Anterior Forearm

Question 1

Flexor Carpi Radialis

Answer 1

Origin: medial epicondyle of humerus
Insertion: base of 2nd metacarpal
Innervation: median n
Action: flexes and abducts hand

Question 2

Pronator Teres Muscle

Answer 2

Origin: medial epicondyle of humerus and coronoid process of ulna
Insertion: middle of lateral surface of radius
Innervation: median nerve
Action: pronates and flexes arm

Question 3

palmaris longus

Answer 3

Origin: medial epicondyle of humerus
Insertion: distal half of flexor retinaculum and palmar aponeurosis
Innervation: median n
Action: flexes hand and tenses palmar aponeurosis

Question 4

flexor carpi ulnaris

Answer 4

Origin: medial epicondyle of humerus, olecranon, and posterior border of ulna
Insertion: pisiform, hook of hamate, 5th metacarpal
Innervation: ulnar n
Action: flexes and adducts hand

Question 5

flexor digitorum superficialis

Answer 5

Origin: medial epicondyle of humerus, coronoid process of ulna, superior half of anterior radius
Insertion: middle phalanges of digits 2-5
Innervation: median n
Action: flexes digits 2-5, weakly flexes hand

Question 6

medial epicondylitis

Answer 6

golfers/baseball elbow
affects flexor-pronator muscles at their origin
clinical features:
history of repetitive stress
pain with resisted pronation or flexion of wrist
possible paresthesia in distribution of ulnar nerve

Question 7

flexor digitorum profundus

Answer 7

Origin: proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane
Insertion: base of distal phalanges of digits 2-5
Innervation: anterior interosseous n from median n (lateral part) and ulnar nerve (medial part)
Action: flexes digits 2-5 and flexes wrist

Question 8

flexor pollicis longus

Answer 8

Origin: anterior surface of radius and adjacent interosseous membrane
Insertion: base of distal phalanx of pollex
Innervation: anterior interosseous n from median n
Action: flexes pollex (1st digit) and weak flexion of wrist

Question 9

pronator quadratus

Answer 9

Origin: distal 1/4 anterior surface of ulna
Insertion: distal 1/4 anterior surface of radius
Innervation: anterior interosseous n from median n
Action: pronates forearm, deep fibers bind radius and ulna

Question 10

radial artery

Answer 10

passes along lateral aspect of forearm

Question 11

ulnar artery

Answer 11

passes along medial aspect of forearm

Question 12

where does the brachial artery branch into the radial and ulnar arteries

Answer 12

apex of the cubital fossa

Question 13

branch of the radial artery

Answer 13

radial recurrent artery

Question 14

ulnar artery branches

Answer 14

1. anterior ulnar recurrent
2. posterior ulnar recurrent
3. common interosseous
   a. anterior interosseous
   b. posterior interosseous
4. recurrent interosseous

Question 15

elbow anastomosis artery sets

Answer 15

1. middle collateral and recurrent interosseous
2. radial collateral and radial recurrent
3. inferior ulnar collateral and anterior ulnar recurrent
4. superior ulnar collateral and posterior ulnar recurrent

Question 16

medial nerve

Answer 16

anterior interosseous n and palmar branch

Question 17

ulnar nerve

Answer 17

dorsal branch and palmar branch

Question 18

radial nerve

Answer 18

superficial branch and deep branch

Question 19

C8 tests what action

Answer 19

ulnar deviation

Question 20

contents of carpal tunnel

Answer 20

4 flexor digitorum superficialis tendons, 4 flexor digitorum profundus tendons, 1 flexor pollicis longus tendon, median nerve

Question 21

what causes carpal tunnel syndrome

Answer 21

compressed median nerve

Question 22

flexor

Answer 22

flexion of the joint that the muscle crosses

Question 23

pronator

Answer 23

pronation at the joint

Question 24

carpi

Answer 24

carpal or metacarpal bones so likely inserting on carpal or metacarpal bones

Question 25

digitorum

Answer 25

digits so likely inserting on phalanges

Question 26

pollicis

Answer 26

1st digit/thumb

Question 27

radialis

Answer 27

on radial side of forearm so it will abduct

Question 28

ulnaris

Answer 28

on ulnar side of forearm so it will adduct

Question 29

contents of cubital fossa

Answer 29

lateral to medial:
TAN
tendon of biceps brachii
brachial artery
median nerve

Question 30

boundaries of cubital fossa

Answer 30

superiorly: medial and lateral epicondyles
medially: pronator teres m
laterally: brachioradialis m
floor: brachialis and supinator muscles
roof: brachial and antebrachial fascia and bicipital aponeurosis