USAHS Gross Anatomy Exam 2 Questions and Revised Answers 100% Correct
A 31-year-old professional baseball pitcher suffers a torn medial collateral ligament of the elbow in his throwing arm. Two weeks later, he undergoes "Tommy John surgery," in which the tendon of the palmaris longus muscle is tr...
A 31-year-old professional baseball pitcher suffers a torn medial collateral ligament of
the elbow in his throwing arm. Two weeks later, he undergoes "Tommy John surgery,"
in which the tendon of the palmaris longus muscle is transplanted into the elbow to
reconstruct the damaged ligament. During the operative procedure, the surgeon must
be keenly aware of the close relationship of which of the following structures to the
medial collateral ligament?
Ulnar nerve
Cephalic vein
Radial nerve
Brachial artery
Ulnar artery - Answer- ulnar nerve
A 33-year-old tennis player initially experienced vague pain in the anterior region of her
glenohumeral joint during a game. Then, she had the sensation of something popping
during her third set. During the preliminary examination by her trainer, he noted
tenderness over the intertubercular groove in the humerus, flexion and supination
weakness of the forearm, and an abnormal bulge in the distal part of the anterior part of
her arm. Radiographs of the shoulder and arm did not reveal skeletal abnormalities.
Which of the following statements best describes the most likely cause of the symptoms
and signs in this case?
Avulsion of the supraglenoid tubercle of the scapula
Rupture of the tendon of the long head of the biceps
Rupture of the tendon of the short head of the biceps
Rupture of the long head of the triceps brachii tendon
Rupture of the subscapularis tendon - Answer- Rupture of the tendon of the long head
of the biceps
A 36-year-old plumber slips and breaks a porcelain sink, cutting an anterior aspect of
his wrist deeply on a sharp edge. On arrival to the emergency department, he can
adduct his thumb but not oppose it. Which of the following structures has been
severed?
Anterior interosseous nerve
Ulnar nerve
Posterior interosseous nerve
Radial nerve
,Median nerve - Answer- Median nerve
A 38-year-old homebuilder was involved in an accident and is unable to supinate his
forearm. Which of the following nerves are most likely damaged?
Radial and musculocutaneous
Musculocutaneous and median
Median and ulnar
Suprascapular and axillary
Axillary and radial - Answer- Radial and musculocutaneous
A 42-year-old woman decided she wanted to learn how to play tennis. After she had
practiced daily for about three weeks, she began to experience pain over the lateral
region of her elbow. Her coach asked her to hold the tennis racket and extend her hand
at the wrist. She felt no pain until he resisted the extension of her hand. When he asked
her to pinpoint the site of the pain, she put her finger on her lateral epicondyle. Which of
the following statements best describes the most likely cause of her elbow pain?
Calcification of tissues around the lateral epicondyle
Lateral epicondylitis of the elbow
Avulsion of the lateral epicondyle of the elbow
Rupture of the common extensor tendon
Bursitis in the subcutaneous olecranon bursa - Answer- Lateral epicondylitis of the
elbow
A 64-year-old man with a history of liver cirrhosis has been examined for hepatitis A, B,
and C viruses. In an attempt to obtain a blood sample from the patient's median cubital
vein, a registered nurse inadvertently procures arterial blood. The blood most likely
comes from which of the following arteries?
Ulnar
Superior ulnar collateral
Common interosseous
Brachial
Radial - Answer- Brachial
A 65-year-old man is brought to the emergency room after being attacked in his office
by a disgruntled co-worker. The attacker reportedly used a long, narrow-bladed letter-
opener to inflict multiple stab wounds to the man's back. Physical examination shows a
puncture wound in the posterior axillary fold. The patient presents with weakness in
extension, adduction, and medial rotation of his arm. Which of the following muscles is
most likely cut in this injury?
Levator scapulae
Latissimus dorsi
Pectoralis minor
,Teres minor
Serratus anterior - Answer- Latissimus dorsi
A large dog knocked down a 79-year-old woman. Trying to ease her fall, she
outstretched her upper limb. When she sat up, she noticed that her "wrist" (distal
forearm) was deformed and very painful. She was taken to a hospital where the
orthopedic surgeon said she had a Colles fracture. Which of the following statements
about a Colles fracture is correct?
In this fracture, the distal end of the radius is located distal to that of the ulna.
It is a fracture of the distal end of the radius.
The distal fragment of the fractured bone is displaced anteriorly.
The fracture commonly results from forced flexion of the hand.
It is fracture of the distal ulna. - Answer- It is a fracture of the distal end of the radius.
A patient comes in with a gunshot wound and requires surgery in which his
thoracoacromial trunk needs to be ligated. Which of the following arterial branches
would maintain normal blood flow?
Clavicular
Deltoid
Acromial
Pectoral
Superior thoracic - Answer- Superior thoracic
An 18-year-old boy involved in an automobile accident presents with arm that cannot
abduct. His paralysis is caused by damage to which of the following nerves?
Suprascapular and dorsal scapular
Suprascapular and axillary
Axillary and musculocutaneous
Thoracodorsal and upper subscapular
Radial and lower subscapular - Answer- Suprascapular and axillary
During a breast examination of a 56-year-old woman, the physician found a palpable
mass in her breast. Which of the following characteristics of breast cancer and its
diagnosis is correct?
Dimpling of the overlying skin
Elevated nipple
Shortening of the clavipectoral fascia
Enlargement of the breast
Polymastia - Answer- Dimpling of the overlying skin
The lateral cord of the brachial plexus is named because it lies immediately lateral to
which of the following structures?
Pectoralis minor muscle
Long head of the biceps brachii muscle
Subclavian vein
Axillary artery
, Surgical neck of the humerus - Answer- Axillary artery
The musculocutaneous nerve continues into the forearm as the _______________
lateral cutaneous nerve of the arm.
medial cutaneous nerve of the arm.
lateral cutaneous nerve of the forearm.
posterior cutaneous nerve of the forearm.
posterior cutaneous nerve of the arm - Answer- lateral cutaneous nerve of the forearm
The "boxer's" muscle
the most powerful protractor of the scapula
attaches to the humerus to facilitate anterior movement of arm
attaches to the entire surface of the lateral border of the scapula
the most powerful retractor of the scapula - Answer- the most powerful protractor of the
scapula
Innervation from lower motor neurons in the ventral horn of C5 spinal segment control
all of the following except:
Serratus anterior
Pectoralis minor
Subclavius
Pectoralis major - Answer- pec minor
Which of these rotator cuff muscles does not attach to the greater tubercle?
Subcapularis
infraspinatus
supraspinatus
teres minor - Answer- subscapularis
The levator scapula:
receives motor innervation from the dorsal scapular nerve
attaches to the lateral border of the scapula
does not attach to the posterior tubercle of the axis
helps to rotate the glenoid cavity superiorly - Answer- receives motor innervation from
the dorsal scapular nerve
In testing the function of the long thoracic nerve, have the patient ____:
adduct arm against resistance
elevate scapula while adducting arm
push against a wall with shoulder flexed
grasp an object with hand and pull with resistance - Answer- push against a wall with
shoulder flexed
Scapulo-humeral rhythm abducts the arm 180 degrees vertical beside head. The total of
the 180 degrees is accomplished by:
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