Elbow, Radioulnar, Wrist, and Hand Joints Practice
Which of the following is the primary function of the extensor digiti minimi muscle?
Extension of the little finger at the metacarpophalangeal joint
T/F: the elbow joint is a hinge-type joint that allows only internal and external rotations
False
The flexor digitorum superficialis muscle performs its action in the frontal plane.
False
The olecranon process is located on the medial aspect of the ulna.
False
Which of the following is the origin of the flexor carpi radialis muscle?
Medial epicondyle of the humerus
Which of the following muscles does not perform wrist extension?
The abductor pollicis longus muscle
Which of the following muscles may not be palpated on the dorsal aspect of the hand?
The abductor pollicis longus muscle
Which of the following is the insertion of the extensor carpi ulnaris muscle?
The base of the fifth metacarpal on the dorsal surface
Which of these muscles may be palpated just proximal to the dorsal aspect of the wrist and approximately 1 cm medial to the radial styloid?
The extensor carpi radialis longus muscle
Which of the following muscles performs extension of the index finger at the metacarpophalangeal joint?
The extensor digiti minimi muscle
Which of the following muscles inserts on the four tendons to bases of middle and distal phalanges of the four fingers on the dorsal surface?
The extensor digitorum muscle
Which of the following is the only muscle that flexes the finger distal interphalangeal joint (DIP) joints?
The flexor digitorum profundus muscle
Which of the following muscles performs flexion of the thumb?
The flexor pollicis longus muscle
In the anatomical position, the tuberosity of the radius is in close proximity to the lateral side of the ulna.
True
In the context of wrist and hand movements, dorsiflexion refers to the movement of the back of the hand and/or the phalanges toward the posterior or dorsal aspect of the forearm.
True
T/F: Medial epicondylitis is frequently referred to as "golfers elbow"
True
T/F: The triceps brachia muscle inserts on the olecranon process of the ulna.
True
T/F: in the anatomical position, the tuberosity of the radius is in close proximity to the lateral side of the ulna
True
The flexor pollicis longus muscle inserts on the base of the distal phalanx of the thumb on the palmar surface.
True
The pronator teres muscle is innervated by the median nerve (C6, C7).
True
The pronator teres muscle originates from the distal part of the medial supracondylar ridge of the humerus and the medial side of the proximal ulna.
True
The triceps brachii muscle inserts on the olecranon process of the ulna.
True
Radioulnar supination is performed by all of the following muscles except the:
anconeus muscle
Radioulnar pronation is performed by all of the following muscles except the:
brachialis muscle.
Disruption of a tendon at or near the insertion of the _____ is known as a jersey or sweater finger and should be addressed surgically within approximately one week.
flexor digitorum profundus muscle
The anterior interosseous nerve that branches from the median nerve innervates the _____.
flexor pollicis longus muscle
The elbow includes all of the following ligaments except the:
interosseous ligament
The supinator muscle originates from the
lateral epicondyle of the humerus and neighboring posterior part of the radius
The _____ muscle does not perform flexion of the elbow.
pronator Quadratus
The actions of the brachioradialis muscle include all of the following except:
weak flexion of the shoulder joint
The actions of the brachioradialis muscle includes all of the following except:
weak flexion of the shoulder joint
The human wrist and hand have more than 30 muscles, of which 11 are intrinsic muscles.
False
The extensors of the wrist include, from lateral to medial, the extensor carpi radialis longus, extensor carpi radialis brevis, and extensor carpi ulnaris.
True
The ulnar collateral ligament is critical to providing medial support to prevent the elbow from abducting when stressed in physical activity.
True
The ulnar nerve provides sensation to the ulnar side of the hand, the ulnar half of the ring finger, and the entire little finger.
True
Which of the following is the sole action of the brachialis muscle?
True flexion of the elbow
