Muscles of the Upper Limb - Posterior Forearm Flashcards
Name muscle A
A - Abductor pollicis longus
What are the origin and insertion sites for muscle A?
Origin - Lateral epicondyle of humerus
Insertion - Olecranon and proximal posterior surface of ulna
A - Anconeus
What is the innervation of muscle A?
Posterior interosseous nerve (C7, C8)
This is a division from the radial nerve
A - Extensor carpi ulnaris
Name muscle A
A - Extensor digiti minimi
What is the function of muscle A?
- Extension at interphalangeal joint of thumb
- Extension at carpometacarpal joints of thumb
A - Extensor pollicis longus
Name muscle A
A - Extensor carpi radialis brevis
What are the origin and insertion sites for muscle A?
Origin - Lateral epicondyle of humerus and adjacent intermuscular septum
Insertion - Base of metacarpals 2 and 3 (dorsal surfaces)
A - Extensor carpi radialis brevis
What is the function of muscle A?
Extension of little finger
A - Extensor digiti minimi
What is the function of muscle A?
Extension of index finger
A - Extensor indicis
What is the innervation of muscle A?
Radial nerve (C6, C7)
This is before the division into superficial and deep branches
A - Extensor carpi radialis longus
What are the origin and insertion sites for muscle A?
Origin - Lateral epicondyle of humerus, radial collateral and anular ligaments (superficial aspect of muscle); Supinator crest of ulna (deep aspect of muscle)
Insertion - Radius (lateral surface superior to anterior oblique line)
A - Supinator
Name muscle A
A - Supinator
What is the innervation of muscle A?
Radial nerve (C6, C7, C8)
A - Anconeus
Name muscle A
A - Anconeus
Name muscle A
A - Anconeus
Name muscle A
A - Extensor digitorum
What is the innervation of muscle A?
Posterior interosseous nerve (C7, C8)
This is a division from the radial nerve
A - Extensor pollicis longus
What is the innervation of muscle A?
Posterior interosseous nerve (C7, C8)
This is a division from the radial nerve
A - Extensor digitorum
Name muscle A
A - Extensor pollicis brevis
Name muscle A
A - Brachioradialis
What are the origin and insertion sites for muscle A?
Origin - Radius (posterior surface distal to abductor pollicis longus) and adjacent interosseous membrane
Insertion - Base of proximal phalanx of thumb (dorsal surface)
A - Extensor pollicis brevis
Name muscle A
A - Extensor pollicis brevis
Name muscle A
A - Extensor carpi ulnaris
What is the innervation of muscle A?
Posterior interosseous nerve (C7, C8)
This is a division from the radial nerve
A - Abductor pollicis longus
What is the innervation of muscle A?
Posterior interosseous nerve (C7, C8)
This is a division from the radial nerve
A - Extensor pollicis brevis
What is the innervation of muscle A?
Deep branch of radial nerve (C7, C8)
A - Extensor carpi radialis brevis
Name muscle A
A - Brachioradialis
What are the origin and insertion sites for muscle A?
Origin - Lateral epicondyle of humerus and posterior border of ulna
Insertion - Tubercle at base of metacarpal 5 or “little finger” (medial side)
A - Extensor carpi ulnaris
What is the function of muscle A?
- Extension of wrist
- Adduction of wrist
A - Extensor carpi ulnaris
What are the origin and insertion sites for muscle A?
Origin - Ulna (posterior surface distal to adbductor pollicis longus) and adjacent interosseous membrane
Insertion - Base of distal phalanx of thumb (dorsal surface)
A - Extensor pollicis longus
What is the function of muscle A?
- Extension of wrist
- Abduction of wrist
A - Extensor carpi radialis longus
What are the origin and insertion sites for muscle A?
Origin - Supraepicondylar ridge of humerus (proximal/lateral aspect) and adjacent intermuscular septum
Insertion - Distal end of radius (lateral surface)
A - Brachioradialis
Name muscle A
A - Brachioradialis
Name nerves A and B
A - Deep branch of radial nerve
B - Superficial branch of radial nerve
What are the origin and insertion sites for muscle A?
Origin - Lateral epicondyle of humerus and adjacent intermuscular septum (together with extensor digitorum)
Insertion - Extensor hood of little finger
A - Extensor digiti minimi
What is the function of muscle A?
Supination of forearm
A - Supinator
What is the innervation of muscle A?
Posterior interosseous nerve (C7, C8)
This is a division from the radial nerve
A - Extensor indicis
What is the innervation of muscle A?
Posterior interosseous nerve (C7, C8)
This is a division from the radial nerve
A - Extensor digiti minimi
Name muscle A
A - Abductor pollicis longus
Name muscle A
A - Extensor pollicis longus
Name muscle A
A - Extensor digitorum
What is the function of muscle A?
- Extension of wrist
- Abduction of wrist
A - Extensor carpi radialis brevis
Name muscles A and B
A - Extensor pollicis longus
B - Abductor pollicis longus
What is the function of muscle A?
- Extension at metacarpophalangeal joint of thumb
- Extension at carpometacarpal joint of thumb
A - Extensor pollis brevis
Name muscle A
A - Extensor pollicis longus
Name muscles A to E
A - Extensor carpi ulnaris
B - Extensor digiti minimi
C - Extensor digitorum
D - Extensor carpi radialis brevis
E - Extensor carpi radialis longus
What is the innervation of muscle A?
Posterior interosseous nerve (C6, C7)
This is a division from the radial nerve
A - Supinator
Name muscle A
A - Extensor carpi radialis brevis
What is the function of muscle A?
- Abduction of ulna (in pronation)
- Accessory extension of elbow joint
A - Anconeus
Name muscle A
A - Extensor digiti minimi
What are the origin and insertion sites for muscle A?
Origin - Lateral epicondyle of humerus and adjacent intermuscular septum and deep fascia
Insertion - Four tendons which insert to extensor hoods of phalanges minus the thumb (dorsal aspects of bases of middle and distal phalanges)
A - Extensor digitorum
Name muscle A
A - Supinator
Name muscle A
A - Extensor carpi radialis longus
Name muscle A
A - Brachioradialis
Name muscle A
A - Extensor carpi ulnaris
What is the innervation of muscle A?
Radial nerve (C5, C6)
This is before the division into superficial and deep branches
A - Brachioradialis
What is the function of muscle A?
- Abduction of carpometacarpal joint of thumb
- Accessory extension of thumb
A - Abductor pollicis longus
What are the origin and insertion sites for muscle A?
Origin - Ulna (posterior surface distal to extensor pollicis longus) and adjacent interosseous membrane
Insertion - Extensor hood of index finger
A - Extensor indicis
Name muscle A
A - Extensor indicis
What are the origin and insertion sites for muscle A?
Origin - Ulna and radius (posterior surfaces distal to attachments of supinator and anconeus) and intervening interosseous membrane
Insertion - Base of metacarpal 1 (lateral side)
A - Abductor pollicis longus
What is the function of muscle A?
Accessory flexion of elbow joint (when forearm is mid-pronated)
A - Brachioradialis
What are the origin and insertion sites for muscle A?
Origin - Supraepicondylar ridge of humerus (distal/lateral aspect) and adjacent intermuscular septum
Insertion - Base of metacarpal 2 (dorsal surface)
A - Extensor carpi radialis longus
Name muscle A
A - Extensor carpi radialis longus
What is the function of muscle A?
- Extension of index, middle, ring and little fingers
- Extension of wrist
A - Extensor digitorum
Name muscle A
A - Supinator
