Kinesiology - Chapter 7
Carpal tunnel syndrome is a condition in which there is an increased pressure in the carpal tunnel, which interferes with the normal function of the median nerve.
True
Which of the following is the primary function of the extensor digiti minimi muscle? 1. Extension of the index finger at the metacarpophalangeal joint 2. Extension of the little finger at the metacarpophalangeal joint 3. Flexion of the index finger 4. Flexion of the thumb
Extension of the little finger at the metacarpophalangeal joint
In the context of wrist and hand movements, radial flexion refers to the movement of the thumb side of the hand toward the medial aspect or radial side of the forearm.
False
The human wrist and hand have more than 30 muscles, of which 11 are intrinsic muscles.
False - 18 intrinsic muscles
Which of the following muscles performs actions in the frontal plane about the sagittal axis? 1. The abductor pollicis longus muscle 2. The extensor digitorum muscle 3. The extensor indicis muscle 4. The extensor pollicis longus muscle
The abductor pollicis longus muscle
Which of the following is the insertion of the flexor digitorum profundus muscle? 1. The base of the distal phalanxes of the four fingers 2. The base of the fifth metacarpal on the dorsal surface 3. The base of the second metacarpal on the dorsal surface 4. The base of the third metacarpal on the dorsal surface
The base of the distal phalanxes of the four fingers
All of the flexor tendons except for the flexor carpi ulnaris and palmaris longus pass through the carpal tunnel, along with the median nerve.
True
Hitting the "funny bone" and experiencing a painful tingling sensation is actually a contusion to the ulnar nerve.
True
In the context of wrist and hand movements, dorsiflexion refers to the movement of the back of the hand toward the posterior or dorsal aspect of the forearm.
True
The extensor carpi ulnaris muscle and the flexor carpi ulnaris muscle are the only muscles involved in ulnar deviation.
True
The three wrist flexors, from medial to lateral, are the flexor carpi ulnaris, palmaris longus, and flexor carpi radialis.
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
The wrist flexor muscles have their origin on the medial epicondyle of the humerus.
True
The flexor digitorum superficialis muscle performs its action in the frontal plane.
False
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. 1. extensor digitorum muscle 2. extensor indicis muscle 3. flexor digitorum profundus muscle 4. flexor digitorum superficialis muscle
flexor digitorum profundus muscle
In addition to direct contusions on the ulnar nerve at the posteromedial elbow leading to symptoms, the ulnar nerve may develop symptoms from which of the following? 1. Chronic contusions or pressure over ulnar nerve area 2. The ulnar nerve Subluxing or slipping out of its grooves 3. Traction injury to this nerve with the medial stress placed on the elbow during pitching or in conjunction with an ulnar collateral ligament sprain 4. All of the above
All of the above
Which of the following is the primary function of the extensor pollicis longus muscle? 1. Extension of the little finger 2. Extension of the thumb 3. Flexion of the index finger 4. Flexion of the thumb
Extension of the thumb
Which of the following is the origin of the flexor carpi radialis muscle? 1. Medial epicondyle of the humerus 2. Middle anterior surface of the radius 3. Posterior aspect of the proximal ulna 4. Proximal three-fourths of the anterior and medial ulna
Medial epicondyle of the humerus
Which of the following is the insertion of the extensor carpi radialis longus muscle? 1. The base of the distal phalanges of the four fingers 2. The base of the fifth metacarpal on the dorsal surface 3. The base of the second metacarpal on the dorsal surface 4. The base of the third metacarpal on the dorsal surface
The base of the second metacarpal on the dorsal surface
Which of the following is the insertion of the extensor carpi radialis brevis muscle? 1. The base of the distal phalanges of the four fingers 2. The base of the fifth metacarpal on the dorsal surface 3. The base of the second metacarpal on the dorsal surface 4. The base of the third metacarpal on the dorsal surface
The base of the third metacarpal on the dorsal surface
In the context of wrist and hand movements, opposition refers to the movement of the thumb across the palmar aspect to oppose the palm or any combination of the phalanges.
True
In the context of wrist and hand movements, ulnar flexion refers to the movement of the little finger side of the hand toward the medial aspect or ulnar side of the forearm.
True
Movements of the wrist joint include flexion, extension, abduction, and adduction.
True
The extensor digitorum muscle, also known as the extensor digitorum communis, is the only muscle involved in extension of all four fingers.
True
The extensors of the wrist include, from lateral to medial, are the extensor carpi radialis longus, extensor carpi radialis brevis, and extensor carpi radialis.
True
The flexor pollicis longus muscle inserts on the base of the distal phalanx of the thumb on the palmar surface.
True
When using the flexor digitorum profundus and flexor digitorum superficialis to tightly grip an object with the fingers, which of the following muscles assist in this effort by stabilizing the wrist? 1. The abductor pollicis longus, extensor pollicis longus and extensor pollicis brevis 2. The extensor digitorum, the extensor indicis, and the extensor digiti minimi 3. The extensor carpi radialis longus, extensor carpi radialis brevis, and extensor carpi ulnaris 4. The flexor carpi ulnaris, palmaris longus, and flexor carpi radialis
he extensor carpi radialis longus, extensor carpi radialis brevis, and extensor carpi ulnaris
A gamekeeper's or skier's thumb is a common injury that involves a sprain of the ___________ of the thumb metacarpophalangeal joint and may require surgery when severely sprained. 1. palmar carpometacarpal ligament 2. palmar metacarpal ligament 3. radial collateral ligament 4. ulnar collateral ligament
ulnar collateral ligament
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? 1. The extensor carpi radialis longus muscle 2. The flexor carpi ulnaris muscle 3. The flexor pollicis longus muscle 4. The palmaris longus muscle
The extensor carpi radialis longus muscle
Essentially all of the wrist and finger extensors are innervated by the: 1. musculocutaneous nerve. 2. musculocutaneous nerve. 3. 4. ulnar nerve.
radial nerve.