Forearm

Question 1

Name the superficial anterior forearm muscles

Answer 1

Pronator teres
Palmaris longus
Flexor calpi radialis
Flexor clapi ulnaris 
Flexor digitorum superficialis

Question 2

Name the deep anterior forearm muscles

Answer 2

Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus

Question 3

What are all anterior forearm muscles innervated by?

Answer 3

Median nerve

Deep layer median nerve (anterior interosseous)

Question 4

The flexor digitorum profundus has a medial and lateral part, what are these parts innervated by?

Answer 4

Medial - ulnar nerve

Lateral - median nerve

Question 5

What is the arterial supply to the deep muscles of the anterior forearm?

Answer 5

Anterior interosseous artery

Question 6

Pronator quadratus

Answer 6

Pronates forearm

Question 7

Flexor pollicis longus

Answer 7

Flexes phalanges of thumb

Question 8

Flexor digitorum profundus

Answer 8

Flexes distal phalanges of medial 4 digits, assists with flexion of hand at wrist

Question 9

Flexor calpri radialis

Answer 9

Flexes and abducts hand at wrist

Question 10

Flexor carpi ulnaris

Answer 10

Flexes and adducts hand at wrist

Question 11

Pronoator teres

Answer 11

Pronates forearm and assists with elbow flexion

Question 12

Palmaris longus

Answer 12

Flexes hand at wrist and tenses palmar aponeurosis

Question 13

Flexor digitorum superficialis

Answer 13

Flexes middle and proximal phalanges of medial 4 digits, flexes hand at wrist

Question 14

Attachment of pronator quadratus

Answer 14

Distal 4th of anterior ulna to distal 4th of anterior radius

Question 15

What muscle of the anterior forearm has 2 heads?

Answer 15

Pronator teres

Flexor digitorum superficialis

Question 16

Attachment of pronator teres

Answer 16

Medial epicondyle of humerus and coronoid process of ulna TO midway along lateral surface of radius

Question 17

Attachment of palmaris longus

Answer 17

Medial epicondyle of humerus to distal half of flexor retinaculum and palmar aponeurosis

Question 18

Attachment of flexor calpi radials

Answer 18

Medial epicondyle of humerus to base of 2nd metacarpal

Question 19

Attachment of flexor carpi ulnaris

Answer 19

Humeral ulnar head - medial epicondyle of humerus and coronoid process of ulnar
Radial head - superior half of anterior radials
TO - bodies of middling phalanges of medial 4 digits

Question 20

Attachment of flexor digitorum profundus

Answer 20

Medial and anterior surface of proximal 3/4 of ulna and interosseous membrane to palmar base of digital phalanges of medial 4 digits

Question 21

Attachment of flexor pollicis longus

Answer 21

Anterior surface of radius and interosseous membrane to palmar base of distal phalanx of thumb

Question 22

Name the superficial muscles of the posterior forearm

Answer 22

Extensor: digitorum, carpi ulnaris, digiti minimi, carpi radialis brevis, carpi radialis longus
Brachioradialis

Question 23

What is the innervation of the superficial muscles of the posterior forearm?

Answer 23

Radial nerve

Extensor carpi radialis brevis (deep branch of radial nerve)

Question 24

Name the deep muscles of the posterior forearm

Answer 24

Supinator
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
Extensor indices

Question 25

What is the innervation to the deep muscles of the posterior forearm?

Answer 25

Radial nerve

Question 26

What is the arteries supply to the deep muscles of the posterior forearm?

Answer 26

Posterior interisseous artery

Question 27

What is the arterial supply to the supinator?

Answer 27

Radial recurrent artery and posterior interosseous artery

Question 28

Action of the supinator

Answer 28

Supinates forearm

Question 29

Action of the extensor carpi radialis bravis and extensor carpi radialis longus

Answer 29

Extends and abducts hand at wrist

Question 30

Action of extensor carpi ulnaris

Answer 30

Extends and adducts hand at wrist

Question 31

Action of extensor digits minimi

Answer 31

Extends 5th digit

Question 32

Action of extensor digitorum

Answer 32

Extends medial four digits and assists in wrist extension

Question 33

Action of brachioradialis

Answer 33

Weak flexion of forearm when forearm is in midprone

Question 34

Action of abductor pollicis longus

Answer 34

Abducts and extends thumb at carpometacarpal joint

Question 35

Action of extensor pollicis brevis

Answer 35

Extends proximal phalanx of thumb and CMC joint

Question 36

Action of extensor pollicis longus

Answer 36

Extends distal phalanx of thumb at interphalangeal and metacarpophalangeal joints

Question 37

Action of extensor inidicis

Answer 37

Extends 2nd digit and helps extend the hand at the wrist

Question 38

Attachment of extensor digitorum

Answer 38

Lateral epicondyle of humerus to extensor expansion of medial 4 digits

Question 39

Attachment of extensor carpi ulnaris

Answer 39

Lateral epicondyle of humerus and posterior border of ulna to dorsal base of 5th metacarpal

Question 40

Attachment of extensor digiti minimi

Answer 40

Lateral epicondyle of humerus to extensor expansion of 5th digit

Question 41

Attachment of extensor carpi radialis brevis

Answer 41

Lateral epicondyle of humerus to dorsal base of 3rd metacarpal and slip to 2rd metacarpal

Question 42

Attachment of extensor carpi radialis longus

Answer 42

Distal third of lateral supracondylar ridge of humerus to dorsal base of 2nd metacarpal and slip to 3rd metacarpal

Question 43

Attachment of brachioradialis

Answer 43

Proximal 2/3 of lateral supracondylar ridge of humerus to lateral side of distal end of radius

Question 44

Attachment of supinator

Answer 44

Lateral epicondyle of humerus, supinator crest of ulna to lateral, posterior and anterior surfaces of proximal third of radius

Question 45

Attachment of abductor pollicis longus

Answer 45

Posterior surface of ulna, radius and interosseous membrane to base of 1st metacarpal

Question 46

Attachment of extensor pollicis brevis

Answer 46

Posterior surface of radius and interosseous membrane to dorsal base of proximal phalanx of thumb

Question 47

Attachment of extensor pollicis longus

Answer 47

Posterior surface of middle third of ulna, interosseous membrane to dorsal base of distal phalanx of thumb

Question 48

Attachment of extensor indicis

Answer 48

Posterior surface of ulna, interosseous membrane to extensor expansion of 2nd digit