Anatomy Exam 3

The palmar interossei insert onto digits ___ and have a function of______? 2-5 - Adduction of the digits 3-5 - Abduction of the digits 2, 4, 5 - Adduction of the digits 2,3, 5 - Abduction of the digits

2, 4, 5 - Adduction of the digits

The following is an intrinsic hand muscle: APL APB EPL EPB

APB

Characteristic of a Dupuytren's contracture: Seen most often in men>50 Pulls digits 4 and 5 into flexion at the MCP and PIP joints A progressive shortening, thickening and fibrosis of the palmarfascia and aponeurosis All options are characteristics

All options are characteristics

This arm muscle works with the supinator muscle: Triceps Brachii Corocobrachialis Brachialis Biceps Brachii

Biceps Brachii

When you pour M &Ms, skittles, or your favorite bite sized candy into the palm of your left hand, this muscle in the left arm has contracted to make it happen: Flexor carpi ulnaris Flexor carpi ulnaris Pronator Teres Biceps Brachii

Biceps Brachii

A deformity in which the PIP is flexed and the DIP is extended is a: Mallet finger Jersey Finger Swan neck deformity Boutonierre

Boutonierre

Which muscle is the strongest elbow flexor when the arm is positioned in pronation? Pronator teres Biceps brachii Brachialis Brachioradialis

Brachialis

This muscle, located in the posterior compartment of the forearm does NOT extend into the hand: Brachioradialis Extensor Carpi Ulnaris Extensor Carpi Radialis Brevis Extensor Digiti Minimi

Brachioradialis

This structure on the distal anterior aspect of the humerus accommodates the ulna during certain motions: Radial Fossa Coronoid Fossa Olecranon fossa Trochlea

Coronoid Fossa

This condition results from the EPB and APL tendons being inflamed Tenosynovitis De Quervain's syndrome Carpal tunnel syndrome Dupuytren's contracture

De Quervain's syndrome

This muscle works with FCU to adduct the wrist: ECRL ECRB EDC ECU

ECU

The MCP of digits 2-5 are pulled into flexion by all but the following muscles EXCEPT: Lumbricals FDS FDP EDC

EDC

This single extensor muscle is essentially the counterpart of the FDS/FDP combo on the flexor side: EDM EDC ECRB ECRL

EDC

This muscle is responsible for extension at the IP joint of the first digit EDI EDC EPL EPB

EPL

The anterior compartment of the arm is responsible for the following primary motion(s): Pronation Supination Elbow flexion Elbow extension

Elbow flexion

Which one of these muscles does not originate on the medial epicondyle? Flexor carpi ulnaris Pronator teres Flexor carpi radialis Extensor carpi ulnaris

Extensor carpi ulnaris

During pronation/supination, the ulna moves on the radius: True False

False

The EDM is responsible for extending the MCP and IP of the index finger. True False

False

The FDS is responsible for flexion of ALL IP joints in the ring finger (digit 4) True False

False

The distal radioulnar joint is responsible for pronation/supination and is covered by the annular ligament. True False

False

The long head triceps attaches to the supraglenoid tubercle of the scapula: True False

False

The only tendons that go through the carpal tunnel are the FDS/FDP. True False

False

The superficial layer of extensor muscles all extend into the hand: True False

False

The tendons of the FDP are "stacked" as they pass through the carpal tunnel. True False

False

Chuck is often told he has cold hands. Aside from the winterweather, Chuck also has primary Raynaud's disease. What is themain risk factor for this pathology Rheumatoid Arthritis Family History Lupus Smoking and/or alcohol use

Family History

When the FCU and FCR contract simultaneously what happens at the wrist? Extension Radial deviation (Abduction) Unlar Deviation (Adduction Flexion

Flexion

The Median nerve innervates many of the forearm flexors with the exception of: Flexor carpi radialis Flexor carpi ulnaris Palmaris longus Flexor digitorum superficialis

Flexor carpi ulnaris

his muscle divides into 4 tendons in the midforearm, goes through the carpal tunnel, and attaches to the middle phalanx of digits 2-5 Flexor digitorum profundus Flexor digitorm superficialis Fexor communis Brachioradialis

Flexor digitorm superficialis

Which muscle has dual innervation (not completely innervated by the median nerve)? Pronator teres-Humeral Head Flexor digitorum profundus Flexor pollicis longus Pronator quadratus

Flexor digitorum profundus

In carpal tunnel syndrome, compression of the median nerve in thecarpal tunnel affects which hand muscle? Palmar interossei Flexor pollicis brevis opponens digiti minimi Adductor pollicis

Flexor pollicis brevis

Which muscle is not part of the anterior compartment of the forearm? Flexor pollicis brevis Flexor carpi radialis Pronator teres Flexor digatorum superficialis

