Online quiz on the anatomy of the human axilla

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Created on September 04, 2022 By

Prof Kehinde Oluwadiya

Axilla

Axilla Quiz

1 / 19

Category: Axilla

1. Damage to the median nerve may be suggested clinically by:

1. a wasting of the interossei

2. pointing index finger

3. ‘claw hand’

4. sensory loss over ulnar side of hand

5. inability to abduct the index finger

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Category: Axilla

2. The radial nerve:

1. supplies extensors to the elbow

2. pierces the medial intermuscular septum of the mid arm

3. supplies extensor carpi ulnaris

4. runs on the lateral side of the radial artery in the forearm

5. runs in the cubital fossa

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Category: Axilla

3. The venous systems that contribute least to venous drainage of the forearm is:

1. the basilic vein

2. the cephalic vein

3. the deep veins which are often duplicate

4. the carpal rete

5. the median cubital

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Category: Axilla

4. Which lymph nodes drain the ulnar side of the forearm?

1. infratrochlear

2. supratrochlear

3. infraclavicular

4. anterior axillary

5. ulnar trochlear

5 / 19

Category: Axilla

5. A high ulnar nerve injury might produce:

1. weakness of elbow flexion

2. a ‘claw hand’

3. weak abduction of the index finger

4. triceps paralysis

5. sensory loss over the radial three fingers

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Category: Axilla

6. Axillary artery:

1. becomes brachial artery at lower border teres minor

2. axillary vein lies laterally to the artery

3. is divided into three parts by pectoralis minor

4. second part is clasped by the two heads of median nerve

5. gives off the superior thoracic artery from its second part

7 / 19

Category: Axilla

7. The first part of the subclavian artery:

1. usually gives off no branches

2. lies behind the anterior scalene muscle

3. makes a groove in the dome of the pleura

4. is encircled by the ansa cervicalis

5. on the left lies anterior to the common carotid artery

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Category: Axilla

8. Regarding the axilla:

1. the posterior wall consists of subscapularis and teres minor

2. the medial wall is formed by serratus anterior down to the 6th intercostal space

3. the apex communicates directly with the posterior triangle of the neck

4. coracobrachialis forms part of the anterior wall

5. the axillary artery is generally described as having eight branches

9 / 19

Category: Axilla

9. The radial nerve gives rise to all the following except the:

1. posterior cutaneous nerve of the arm

2. lower lateral cutaneous nerve of the arm

3. posterior cutaneous nerve of the forearm

4. posterior interosseous nerve

5. medial cutaneous nerve of the arm

10 / 19

Category: Axilla

10. The axilla:

1. communicates with the anterior triangle of the neck

2. contains lymph nodes draining the upper limb and lateral chest wall

3. has an anterior wall made up by the serratus anterior muscle

4. has an apex bounded by the humerus, clavicle and scapula

5. has no medial wall

11 / 19

Category: Axilla

11. Regarding the brachial plexus, which is INCORRECT?

1. it is derived from the anterior rami of C5-T1 after they have given off segmental supply to the prevertebral and scalene muscles

2. the roots give off three branches including the long thoracic nerve to latissimus dorsi

3. the trunks give off one branch

4. the cords are divided into anterior and posterior divisions that supply the flexor and extensor compartments respectively and give off 13 branches

5. the lateral cord supplies part of the median nerve

12 / 19

Category: Axilla

12. The radial artery:

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

13 / 19

Category: Axilla

13. Which of the following is CORRECT?

1. the suprascapular nerve arises from the posterior aspect of C5

2. the five roots emerge between scalenus anterior and scalenus medius to form the trunks

3. the thoracodorsal nerve arises from the posterior aspect of C5

4. the axillary nerve passes through the triangular space to lie in contact with the surgical neck of humerus

5. the median nerve is the largest branch of the whole plexus

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Category: Axilla

14. Branches of the axillary artery DO NOT include:

1. superior thoracic

2. subscapular

3. medial thoracic

4. thoracoacromial

5. posterior circumflex humeral

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Category: Axilla

15. Which of the following is correct with regards to teres major:

1. is separated from subscapularis by the quadrangular space in the posterior wall of the axilla

2. is supplied by the lateral subscapular nerve

3. inserts into the lateral lip of the intertubecular groove of the humerus

4. acting alone, it abducts and medially rotates the humerus at the shoulder joint

5. None of the above

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Category: Axilla

16. The largest branch of the axillary artery is:

1. superior thoracic artery

2. thoracoacromial artery

3. lateral thoracic artery

4. subscapular artery

5. posterior circumflex humeral artery

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Category: Axilla

17. With respect to the axilla:

1. the thoracodorsal nerve runs posterior to the mid axillary line on serratus anterior, which it supplies

2. the axillary artery is divided into three parts by scalenus anterior

3. the lateral wall is made up of latissimus dorsi tendon, subscapularis, teres major

4. the lateral thoracic vein is connected by the thoracoepigastric vein to the superficial epigastric vein, therefore bypassing the IVC in its obstruction

5. the axillary vein commences at the upper border of teres major as a continuation of the basilic vein

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Category: Axilla

18. Which lymphatics do not drain the breast?

1. subscapular nodes

2. infraclavicular nodes

3. lateral axillary nodes

4. parasternal nodes

5. pectoral nodes

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Category: Axilla

19. Radial nerve:

1. is the largest branch of the brachial plexus

2. occupies the length of the spiral groove

3. damage causes inability to extend the wrist and the interphalangeal joints

4. damage causes sensory loss to the palm

5. arises from the lateral cord of the brachial plexus

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Online Quiz: The Axilla

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