Advanced Anatomy- Quiz 5

A man injured his wrist on broken glass. Which structures entering the palm superficial to the flexor retinaculum might have been damaged? a. Ulnar artery and ulnar n b. Ulnar n and flexor digitorum superficialis c. Median n and flexor pollicis longus d. Ulnar n and median n

a

A person carrying a soft drink slipped on some ice breaking the bottle in their right hand. a shard of glass entered the hand severing all tissue from the skin down to the metacarpal. The cut extended on the lateral side of the index finger, following the proximal transverse crease, clear to the proximal portion of the head of the second metacarpal bone. It did not extend over the third metacarpal. The clinical manifestations were as follows: the subject could not flex any part of the index finger. The subject had trouble abducting an adducting the index finger. The subject had total anesthesia on the palmar side of the index finger and the dorsal side of the distal part of the same digit. There was considerable bleeding from severed vessels. Repair proceeded requiring six hours of surgery. Which of the following n was most likely cut? a. Common palmar digital branches of the median n b. Deep branch of the ulanr n c. Dorsal digital branch of the radial n d. Motor branch of the median n

a

A woman riding a mountain bike on a rough trail hit a rut and was thrown from the bike. Her upper arm hit a tree, fracturing the humerus just above the insertion of the teres major m. later, after the fracture healed, it was noted the she cannot extend her forearm at eh elbow or her hand at the wrist. Which n must have been injured? a. Radial b. Median c. Ulnar d. Axillary

a

In order to check the pulse of a child whose forearm is in a brace, the therapist presses her finger into the depth of the anatomical snuffbox. The tendon lying immediately medial (ulnar) to the therapist's finger belongs to the a. Extensor pollicis longus b. Extensor carpi radialis bravis c. Extensor carpi radialis longus d. Extensor pollicis brevis

a

Structures within the carpal tunnel include: a. Radial bursa b. Ulnar nerve c. Palmar aponeurosis d. Adductor pollicis muscles

a

The extensor carpi radialis brevis attaches distally at ____ a. The base of the third metacarpal b. The lateral supracondylar ridge c. The lateral epicondyle d. The medial epicondyle

a

The interosseous membrane btw the radius and ulna is the uniting structure in a type of fibrous joint classified as a : a. Syndesmosis b. Synchondrosis c. Symphysis d. Syntosis

a

While watching her boyfriend split wood, a teenager was struck on the back of her carpasl by a sharp-edged flying wedge. Her extensor digitorum tendons were exposed, though not severed, indicating that the surrounding synovial sheath had been opened. What other m. has its tendon surrounded by the same synovial sheet? a. Extensor indicis b. Extensor carpi radialis brevis c. Extensor carpi radialis longus d. Extensor digit minimi

a

Your patient arrived w/ a diagnosis of carpal tunnel syndrome. Which of the following signs/symptoms would be MOST consistent w/ this diagnosis? a. Paresthesia in the lateral 3 and a half digits b. Pain at the lateral radiocarpal joint c. Pain in the anterior forearm from elbow to wrist d. Tingling over the flexor retinaculum

a

A 21 yr old male college student reports to the student health clinic on Monday morning, the day after the super bowl. He explains that he was intoxicated and lost consciousness with his left upper limb draped over the back of a couch. He complains of numbness and paresthesia over the dorsum of his hand on the radial side and is unable to support the weight of his left hand when the hand is placed in a pronated position. What n was most likely damaged? a. Median n b. Ulnar n c. Radial n d. Musculocutaneous n

c

A 31 yr old patient complains of sensory loss over the anterior and posterior surfaces of the medial third of the hand and the medial one and a half fingers. He diagnosed as having "funny bone" symptoms. Which nerve is injured? a. Musculocutaneous b. Ulnar c. Radial d. Medial

b

A claw hand can be present following a. Distal median n injury b. Proximal median n. inury c. Proximal radial n. injury d. Distal radial n injury

b

A patient comes to the clinic after falling hard on their elbow. Which of the following is consistent w/ damage to the ulnar n? a. Diminished arm flexion b. Diminished flexion of the 5th digit c. Diminished extension of the digits d. Diminished supination

b

The brachioradialis a. Has a tendon that passes deep to the flexor retinaculum b. Is innervated by the radial n c. Attaches to the medial epicondyle of the humerus d. Acts at both the elbow and wrist joints

b

The extensor indicis attaches distally into ____ a. The base of the proximal phalanx o the 3rd digit b. The extensor expansion of the 2nd digit c. The dorsal surface fo the 4th metacarpal d. The dorsal surface of the 5th middle phalanx

b

The fourth dorsal interosseous m. is innervated by the a. Recurrent (motor) branch of the median n b. Deep branch of the ulnar nerve c. Superficial branch of the ulnar n d. Superficial branch of the radial n

b

Which of the following are not innervated by the recurrent branch of the median n? a. Opponens pollicis b. Adductor pollicis c. Flexor pollicis brevis d. None of the above

