Test 9

Question 0

Anconeus

Answer 0

O: lateral epicondyle
I: olecranon and superior portion of shaft of ulna
A: extends forearm at elbow joint

Question 1

Triceps brachii

Answer 1

Origin: long head originates from infraglenoid tubericle posterior of humerus
Insertion: olecranon of ulna
Action: extends forearm at elbow joint; supinates and pronates forearm at radioulnar joint to neutral postion

Question 2

Supinator

Answer 2

O: lateral epicondyle
I: lateral surface of proximal 1/3 of radius
A: supinates forearm at radioulnar joint

Question 3

Extensor Capri radialis longus

Answer 3

O: lateral epicondyle of humerus
I: second metacarpal
A: extends and abducts hand at wrist

Question 4

Extensor carpi radialis brevis

Answer 4

O: lateral epicondyle of humerus
I: 3 metacarpal
A: extends and abducts hand wrist

Question 5

Extensor digitorum

Answer 5

O: lateral epicondyle of humerus
I: distal and middle phalanges of each finger
A: extends distal and middle phalanges of each finger at interphalangeal joint proximal and had at wrist

Question 6

Extensor digiti minmi

Answer 6

O: lateral epicondyle of humerus
I: tendon of extensor digitorum on 5th phalanx
A: proximal phalange of little finger at metacarpal joint and hand at wrist

Question 7

Extensor carpi ulnaris

Answer 7

O: lateral epicondyle
I: 5th metacarpal
A: extends and adducts hand at wrist and wrist joint. Ulnar deviation

Question 8

Lumbricals

Answer 8

Flex each finger at metacarpophalangeal joints and extend each finger at interphalangeal joint

Question 9

Palmer interossei

Answer 9

Adduct and flex each finger except middle at metacarpophalangeal joints

Question 10

Dorsal interossei

Answer 10

Abducts finger 2-4 at metacarpophalangeal joints