Block 1: Practice Exam #3 Flashcards
Inability to flex the interphalangeal joint of the thumb is likely due to injury of which of the following nerves?
A. anterior interosseous
B. median
C. posterior interosseous
D. radial
E. ulnar
anterior interosseous
The nerve supply for the muscle that inserts on to the superior facet of the greater tuberosity of the humerus is:
A. axillary nerve
B. long thoracic nerve
C. lower subscapular nerve
D. musculocutaneous nerve
E. suprascapular nerve
suprascapular nerve
Which of the following is true of the musculocutaneous nerve?
A. it is formed by the roots of the lateral and medial cords
B. it is a continuation of the medial cord
C. it pierces the coracobrachialis muscle
D. it originates distal to the median nerve
E. it is the major motor nerve to the anterior compartment of the forearm
it pierces the coracobrachialis muscle
Which of the following conditions would most likely result in diminished axillary nerve function?
A. a tumor in the triangular space
B. fracture of the anatomic neck of the humerus
C. inferior dislocation of the glenohumeral joint
D. injury to the lateral cord of the brachial plexus
E. knife wound to the biceps muscle
inferior dislocation of the glenohumeral joint
Which of the following muscle - origin relationship(s) is/are correct?
A. coracobrachialis - coracoid process
B. long head of biceps brachii - supraglenoid tubercle
C. long head triceps brachii - infraglenoid tubercle
D. short head of biceps brachii - coracoid process
E. all of the above are correct
all of the above are correct
The conoid tubercle is a feature of which bone?
A. clavicle
B. humerus
C. manubrium of sternum
D. scapula
E. ulna
clavicle
Motor nerves typically enter their target muscles on the muscle’s deep side. Which of the following muscles is an example of the motor nerve entering the muscle on the superficial side?
A. latissimus dorsi
B. pectoralis minor
C. rhomboid major
D. serratus anterior
E. trapezius
serratus anterior
The anatomical neck of the humerus serves as the attachment site for which of the following structures?
A. coracoacromial ligament
B. glenohumeral joint capsule
C. glenoid labrum
D. supraspinatus tendon
E. none of the above attach to the anatomical neck
glenohumeral joint capsule
An injury to which cord of the brachial plexus would most likely cause loss of function of the latissimus dorsi and teres major muscles?
A. medial cord, proximal to the medial brachial cutaneous nerve
B. lateral cord, proximal to the contribution to the median nerve
C. medial cord, distal to the medial pectoral nerve
D. posterior cord, distal to the lower subscapular nerve
E. posterior cord, proximal to the upper subscapular nerve
posterior cord, proximal to the upper subscapular nerve
The medial cord of the brachial plexus contains fibers from which of the following division(s) of the brachial plexus?
A. anterior division of the inferior trunk only
B. anterior division of the middle and inferior trunks
C. anterior divisions of the superior and middle trunks
D. posterior divisions of the middle and inferior trunks
E. posterior division from the inferior trunk only
anterior division of the inferior trunk only
Which of the following does NOT have an attachment (origin or insertion) to the scapula?
A. pectoralis major
B. long head of biceps brachii
C. long head of triceps brachii
D. serratus anterior
E. teres major
pectoralis major
The latissimus dorsi muscle performs all of the following functions EXCEPT:
A. shoulder adduction
B. shoulder extension
C. shoulder external rotation
D. shoulder internal rotation
E. latissimus performs all of the above functions
shoulder external rotation
The nerve supply to the muscle that inserts into the lesser tubercle of the humerus is:
A. axillary nerve
B. lateral pectoral nerve
C. long thoracic nerve
D. thoracodorsal nerve
E. upper and lower subscapular nerves
upper and lower subscapular nerves
Injury to the lateral cord of the brachial plexus would result in substantial impairment of which of the following motions?