b

Which of the following is not a site of attachment of the biceps brachii? a. Corocoid process b. Coronoid process of ulna c. Bicipital aponeuosis d. Supraglenoid process

b

While walking to class on an icy winter morning, a student slipped and fell on her outstretched hand. There was no Colle's no scaphoid fracture, but she dislocated the middle carpal bone of the proximal row. Which bone was dislocated? a. Capitate b. Lunate c. Scaphoid d. Trapezoid

b

Identify the m sharing a common tendon a. Flexor pollicis longus b. Pronator teres c. Pronator quadratus d. Flexor carpi radialis

b, d

A 42 yr old small business owner decided to increase his social network by joining a tennis club and learning to play. After practicing daily for about three weeks, eh began to experience pain over the lateral region of his elbow. His coach asked him to hold the tennis racket and extend his hand at the wrist. The man felt no pain until the coach resisted the extension of his hand. Pinpointing the site of the pain, the man put his finger on his lateral epicondyle. Which condition describes the most likely cause of his elbow pain? a. Rupture of the common extensor tendon b. Avulsion of the lateral epicondyle of the elbow c. Lateral epicondylitis of the elbow d. Bursitis in the subcutaneous olecranon bursa

c

Tendons of the Extensor Digitorum are linked by a. Extensor retinaculum b. Collateral ligaments c. Intertendinous connections d. Synovial membrane

c

The pulse of the radial artery is readily palpable where the vessel passes: a. Superficial to the tendons of the extensor pollicis brevis and abductor pollicis longus b. Btw the tendons of the palmaris longus and flexor carpi ulnaris c. Lateral to the tendon of the flexor carpi radialis d. Superficial to the carpal tunnel

c

The supinator is innervated by the ____ n. a. Musculocutaneous b. Lateral cutaneous c. Radial d. Ulnar

c

What m tendon is enclosed within its own synovial sheath in the carpal canal? a. Flexor carpi ulnaris b. Flexor digitorum profundus to 2nd digit c. Flexor pollicis longus d. Palmaris longus

c

A 16 yr old boy received a superficial cut on the ulnar side of his forearm. The superficial vein most likely affected is the: a. Median cubital b. Radial c. Cephalic d. Basilic

d

A 38 yr old homebuilder was involved in an accident and remains unable to supinate his forearm. Which of the following n is most likely damaged? a. Musculocutaneous b. Axillary and radial c. Suprascapular and axillary d. Radial and musculocutaneous

d

A 42 yr old woman comes to your clinic w/ a 6 month history of numbness and tingling on the palmar aspect of her lateral three and one-half fingers, loss of pronation, and flattening of the thenar eminence. Injury to which n could cause these symptoms? a. Axillary n b. Radial n c. Ulnar n d. Median n

d

A 45 yr old patient exhibits weak hand pronation, especially when initiating the movement. You suspect a problem with the pronator quadratus. Which statement is incorrect about the pronator quadratus? a. It is innervated by the anterior interosseous branch of the median n b. It is the only m. attached to the ulna at one end of the radius at the other c. It is the deepest m. in the forearm d. It can be palpated from the dorsal aspect w/ deep pressure

d

An injured n containing afferent fibers from the skin of a worker's hand travels through which of the following parts of a spinal n.? a. Dorsal primary ramus b. Ventral root c. Posterior cutaneous branch d. Dorsal root

d

During an industrial accident, a sheet metal worker lacerates the anterior surface of his wrist at the junction of his wrist and hand. Examination reveals o loss of hand function, but the skin on the thumb side of his palm is numb. Branches of which nerve must have been severed? a. Ulnar b. Medial antebrachial cutaneous c. Radial d. Median

d

Pronator teres syndrome is a condition occurring when a n is excessively compressed as it passes btw the 2 heads of the pronator teres m. Which n. is entrapped? a. Deep branch of radial n b. Superficial branch of ulnar n c. Musculocutaneous n d. Median n

d

The axis of rotation at the distal radioulnar joint is through the: a. Capitate bone b. Head of the radial c. Head of the ulna d. Styloid process of the ulna

d

The extensor expansion of the ring finger receives tendons from all of the following except: a. Extensor digitorum b. Palmar interosseous c. Lumbrical d. Extensor carpi ulnaris

d

The point of insertion of the flexor digitorum superficialis tendon to the index finger is on the: a. Distal phalanx b. Second metacarpal c. Proximal phalanx d. Middle phalanx

d

Wasting of the thenar eminence can be caused by injury to the a. Radial n b. Musculocutaneous n c. Deep branch of the ulnar n d. Medial recurrent n

d

Which of the following structures is unique to a synovial joint? a. Accessory ligaments b. Bursae c. Fibrocartilage d. Joint cavity

d

Your 56 yr old patiient demonstrates weak wrist flexion. Which m. would not be expected to be associated w/ wrist flexion weakness? a. Flexor carpi ulanris b. Flexor carpi radialis c. Flexor digitorum profundus d. Brachioradialis

d