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Chapter 9 Upper Extremities

Terms in this set (61)

which group of ligaments contributes to the formation of the glenoid labrum?
glenohumeral
which rotator cuff muscle inserts on the lesser tubercle of the humerus?
subscapularis
which nerve is compressed in carpal tunnel syndrom?
median
what is the major stabilizing mechanism for the distal radioulnar joint?
triangular fibrocartilage
which muscle is the main flexor of the forearm?
biceps brachii
which rotator cuff muscle is located on the anterior surface of the scapula
subscapularis
Which rotator cuff muscle is most commonly injured?
Supraspinatus
the primary function of the glenoid labrum is to
deepen the glenoid fossa
which ligament binds the radial head to the ulna?
anular
which ligamentous structure spans the wrist to create an enclosure for the passage of tendons?
flexor retinaculum
which of the following elbow joint ligaments consists of an anterior band, a posterior band and a transverse band?
ulnar collateral
the most medial and superficial muscle located in the anterior compartment of the forearm is the
flexor carpi ulnaris
which of the following finger ligaments prevents separation of the metacarpals?
deep transverse metacarpal
which of the following arteries courses inferiorly on the medial side of the humerus, then continues anterior to the cubital fossa of the elbow and is the principal arterial supply of the arm?
brachial
the cephalic vein continues superiorly as which vein?
subclavian
the supraspinatus tendon inserts on the lesser tubercle of the humerus
false
the trochlea of the humerus articulates with the capitellum of the radius
false
the pronator teres muscle has two heads of origin
true
the ulnar nerve is located between the medial epicondyle of the humerus and the olecranon process
true
in the middle of the body of the humerus, on the anterior surface, is a roughened area called the deltoid tuberosity
true
the subscapular bursa is the main bursa of the shoulder joint
false
the radial tuberosity serves as the attachment point for the biceps brachii muscle
true
all five of the superficial muscles in the ventral group of the forearm have an origin from the common flexor tendon
true
the common interosseous artery begins at the level of the radial head and courses beneath the brachioradialis muscle
false
the brachial veins begin in the elbow from the union of the ulnar and radial veins and end in the axillary vein
true
located on the anterior surface of the scapula is a beaklike process termed the
corocoid process
tendon that blends with the superior glenoid labrum
biceps brachii, long head
a large depression located on the anterior surface of the distal humerus is termed
corocoid fossa
ligament that reinforces the medial side of the elbow
ulnar collateral
extensor muscle of the lateral forearm attaching to the radial styloid process
brachioradialis
the extension of the axillary artery that descends along the anterior aspect of the arm is termed
brachial artery
ligamentous structure that creates and enclosure across the carpal tunnel for the passage of the tendons and the median nerve
flexor retinaculum
group of tendons that collectively flex the fingers and wrist
palmar
stabilizes, elevates, retracts and depresses scapula
trapezius
elevates scapula
levator scapula
extends, medially rotates and adducts the humerus
latissimus dorsi
retracts scapula and fixes scapula to thoracic wall
rhomboid major
spinous processes of T2-T5
rhomboid minor
deltoid tuberosity of humerus; flexes and medially rotates abductor, extensor and lateral rotator of humerus
deltoid
inferior angle of scapula, intertubular groove of humerus, adducts and medially rotates humerus
teres major
axillary border of scapula, laterally rotates humerus and stabilizes glenohumeral joint
teres minor
supraspinous fossa of scapula, great tubercle of humerus, abducts humerus and stabilizes glenohumeral joint
supraspinatus
subscapular fossa of scapula, lesser tubercle of humerus, medially rotates humerus and stabilizes glenohumeral joint
subscapularis
medial half of clavicle, lateral lip intertubercular groove of humerus; adducts, medially rotates and flexes humerus
pectoralis major
pectoralis minor
coracoid process of scapula
angles to eight or ninth ribs
serratus anterior
inferior surface of the clavicle, stabilizes clavicle and depresses shoulder
subclavius
bicipital aponeurosis and radiant tuberosity, supinates and flexes forearm
biceps brachii
distal humerus, flexion of elbow joint
brachialis
coracoid process of scapula, middle third medial surface of humerus, assists in flexing and adducting arm
coracobrachialis
triceps brachii
proximal end of olecranon process of the ulna
proximal olecranon process of the ulna
anconeus
what is the triangular fibrocartilidge complex?
the TFCC (articular disk) is the major stabilizing element of the distal radioulnar joint. It is a fan shaped band of fibrous tissue.
what is the glenoid labrum and which ligaments contribute to its connection?
a fibrocartilaginous ring that deepens the articulating surfaces of the glenoid fossa. glenohumeral ligaments contribute to its formation
what is the anular ligament?
ligament of the elbow and forms a fibrous ring around the radial head and attaches to the anterior and posterior margins of the radial notch of the ulna
the supraglenoid tubercle and infraglenoid tubercle of the scapula serve as attachments for which muscles?
scapular spine, acromion process, coracoid process and glenoid process
describe the aricular joint capsule of the shoulder joint
completely encloses the shoulder joint and is quite loose to allow for extreme freedom of movement.
list the function of the intercarpal (intrinsic) ligaments of the wrist
support the many articulations between the carpal bones
describe the flexor retinaculum
thick ligamentous band that stretches across the carpal tunnel to create an enclosure for the passage of tendons and the median nerve.
list the functions of the palmar and dorsal tendon groups
the palmar tendon group collectively flexes the fingers and the wrist.
list the nerves that supply the muscles of the forearm and hand
median, ulnar, musculocutaneous, radial nerves
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