A. abduction of the arm at the shoulder
B. extension of the forearm at the elbow
C. extension of the wrist
D. flexion of the forearm at the elbow
E. abduction of the fingers
flexion of the forearm at the elbow
Nerves originating (in whole or part) from the posterior cord of the brachial plexus include all of the following EXCEPT:
A. axillary nerve
B. median nerve
C. radial nerve
D. thoracodorsal nerve
E. upper subscapular nerve
median nerve
The deltoid muscle performs all of the following actions EXCEPT:
A. abduction of the upper extremity
B. adduction of the upper extremity
C. extension of the arm at the glenohumeral joint
D. flexion of the arm at the glenohumeral joint
E. medial (internal) rotation of the arm at the glenohumeral joint
adduction of the upper extremity
All of the following are true of the pectoralis major muscle EXCEPT:
A. it is an important lateral (external) rotator of the humerus
B. its clavicular origin receives innervation from the lateral pectoral nerve
C. it receives blood from pectoral branches of the thoracoacromial trunk
D. it contributes to the anterior wall of the axilla
E. its sternal origin receives motor innervation from fibers which originated in the medial cord of the brachial plexus
it is an important lateral (external) rotator of the humerus
If the axillary artery was ligated (tied or blocked off) just distal to where the lateral thoracic artery normally comes off, which of the following muscles would NOT receive its primary blood supply?
A. levator scapulae
B. pectoralis major
C. pectoralis minor
D. teres major
E. trapezius
teres major
Injury to the medial cord of the brachial plexus would affect all of the following muscles EXCEPT:
A. adductor pollicis
B. deltoid
C. flexor carpi radialis
D. flexor carpi ulnaris
E. pectoralis major
deltoid
All of the following are true of the serratus anterior muscle EXCEPT:
A. it acts to protract the scapula and hold it against the thoracic wall
B. it attaches to the subscapular fossa
C. it is innervated by the long thoracic nerve
D. loss of its nerve supply results in “winged scapula”
E. the lateral thoracic artery is its primary blood supply
it attaches to the subscapular fossa
Of the muscles of the upper extremity which have attachment (origin or insertion) to the scapula, the one which is NOT innervated by a branch of the brachial plexus is the:
A. levator scapulae
B. serratus anterior
C. supraspinatus
D. teres major
E. trapezius
trapezius
Injury to the proximal portion of the superior trunk of the brachial plexus is obvious when the patient shows which of the following on physical exam?
A. inability to laterally (externally) rotate the arm
B. loss of sensation in the dorsum of the hand
C. paralyses of intrinsic muscles of the hand
D. paresthesia in the medial aspect of the arm
E. winged scapula
inability to laterally (externally) rotate the arm
The nerve supply for the muscle that inserts into the entire medial (vertebral) border of the scapula (anterior surface) is:
A. axillary nerve
B. dorsal scapular nerve
C. long thoracic nerve
D. suprascapular nerve
E. thoracodorsal nerve
long thoracic nerve
The primary restraint to anterior translation of the humeral head when the glenohumeral joint is abducted to 45 degrees is which of the following?
A. anterior band of the inferior glenohumeral ligament
B. axillary recess
C. middle glenohumeral ligament
D. posterior band of inferior glenohumeral ligament
E. superior glenohumeral ligament
middle glenohumeral ligament
A man was stabbed in the triangular space during a knife fight sustaining arterial damage. Which of the following arteries anastamoses with the damaged artery to supply blood to the scapular region?
A. dorsal scapular artery
B. profunda brachii artery
C. muscular branch of the axillary artery
D. anterior humeral circumflex artery
E. brachial artery
dorsal scapular artery
A man was stabbed in the triangular space during a knife fight sustaining arterial damage. Which of the following arteries anastamoses with the damaged artery to supply blood to the scapular region?
A. dorsal scapular artery
B. profunda brachii artery
C. muscular branch of the axillary artery
D. anterior humeral circumflex artery
E. brachial artery
dorsal scapular artery
Which tendon would most likely be affected if a patient has a narrow subacromial space?
A. infraspinatus
B. supraspinatus
C. teres major
D. teres minor
E. trapezius
supraspinatus
Which of the following structures is/are commonly found in the triangular hiatus (interval)?
A. axillary nerve
B. circumflex scapular artery
C. posterior circumflex humeral artery
D. profunda brachii artery
E. both A &C
profunda brachii artery
Fracture of the mid-shaft of the humerus leading to nerve damage may result in which of the following pathological conditions?
A. inability to abduct the glenohumeral joint
B. inability to extend the wrist
C. inability to flex the elbow
D. inability to flex the wrist
E. inability to flex the fingers
inability to extend the wrist
All of the following are true of the profunda (deep) brachial artery EXCEPT:
A. It runs with the ulnar nerve in the arm
B. its branches anastomose at the elbow with branches of the radial artery
C. is the first major branch of the brachial artery
D. it may be located between the long and lateral heads of triceps brachii
E. it provides major blood supply for the posterior compartment of the arm
It runs with the ulnar nerve in the arm
Of the following structures, which may be found in the intertubercular (bicipital) groove?
