Below are written questions from previous quizzes and exams. Click here for a Practical Quiz - old format or Practical Quiz - new format.
- The extensor expansion of the ring finger receives tendons from all of the following EXCEPT:
Dorsal interosseus
Extensor carpi ulnaris
Extensor digitorum
Lumbrical
Palmar interosseus
- A girl playing softball cuts the palm of her hand as she scoops up a piece of glass along with the ball.
If the only nerve damaged is the recurrent branch of the median nerve, she would lose what
movement of the thumb?
Abduction
Adduction
Flexion of the distal phalanx
Opposition
- The main source of blood to the superficial palmar arterial arch is the:
Deep branch of the ulnar artery
Radial artery
Superficial palmar branch of the radial artery
Ulnar artery
- What sesamoid bone develops in the tendon of flexor carpi ulnaris and is therefore not a part of the
wrist joint?
Capitate
Lunate
Pisiform
Scaphoid
Triquetral
- In order to check the pulse of a child whose forearm is in a cast, the pediatrician presses her finger
into the depth of the "anatomical snuffbox". The tendon lying immediately medial (ulnar) to the
physician's finger belongs to what muscle?
Brachioradialis
Extensor carpi radialis brevis
Extensor carpi radialis longus
Extensor pollicis brevis
Extensor pollicis longus
- While watching her boyfriend split wood, a teenager was struck on the back of her carpals 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 muscle has its tendon surrounded
by the same synovial sheath?
Extensor carpi radialis brevis
Extensor carpi radialis longus
Extensor digiti minimi
Extensor indicis
Extensor pollicis longus
- The signs and symptoms of carpal tunnel syndrome may vary among patients, but they always result
from compression of what structure in the carpal canal?
Median nerve
Radial artery
Superficial radial nerve
Ulnar artery
Ulnar nerve
- What muscle tendon is enclosed within its own synovial sheath in the carpal canal?
Flexor carpi ulnaris
Flexor digitorum profundus to 2nd digit
Flexor digitorum superficialis to 2nd digit
Flexor pollicis longus
Palmaris longus
- The point of insertion of the flexor digitorum superficialis tendon to the index finger is on the:
Distal phalanx
Middle phalanx
Proximal phalanx
Second metacarpal
Trapezoid bone
- In order to evaluate the carpal-metacarpal joint of the thumb, the median nerve must be
deadened at the wrist (causing paralysis of the muscles supplied by it distal to the injection) to
test the joint. Which movement of the thumb would be most affected by the anesthetic?
Abduction
Adduction
Extension
Flexion
Opposition
- What arterial vessel accompanies the deep branch of the ulnar nerve across the palm?
Deep palmar arterial arch
Radial
Radialis indicis
Superficial palmar arterial arch
Ulnar
- The fourth dorsal interosseous muscle is innervated by the:
deep branch of the ulnar nerve
dorsal branch of the ulnar nerve
recurrent (motor) branch of the median nerve
superficial branch of the radial nerve
superficial branch of the ulnar nerve
- A student is rollerblading on the Diag and while trying to avoid a bicyclist falls heavily on his right wrist. After the fall he notes severe pain in the anatomical snuff box. Radiological studies reveal a fracture of the bone deep to the snuff box called the
capitate.
hamate.
lunate.
scaphoid.
trapezium.
A person carrying a soft drink in their right hand slipped on some ice and the bottle broke in their hand. A shard (jagged piece) of glass entered the hand and severed all of the tissue from the skin down to the metacarpal bone. 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 and 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 and required six hours of surgery.
- Which of the following muscle tendons was NOT involved?
the flexor digitorum profundus muscle
the flexor digitorum superficialis muscle
the first dorsal interosseous muscle
the first lumbrical muscle
the second palmar interosseous muscle
- Which of the following nerves was most likely cut?
common palmar digital branches of the median nerve
deep branch of the ulnar nerve
dorsal digital branch of the radial nerve
motor (recurrent) branch of the median nerve
proper palmar digital branch of the ulnar nerve
- The excessive bleeding most likely came from which of the following arteries?
deep palmar arterial arch
princeps pollicis artery
radial artery
radialis indicis artery
ulnar artery
The following description pertains to the following questions:
A patient sustained multiple deep lacerations on the palm of his hand and anterior surface of his wrist. During examination, the physician put a piece of paper between adjacent surfaces of the patient's index and middle fingers and found him unable to squeeze them together with sufficient force to hold the paper.
- What muscles are being tested?
First dorsal and first palmar interosseous muscles
First dorsal and second palmar interosseous muscles
First lumbrical and second dorsal interosseous muscles
Second dorsal and first palmar interosseous muscles
- The most specific nerve branch to these muscles is the:
Deep branch of the ulnar nerve
Median nerve
Recurrent (motor) branch of the median nerve
Superficial branch of the ulnar nerve
Ulnar nerve
- Bleeding from a superficial cut in the middle of the palm of the hand near the proximal transverse crease comes mainly from what vessel?
Princeps pollicis artery
Radial artery
Radialis indicis artery
Superficial palmar arch
Ulnar artery
- A deep puncture wound in the palmar surface of the little finger near the proximal IP joint might introduce infection into which synovial cavity:
Bursa of flexor carpi ulnaris
Fibrous digital sheath of fingers
Intercarpal joint space
Radial bursa
Ulnar bursa
- In carpal tunnel syndrome, compression of the median nerve in the carpal tunnel affects which hand muscle?
Adductor pollicis
Second palmar interosseus
Opponens digiti minimi
Flexor pollicis brevis
- After suffering a cut deep to the hypothenar eminence, the patient is unable to hold a sheet of paper between the second and third digits. The nerve most likely injured was the:
Deep radial
Deep ulnar
Recurrent (motor) branch of median
Superficial radial
- What movement of the thumb would be most affected by lesion of the median nerve in the cubital fossa:
Flexion
Abduction
Adduction
Extension
- Structures within the carpal tunnel include:
Radial bursa
Ulnar nerve
Palmar aponeurosis
Superficial palmar arterial arch
Adductor pollicis muscle
