpi radialis

3. flexor digitorum superficialis

4. flexor digitorum profundus

5. flexor pollicis longus

7 / 21

Category: Forearm

7. Which of the following IS NOT true about pronator teres?

1. flexor digitorum superficialis

2. ulnar artery

3. flexor digitorum profundus

4. median nerve

5. flexor pollicis longus

8 / 21

Category: Forearm

8. Regarding flexor digitorum profundus, which is NOT TRUE?

1. is the most powerful and bulky muscle of the forearm

2. arises from the common flexor origin

3. the tendon for the index separates in the forearm from the three other tendons

4. it gives rise to origin of four lumbricals

5. it is supplied by the anterior interosseous nerve and the ulnar nerve in a variable distribution

9 / 21

Category: Forearm

9. Extensor pollicis longus – which is INCORRECT?

1. origin = ulnar just distal to adductor pollicis longus

2. insertion = base of first distal phalanx

3. tendon hooks around Lister’s tubercle (radius)

4. forms radial boundary of snuffbox

5. nerve supply – posterior interosseous nerve (C7, 8)

10 / 21

Category: Forearm

10. Which of the following muscles arises, in part, from the radial collateral ligament of the elbow joint?

1. extensor carpi radialis brevis

2. supinator

3. extensor digiti minimi

4. extensor carpi ulnaris

5. extensor digitorum

11 / 21

Category: Forearm

11. Paralysis of which nerve results in inability to initiate abduction of the arm?

1. the axillary nerve

2. the suprascapular nerve

3. the subscapular nerve

4. the dorsal scapular nerve

5. the thoracodorsal nerve

12 / 21

Category: Forearm

12. Which is NOT an origin of supinator

1. radial tuberosity

2. radial collateral ligament

3. lateral epicondyle of humerus

4. supinator crest of ulnar

5. aponeurosis overlying supinator muscle

13 / 21

Category: Forearm

13. Which of the following is CORRECT about flexor carpi radialis?

1. tendon receives muscle fibres down to just above the wrist

2. tendon lies in a groove on the trapezoid

3. arises lateral to flexor digitorum superficialis

4. has median nerve ‘plastered’ to deep surface

5. tendon pierces flexor retinaculum

14 / 21

Category: Forearm

14. The following are true about flexor carpi radialis EXCEPT:

1. it arises from the common flexor origin at the humerus

2. it has its own compartment in the flexor retinaculum

3. the radial artery lies laterally to it at the wrist

4. flexor pollicis longus lies medially

5. it is supplied by the median nerve

15 / 21

Category: Forearm

15. Which of the following lies immediately medial to the tubercle of the radius (Lister’s tubercle)?

1. extensor carpi ulnaris

2. extensor carpi radialis

3. extensor pollicis longus

4. extensor pollicis brevis

5. extensor digitorum

16 / 21

Category: Forearm

16. The order of tendons in the extensor compartment of the distal forearm from radial to ulnar sides is:

1. ECRB; ECRL; EPL; ED; FCU; ECU; EI

2. ECRB; ECRL; EPL; ED; ECU; FCU; EI

3. ECRL; ECRB; EPL; ED; ECU; EI; FCU

4. ECRL; ECRB; EPL; ED & EI; ECU; FCU

5. ECRB; ECRL; EPL; ECU; FCU; ED & EI

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Category: Forearm

17. In the forearm:

1. the brachial artery lies medial to the median nerve in the cubital fossa

2. the radial artery lies lateral to the radial nerve in the middle third

3. the anterior interosseous nerve arises from the radial nerve

4. the median nerve passes between the two heads of flexor carpi ulnaris

5. the posterior interosseous nerve passes between the two layers of the supinator

18 / 21

Category: Forearm

18. All the following arise from the common extensor origin

1. extensor carpi radialis brevis

2. extensor carpi radialis longus

3. extensor digitorum

4. extensor digitorum minimi

5. None of the above

19 / 21

Category: Forearm

19. Simple pronation:

1. requires an intact radial nerve

2. requires an intact C8 nerve root

3. occurs without movement of the ulna

4. occurs about an axis which runs along the shaft of the radius

5. requires the action of anconeus

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Category: Forearm

20. In the forearm:

1. the median nerve passes between the two heads of pronator teres

2. the ulnar nerve lies deep to flexor digitorum profundus

3. superficial fibres of flexor digitorum superficialis gives rise to the tendons for index and middle fingers

4. the radial artery is on the lateral side of the radial nerve

5. the fibres of the interosseous membrane run obliquely down from ulna to radius

21 / 21

Category: Forearm

21. Which of the following muscles DOES NOT arise from the common extensor origin?

1. extensor carpi radialis brevis

2. extensor digitorum comminus

3. extensor carpi radialis longus

4. extensor digiti minimi

5. extensor carpi ulnaris

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Online Quiz: The Arm

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