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After sustaining a penetrating wound in the area of the posterior axillary fold, a patient had weakness in medial rotation an
(posterior axillary fold has the latissimus dorsi and teres major in it)
another acceptable answer would be: lower subscapular nerve
An injury to which nerve would result in weakening of abduction (radial deviation) at the wrist joint?
median nerve (flex. carpi radialis)
radial nerve (ext. carpi radialis and abductor pollicis longus)
An elderly man complained of pain in his shoulder when he brought his forearm and hand behind his back while dressing. It was
(key word is lateral rotators)
other acceptable answers: teres minor, posterior deltoid
A 45-year-old patient presents with an inability to draw the scapula forward and downward because of paralysis of the pectora
fracture of the coracoid process
A 22-year-old man suffered a compression injury to his posterior interosseous nerve as it enters the supinator muscle. Compre
motor innervation to the abductor pollicis longus muscle
During an automobile accident, a 38-year-old woman fractured the neck of her right radius and damaged a closely related nerve
skin sensation down the lateral surface of the forearm
(the nerve that she damaged was the radial nerve)
A 16-year-old male was hit on his left wrist by a thrown baseball. Radiographic evaluation revealed that he had fractured the
A 16-year-old patient has weakness flexing the metacarpophalangeal (MP) joint of the ring finger (4th digit) and is unable to
A runner trips and falls on his shoulder, resulting in a chipping off of the lesser tubercle of the humerus. Which of the fol
(the coracohumeral ligament, teres minor, supraspinatus, and infraspinatus attach to the greater tubercule)
The two most medial lumbrical muscles are innervated by the:
deep branch of the ulnar nerve
Following a radical mastectomy on the right side, a 56-year-old woman has great difficulty raising her right arm over her hea
long thoracic nerve
the most powerful supinator of the forearm is the
After a fall, a soccer player is diagnosed with a separated shoulder where the acromion is displaced inferiorly relative to t
A patient complains of sensory loss over the area indicated by the dark shading shown in the figure above. There is no obviou
superficial branch of the radial nerve
If the muscles listed below contracted simultaneously, which group would be most effective in rotating the glenoid cavity of
Pectoralis major, latissimus dorsi, rhomboids
A 21-year-old patient has a lesion of the superior trunk of the brachial plexus resulting in paralysis (Erb-Duchenne paralysi
Arm tending to be in a medially rotated position
A man inadvertently slashes the anterior surface of his wrist while repairing his car. Which of the following structures ente
ulnar artery and ulnar nerve
(if it is above the flexor retinanculum, then everything inside the carpal tunnel will be protected)
While playing basketball, a 16-year-old girl is knocked to the floor by another player and suffers a supracondylar fracture (
A 36-year-old man sustains a stab wound to the most proximal and medial portion of the cubital fossa. Which of the following
After heavy consumption of alcohol before and after the Texas-OU game, an 18-year-old man passed out with his arms pressed ag
A construction worker suffers a destructive injury of the structures related to the anatomical snuffbox. Which of the followi
extensor pollicis longus tendon
other acceptable answers: radial artery, extensus pollicis brevis, abductor pollicis longus
In a patient with Erb-Duchenne palsy (injury to superior parts of the brachial plexus), a nerve arising from the superior tru
If the muscles listed below contracted simultaneously, which group would be most effective in elevating the scapula?