A. tendon of biceps femoris
B. tendon of coracobrachialis
C. tendon of short head of biceps
D. tendon of long head of biceps
E. tendon of lateral biceps
tendon of lateral biceps
The nerve supply for the muscle that has its origin from the coracoid process and inserts on the medial surface of the mid shaft of the humerus is:
A. axillary nerve
B. median nerve
C. musculocutaneous nerve
D. radial nerve
E. ulnar nerve
musculocutaneous nerve
A complete avulsion of the radial tuberosity would result in dysfunction of Which of the following muscles?
A. biceps brachii
B. brachialis
C. brachioradialis
D. pronator teres
E. supinator
biceps brachii
Which of the following muscles does NOT have an attachment (origin or insertion) to the humerus?
A. biceps brachii
B. brachialis
C. coracobrachialis
D. extensor carpi radialis longus
E. pectoralis major
biceps brachii
The nerve supply for the muscle that inserts into the ulnar tuberosity is:
A. axillary
B. median
C. musculocutaneous
D. posterior interosseous
E. radial
musculocutaneous
Which of the following relationships is true of the structures crossing the cubital fossa?
A. The brachial artery lies lateral to the biceps tendon.
B. The median nerve lies between the brachial artery and the biceps tendon.
C. The median nerve lies medial to the brachial artery.
D. The musculocutaneous nerve crosses the fossa just medial to the biceps tendon.
E. The radial nerve lies medial to the brachial artery.
The median nerve lies medial to the brachial artery
Which of the following nerves would be most at risk of injury if the medial epicondyle of the humerus was fractured?
A. anterior interosseous
B. median
C. posterior interosseous
D. ulnar
E. radial
ulnar
Which of the following is primarily responsible for retaining the head of the radius in contact with the radial notch of the ulna?
A. annular ligament
B. bicipital aponeurosis
C. interosseous membrane
D. transverse humeral ligament
E. ulnar collateral ligament
annular ligament
The primary restraint to valgus force at the elbow is from which of the following ligaments?
A. annular ring
B. interosseous membrane
C. lateral (radial) collateral ligament
D. lateral ulnar collateral ligament
E. medial (ulnar) collateral ligament
medial (ulnar) collateral ligament
A young man presents to the emergency department after a knife fight. He has an injury to the proximal cubital fossa medial to the biceps tendon. Which of the following arteries is most likely to be damaged?
A. Axillary artery
B. Brachial artery
C. Deep (profunda) brachial artery
D. Radial artery
E. Anterior interosseous
Brachial artery
Which of the following muscles takes origin, at least in part, from the medial epicondyle of the humerus?
A. biceps brachii muscle
B. extensor carpi radialis muscle
C. extensor carpi ulnaris muscle
D. pronator teres muscle
E. supinator muscle
pronator teres muscle
Which of the following nerves is most likely to be excessively compressed in a pronator teres syndrome?
A. deep branch of radial nerve
B. deep branch of the ulnar nerve
C. median nerve
D. musculocutaneous nerve
E. posterior interosseous nerve
median nerve
The nerve supply for the extensor carpi radialis longus muscle is:
A. anterior interosseous nerve
B. median nerve
C. posterior interosseous nerve
D. radial nerve
E. ulnar nerve
radial nerve
All of the following muscles have an origin (whole or in part) from the radius EXCEPT:
A. abductor pollicis longus
B. extensor pollicis brevis
C. extensor pollicis longus
D. flexor digitorum superficialis
E. flexor pollicis longus
extensor pollicis longus
All of the following bony features are located on the ulna EXCEPT:
A. coronoid process
B. olecranon process
C. radial notch
D. ulnar notch
E. ulnar tuberosity
ulnar notch
A muscle which acts to flex the elbow joint but has the same general innervation as the extensor group of muscles of the forearm is:
A. abductor pollicis longus
B. biceps brachii
C. brachioradialis
D. pronator teres
E. supinator
brachioradialis
The inability to extend the elbow or wrist would indicate damage to Which of the following structures?
A. anterior divisions of the brachial plexus
B. axillary nerve
C. median nerve
D. musculocutaneous nerve
E. posterior cord of the brachial plexus
posterior cord of the brachial plexus
Which of the following is true of the brachioradialis muscle?
