Elbow/Cubital Fossa/Forearm

Question 1

the elbow joint has ___ articulations and ___ movements

Answer 1

three; two

Question 2

proximal radio-ulnar joint allows for ___ and ____

Answer 2

pronation; supination

Question 3

the elbow joint has articular surfaces covered in ____, a ____ and a ____ membrane

Answer 3

hyaline cartilage; synovial membrane; fibrous

Question 4

elbow ligaments:

Answer 4

radial collateral ligament, ulnar collateral ligament, and anular ligament

Question 5

radial collateral ligament (RCL) resists ___ forces

Answer 5

varus (from midline)

Question 6

ulnar collateral ligament (UCL) resists ____ forces

Answer 6

valgus (toward midline)

Question 7

when radial head subluxates or dislocates from the anular ligament ; muscle pulls radial head superiorly

Answer 7

nursemaid elbow

Question 8

boundaries of the cubital fossa

Answer 8

lateral: brachioradialis m.
medial: pronator teres m.
base: imaginary line connecting medial and lateral epicondyles
floor: brachialis m.

Question 9

contents of the cubital fossa

Answer 9

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

Question 10

the median n. leaves the cubital fossa by leaving through the 2 heads of ___

Answer 10

pronator teres

Question 11

roof of the cubital fossa

Answer 11

skin, superficial fascia, superficial veins, deep fascia, and the bicipital aponeurosis

Question 12

mm of the anterior compartment of the forearm will:

Answer 12

flex the wrist, flex the digits, and pronate the hand

Question 13

mm of the posterior compartment of the forearm will:

Answer 13

extend the wrist, extend the digits, and supinate the hand

Question 14

the distal radio-ulnar joint is between the ____ and ____

Answer 14

ulnar notch of the radius; head of the ulna

Question 15

the interosseous membrane consists of ____

Answer 15

dense regular connective tissue

Question 16

all mm. of the ant compartment of the forearm are innervated by the ____ except for ____and the medial half of _____

Answer 16

median n.; flexor carpi ulnaris; flexor digitorum profundus

Question 17

superficial mm. of the forearm

Answer 17

pronator teres, flexor carpi radialis, palmaris longus, flexor carpi ulnaris

Question 18

A and inn. of pronator teres

Answer 18

pronate the forearm; median n.

Question 19

pronator teres has 2 heads: one on the ___ and the other on the ____

Answer 19

medial epicondyle; coronoid process of the ulna

Question 20

A and inn of flexor carpi radialis

Answer 20

flexion and abduction of the wrist; median n.

Question 21

A and inn of palmaris longus

Answer 21

flex wrist and tense aponeurosis; median n.

Question 22

two heads of flexor carpi ulnaris

Answer 22

medial epicondyle of the humerus and olecranon of the ulna

Question 23

A and inn of flexor carpi ulnaris

Answer 23

flex and adduct wrist; ulnar n.

Question 24

A and inn of flexor digitorum superficialis

Answer 24

quick flexion of proximal interphalangeal joints (PIPs) and metacarpophalangeal joints (MPs) of digits 2-5 ; median n.

Question 25

A and inn of flexor digitorum profundus

Answer 25

slow flexion of distal interphalangeal joints (DIPs) and MPs of digits 2-5 ; digits 2-3 innervated by median n. and digits 4-5 innervated by ulnar n.

Question 26

A and inn of flexor pollicis longus

Answer 26

flex the interphalangeal and MP joints of the thumb; median n.

Question 27

A and inn of pronator quadratus

Answer 27

pronation; median n.

Question 28

structures that pass through the carpal tunnel

Answer 28

tendons of flexor digitorum superficialis (4), tendons of flexor digitorum profundus (4), tendon of flexor pollicis longus (1), and the median nerve

Question 29

posterior forearm - superficial mm.

Answer 29

``` anconeus brachioradialis extensor carpi radialis longus extensor carpi radialis brevis extensor digiti minimi extensor carpi ulnaris ```

Question 30

posterior forearm - deep mm.

Answer 30

``` supinator abductor pollicis longus extensor pollicis longus extensor pollicis brevis extensor indicis ```

Question 31

A and inn of brachioradialis

Answer 31

accessory flexor at elbow; radial n.

Question 32

A and inn of anconeus

Answer 32

accessory extensor of the elbow; radial n.

Question 33

A and inn of extensor carpi radialis longus

Answer 33

extension and abduction of the wrist; radial n.

Question 34

A and inn of extensor carpi radialis brevis

Answer 34

extension and abduction of the wrist; radial n.

Question 35

A and inn of extensor digitorum

Answer 35

extends digits 2-5; radial n.

Question 36

A and inn of extensor digiti minimi

Answer 36

extend digit 5; radial n.

Question 37

A and inn of extensor carpi ulnaris

Answer 37

extend and adduct wrist; radial n.