Rhomboid major, levator scapulae, trapezius
A 25-year-old construction worker was involved in an accident and is unable to supinate his forearm. Which of the following n
Radial and musculocutaneous
(biceps brachii and supinator are the two supinators)
Birth-related injuries to the lower portions (C8 -T1) of the brachial plexus could best be demonstrated by having the patient
Abduct and adduct the fingers
(the main nerve affected is the ulnar nerve. the branches are medial pectoral nerve and both medial cutaneous nerves)
Following a blow to the elbow, a radiograph revealed that the medial epicondyle of a 6-year-old boy's humerus was avulsed (di
flexor digitorum profundus
the muscles in the deep group won't make further displacement (flexor digitorum profundus and flexor pollicis longus)
A 25-year-old male separates the lesser tubercle of the humerus from the main part of the bone following a fall on his should
A 70-year-old woman falls while descending stairs resulting in her having difficultly moving her shoulder. Examination reveal
posterior circumflex humeral
A patient sustains an injury to the brachial plexus indicated by the vertical line in the figure above. Which action at the g
musclulocutaneous nerve is the only one affected (brachialis, biceps brachii, and coracobrachialis are all affected)
A bicycle rider has weak abduction and adduction of her fingers but has no difficulty with ulnar deviation (adduction) at the
ulnar nerve at the pisiform bone
A patient bleeding from the shoulder as a result of a knife wound is in fair condition because there is a vascular anastomosi
(since there was a cut at the shoulder, the suprascapular artery was probably the one that was cut)
A 12-year-old girl falls on her outstretched hand and has a fracture of the scaphoid bone. The fracture is most likely accomp
A patient has weakness of the hand and a pattern of sensory loss that suggests an ulnar nerve lesion. Examination confirms th
Flexor carpi ulnaris
(cubital tunnel syndrome --> medial condyle, ulnar collateral ligament, two heads of flexor carpi ulnaris muscle)
A 50-year-old woman is diagnosed with apical lung cancer that invades the inferior trunk of the brachial plexus. Which muscle
Thumb and finger adduction
Which structure pierces the clavipectoral fascia between the superior border of the pectoralis minor and the clavicle (i.e.,
The left breast and left axillary lymph nodes were surgically removed in a 48-year-old woman to treat her aggressive breast c
Which muscle can best adduct (cause ulnar deviation) at the wrist joint?
Extensor carpi ulnaris
Which muscle usually lacks an attachment on the humerus?
Extensor carpi radialis longus
You tap a patient’s right biceps brachii tendon with a reflex hammer to stretch its tendon. Assuming normal function, this ma
Recruit motor units within the right biceps brachii muscle to produce a muscle contraction.
Which structure is least likely to be part of the humerus?
Following an automobile accident with neck injuries, a 46-year-old woman presents with muscle atrophy in the supraspinous and
The most basic force-producing element that the nervous system can activate is called the:
Where is the intervertebral foramina?
Are bounded superiorly and inferiorly by the pedicles of adjacent vertebrae
Select the muscle that will compensate in part for paralysis of the supinator muscle
A patient has weakness of elbow flexion and supination of the hand after sustaining a knife wound that severs a nerve in the
Sensory loss over the lateral surface of the forearm
Sensory information from the dermatome of T1 is least likely to be sent to the CNS through which
Lateral cord of the brachial plexus
A 41-year-old woman suffers a transverse fracture of the radius proximal to the attachment of the pronator teres muscle. The
A 29-year-old male wrestler is admitted to the hospital with excruciating pain in his right shoulder and
proximal arm. Radi
Which artery is most likely to be a direct branch of the axillary artery?
A 19-year-old man is brought to the emergency room after dislocating his shoulder while playing football. Following treatment
Radiographic examination of a patient reveals a fracture at her wrist joint. Physical examination reveals paralysis of the mu
While doing a physical examination of the hand, you notice that your patient can easily touch the tip of his thumb with his l
Your patient has decreased arterial blood flow in the subclavian artery. Which artery is least likely to also have decreased
Superior thyroid artery
The structure immediately deep to the pronator quadratus muscle is the
You are asked to take a radial pulse to determine the heart rate of a patient. This pulse is felt lateral to
Flexor carpi radialis
In the event of intervertebral disk herniation through the annulus fibrosus in the cervical region, which ligament is in an a
A soccer player is taken to the emergency room after sustaining a neck injury following a collision with
another player. Th
C4 and C5
During physical examination a patient is unable to initiate abduction of her arm, and is unable to flex at the elbow and glen
Which superficial back muscle is located within the posterior triangle of the neck?
A 24-year-old male body builder has enlarged his shoulder muscles to such a degree that the size of his quadrangular space is
A 42-year-old mechanic has a hand dysfunction from selective involvement of the anterior interosseous branch of the median ne
flex the interphalangeal joint of thumb.
Following a wound to the soft tissues on the medial side of the elbow, a major nerve was repaired at the site where it passed
Superior ulnar collateral
Which muscle flexes the cervical region of the vertebral column?
Which muscle pair acts synergistically to produce superior rotation of the scapula?
Serratus anterior, Trapezius
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