A. It extends the forearm at the elbow.
B. It flexes the forearm at the elbow.
C. It is innervated by the median nerve.
D. It is innervated by the ulnar nerve.
E. It is innervated by the musculocutaneous nerve.
It flexes the forearm at the elbow
The inability to oppose the thumb to the other digits is most likely a result of damage to which of the following?
A. deep branch of the ulnar nerve
B. first digital branch of the median nerve
C. recurrent branch of the median nerve
D. tendon of the adductor pollicis muscle
E. tendon of the first lumbrical muscle
recurrent branch of the median nerve
Which of the following would NOT be associated with a complete severance of the ulnar nerve at the wrist?
A. inability to flex the little finger
B. inability to abduct the little finger
C. inability to flex the metacarpophalangeal joint while extending the interphalangeal joints of the 3rd digit
D. inability to grasp a piece of paper between the extended 4th and 5th digits
E. loss of all sensation on the palmer aspect of the little finger
inability to flex the metacarpophalangeal joint while extending the interphalangeal joints of the 3rd digit
Which of the following relationships at the wrist is INCORRECT?
A. The median nerve lies deep to the tendon of palmaris longus.
B. The radial artery can be compressed against the radius.
C. The radial artery lies medial to the tendon of flexor carpi radialis.
D. The scaphoid can be palpated in the floor of the anatomical snuff box.
E. The ulnar artery and nerve lie lateral to the tendon of flexor carpi ulnaris
The radial artery lies medial to the tendon of flexor carpi radialis
Which of the following is true of the interosseous muscles?
A. all of the interosseous muscles are innervated by the deep branch of the ulnar nerve
B. the dorsal interossei muscles adduct the fingers
C. the palmar interossei muscles abduct the fingers
D. the third digit has 2 palmar and no dorsal interossei muscles attaching to it
E. the fourth digit has no palmar and 2 dorsal interossei muscles attaching to it
all of the interosseous muscles are innervated by the deep branch of the ulnar nerve
Based on the information related to dermatomes and peripheral nerve innervation discussed in class, which of the following dermatomes (root levels) and cutaneous nerves supplies the palmar skin of the radial side of the 4th digit?
A. C7 via the Median Nerve
B. C8 via the Median Nerve
C. C7 via the Ulnar Nerve
D. C8 via the Ulnar Nerve
E. T1 via the Ulnar Nerve
C8 via the Median Nerve
All of the following muscles are innervated by the median nerve or a branch of the median nerve EXCEPT:
A. abductor pollicis brevis
B. adductor pollicis
C. flexor pollicis longus
D. opponens pollicis
E. second lumbrical
adductor pollicis
Fracture of the hook of the hamate bone would disrupt the origin of which of the following muscles?
A. abductor digiti minimi
B. extensor digiti minimi
C. flexor digiti minimi
D. flexor pollicis brevis
E. opponens pollicis
flexor digiti minimi
The muscle that inserts into the lateral side of the 1st metacarpal is:
A. adductor pollicis
B. extensor pollicis brevis
C. extensor pollicis longus
D. flexor pollicis brevis
E. opponens pollicis
opponens pollicis
Which of the following tendons pass through the carpal tunnel?
A. flexor carpi radialis
B. flexor digitorum superficialis
C. flexor pollicis longus
D. both A & B
E. both B & C
both B & C
Muscles which insert into the extensor hoods (dorsal digital expansions) of the fingers include all of the following EXCEPT:
A. dorsal interossei
B. extensor digitorum tendons
C. lumbricals
D. opponens digiti minimi
E. palmar interossei
opponens digiti minimi
The nerve supply for the muscle that inserts into the palmar aspect of the base of the distal phalanx of the thumb is:
A. anterior interosseous nerve
B. median nerve
C. posterior interosseous nerve
D. radial nerve
E. ulnar nerve
anterior interosseous nerve
A butcher is brought to the emergency department after accidentally cutting her lateral, volar wrist. She presents with a shallow cut, superficial to the flexor retinaculum. Which of the following muscle tendons is most likely to be severed?
A. flexor carpi ulnaris
B. flexor carpi radialis
C. flexor digitorum profundus
D. flexor digitorum superficialis
E. flexor pollicis longus
flexor carpi radialis
Pain and swelling in the anatomical snuff box may indicate a fracture to which of the following bones?
A. lunate
B. radius
C. scaphoid
D. trapezium
E. trapezoid
scaphoid
Which of the following statements concerning joints of the upper extremity is TRUE?