Flexor pollicis brevis

The ECRL and ECRB muscles are both strong wrist extensors. Other similarities between these muscles include all but the following: Innervated by radial nerve Have same proximal attachment Have same distal attachment They radially deviate the wrist

Have same distal attachment

The elbow joint is a classic example of this type of synovial joint: Ball and socked Saddle Hinge Planar

Hinge

What is a cause of gamekeeper's thumb? Hyperabduction of the MCP joint of the thumb Hyperextension of the MCP joint of the thumb Hyperextension of the CMC joint of the thumb Hyperabduction of the CMC joint of the thumb

Hyperabduction of the MCP joint of the thumb

This nerve tracks along the anterior aspect of the humerus and radius/ulna: Ulnar Radial Median Musculocutaneous

Median

The Biceps brachii and Coracobrachialis are both innervated by the following nerve: Median Musculocutaneous Radial Ulnar

Musculocutaneous

Picture yourself using a key to unlock a door. You typically pinch the key between your thumb and the lateral aspect of your index finger. This is called a lateral pinch or key pinch. Without this muscle contracting, the key would drop from your hand. FDS FDP PFL APL

PFL flexor pollicis longus?

Which of the following is not a role of the flexor retinaculum at the wrist? Act as a pulley for the flexor tendons Prevent bowstringing of the flexor tendons Provide stabilization at the distal radioulnar joint Act as an attachment site for intrinsic muscles of the hand

Provide stabilization at the distal radioulnar joint

A midshaft fracture of the humerus would most likely disrupt which nerve? Median Radial Axillary Musculocutaneous

Radial

What bone is Lister's tubercle located on? Is it proximal or distal? Radius, distal Radius, proximal Ulna, proximal Ulna, distal

Radius, distal

60-70% of all carpal fractures involve which bone? Lunate Capitate Hamate Scaphoid

Scaphoid

While rollerblading down Alden St., Felicia falls heavily on her rightwrist. After the fall, she reports severe pain in her anatomical snuffbox. Radiological studies reveal a fracture of the bone deep to thesnuff box called the: Capitate Hamate Pisiform Scaphoid

Scaphoid

What two carpal bones articulate with the radius? Lunate and Capitate Scaphoid and Lunate Triquetrum and Lunate Scaphoid and Pisiform

Scaphoid and Lunate

Which of the following deep layer extensors does NOT share a common proximal attachment? Supinator Abductor Pollicis longus Abductor Pollicis brevis Extensor Indicis

Supinator

What can potentially delay healing\function following of metacarpal fractures? MCPs cannot be immobilized. Abnormal joint types Tendon adhesions The lack of blood supply to the area

Tendon adhesions

What happens during a carpal tunnel release surgery? There is no such thing. People just have to live with carpaltunnel The flexor retinaculum gets cut to relieve pressure off thestructures in the carpal tunnel The extensor retinaculum gets cut to relieve pressure off thestructures in the carpal tunnel The wrist gets amputated

The flexor retinaculum gets cut to relieve pressure off thestructures in the carpal tunnel

Which general statement about forearm extensors is false? They all pass through tunnels in the flexor retinaculum as they pass from forearm into the wrist/hand. There 11 muscles divided into two layers They are all innervated by the radial nerve They assist with movement of the wrist and/or extend the digits

They all pass through tunnels in the flexor retinaculum as they pass from forearm into the wrist/hand.

Which bone is not found in the distal carpal row? Trapezium Hamate Trapezoid Triquetrum

Triquetrum

The abductor pollicis longus is only responsible for abduction and MCP extension of the thumb. True False

True

The pronator teres muscle assists with elbow flexion: True False

True

Damage to which nerve would result in atrophy of the hypothenareminence? Musculocutaneous Median Radial Ulnar

Ulnar

When typing on a computer using proper technique, this action is often necessary to reach the "enter/return" key on the right side of the keyboard. (Thanks synthesis group 9!) Radial Deviation Abduction of the wrist Ulnar Deviation Wrist extension

Ulnar Deviation

What part of the radius articulates with the head of the ulna? Radial Tuberosity Ulnar Notch Radial Styloid Neck of the radius

Ulnar Notch

Damien is cutting a carrot to put into his salad for lunch. Hemistakenly misses the carrot and slices into his palm.Afterwards, he is unable to adduct his thumb, among some otherfunctions of the hand. What nerve did he most likely injure? Median n Axillary n Radial n Ulnar n

Ulnar n

Tennis elbow is a condition that impacts the muscles originating and the lateral epicondyle: Supinator Wrist flexors Wrist extensors Pronator teres

Wrist extensors