A. Rupture of the coracoclavicular ligaments
would result in a dislocation of the sternoclavicular joint.
B. The carpometacarpal joint of the thumb is a plane type of synovial joint.
C. The major weight bearing bone at the elbow is the radius.
D. The radiocarpal joint is capable only of flexion and extension movements.
E. The trochlea of the humerus articulates with its named notch on the ulna.
The trochlea of the humerus articulates with its named notch on the ulna
Which of the following is true?
A. Mallet finger occurs when the long finger extensor tendon is avulsed from the base of the distal phalanx.
B. Swan Neck deformity occurs when the dorsal plates are damaged.
C. Boutenierre deformity occurs when the volar plates are damaged.
D. Claw hand occurs as a result of damage to the median nerve.
E. Trigger finger occurs as a result of damage to the ulnar nerve.
Mallet finger occurs when the long finger extensor tendon is avulsed from the base of the distal phalanx
During a posterior elbow dislocation the coronoid process is often fractured. Fracture of the coronoid process may result in disruption of all of the following structures EXCEPT:
A. anterior band of ulnar collateral ligament
B. flexor digitorum superficialis muscle
C. pronator teres muscle
D. supinator muscle
E. transverse band of ulnar collateral ligament
supinator muscle
Which of the following cutaneous nerves innervates the dorsal aspect of the first web space between thumb and index finger?
A. lateral brachial cutaneous nerve
B. medial antebrachial cutaneous nerve
C. superficial radial nerve
D. median nerve
E. ulnar nerve
superficial radial nerve
Which of the following cutaneous nerves innervates the lateral shoulder?
A. superior lateral brachial cutaneous nerve
B. medial antebrachial cutaneous nerve
C. superficial radial nerve
D. median nerve
E. ulnar nerve
superior lateral brachial cutaneous nerve
Which of the following cutaneous nerves innervates the tip of the third digit (middle finger)?
A. lateral brachial cutaneous nerve
B. medial antebrachial cutaneous nerve
C. superficial radial nerve
D. median nerve
E. ulnar nerve
median nerve
Which of the following cutaneous nerves innervates the medial forearm?
A. lateral brachial cutaneous nerve
B. medial antebrachial cutaneous nerve
C. superficial radial nerve
D. median nerve
E. ulnar nerve
medial antebrachial cutaneous nerve
Which of the following cutaneous nerves innervates the medial half of the 4th digit?
A. lateral brachial cutaneous nerve
B. medial antebrachial cutaneous nerve
C. superficial radial nerve
D. median nerve
E. ulnar nerve
ulnar nerve
Which of the following cutaneous nerves innervates the palmar side of the index and middle fingers?
A. lateral brachial cutaneous nerve
B. medial antebrachial cutaneous nerve
C. superficial radial nerve
D. median nerve
E. ulnar nerve
median nerve
Which of the following cutaneous nerves innervates the dorsum of the hand over the 4th and 5th metacarpals?
A. lateral brachial cutaneous nerve
B. medial antebrachial cutaneous nerve
C. superficial radial nerve
D. median nerve
E. ulnar nerve
ulnar nerve
Which of the following arteries anastomoses with the radial recurrent artery?
A. Middle collateral artery
B. Superior ulnar collateral artery
C. Radial collateral artery
D. Posterior ulnar recurrent artery
E. Inferior ulnar collateral artery
Radial collateral artery
Which of the following arteries anastomoses with the anterior ulnar recurrent artery?
A. Middle collateral artery
B. Superior ulnar collateral artery
C. Radial collateral artery
D. Posterior ulnar recurrent artery
E. Inferior ulnar collateral artery
Inferior ulnar collateral artery
Which of the following arteries anastomoses with the recurrent interosseous artery?
A. Middle collateral artery
B. Superior ulnar collateral artery
C. Radial collateral artery
D. Posterior ulnar recurrent artery
E. Inferior ulnar collateral artery
Middle collateral artery
Which of the following arteries anastomoses with the superficial palmar branch of the radial artery?
A. Princeps Pollicis artery
B. Deep palmar arch
C. Radialis Indicis artery
D. Radial collateral artery
E. Superficial palmar arch
Superficial palmar arch
Which of the following arteries anastomoses with the deep branch of the ulnar artery?
A. Princeps Pollicis artery
B. Deep palmar arch
C. Radialis Indicis artery
D. Radial collateral artery
E. Superficial palmar arch
Deep palmar arch
