Antebrachium, cubital fossa, elbow (Outline 16)

Question 1

Extrinsic hand muscles

Intrinsic hand muscle

Answer 1

originate on antebrachium and cross the hand ( insertion)

originate/insertion on the hand

Question 2

Fascia of anterbrachial fascia

Answer 2

deep antebrachial fascia

interosseous membrane

Question 3

Superficial Posterior Forearm Muscles?

Answer 3

ECRL (extensor carpi radialis longus)

ECRB (extensor carpi radialis brevis)

Extensor digiti minimi

Extensor digitorum

Extensor carpi ulnaris

Brachioradialis

Question 4

Deep Posterior Antebrachium muscles?

Answer 4

Supinator

Extensor Pollucis longus/ brevis

Abductor pollucis longus

extensor indicis

Question 5

What is the tennis elbow?

Answer 5

inflamation of connective tissue surrounding common extensor origin, causing painful movement of muscles

Question 6

Superficial Anterior Antebrachium Muscles?

Answer 6

Pronator Teres (PT)

Flexor Carpi Ulnaris (FCU)

Flexor Carpi Radialis (FCR)

Palmaris Longus (PL)

Flexor Digitorum Superficialis (FDS)

Question 7

Deep Anterior Antebrachium Muscles?

Answer 7

Pronator Quadratus (PQ)
 Flexor Digitorum Profundus (FDP)

Flexor Pollucis Longus (FPL)

Question 8

What is the vestigial muscle in antebrachium?

Answer 8

palmaris longus

Question 9

BS/NS for Superficial Anterior Antebrachium? Deep Anterior Antebrachium?

Answer 9

Ulnar A / Median N

Anterior Interosseous A / Median N

Question 10

BS/NS for Superficial Posterior Antebrachium? Deep Posterior Antebrachium?

Answer 10

Radial A/ Radial deep branch N

Post Interosseous/ Radial deep branch N

Question 11

Exception of the nerve supply in anterior antebrachium? in posterior antebrachium?

Answer 11

Ulnar N innervate FCU and half of FDP

Radial N innervate ECRL and brachioradialis

Question 12

OIANB of pronator teres

Answer 12

Medial Epicondyle of humerus

Coronoid process of ulna

Middle of lateral radius

Median N

Ulnar A

Question 13

What muscles are equivalent to FCR (flexor carpi radialis)?

Answer 13

Extensor Carpi Radialis Longus

Extensor Carpi Radialis Brevis

Question 14

What muscle is equivalent to flexor carpi ulnaris?

Answer 14

extensor carpi ulnaris

Question 15

Wrist Abduction

Wrist Adduction

Answer 15

Combination of flexor/ extensor carpi radialis

Combination of flexor/extensor carpi ulnaris

Question 16

Where does the brachial a divide? Into what?

Answer 16

at elbow

Radial/ Ulnar A

Question 17

What does radial artery branch off? What does it anastomoses with?

Answer 17

radial recurrent A

posterior collateral branch

Question 18

What does ulnar artery give off?

Answer 18

Common Interosseous A

Ant/Post Ulnar Recurrent A

Question 19

What does common interosseous A give off?

Answer 19

Anterior/ Posterior Interosseous A

Question 20

What does anterior ulnar recurrent A anastamoses with? Post recurrent A?

Answer 20

Inferior Ulnar Collateral

Superior Ulnar Collateral

Question 21

What does Post Interosseous A give off? What does it anastamoses with?

Answer 21

Post Interosseous Recurrent

Posterior Collateral Branch of Brachial Profunda

Question 22

Pathway of radial A

Pathway of ulnar A

Answer 22

travels under brachioradialis along with radial N

between two heads of FCU and FDP

Question 23

Superficial veins in arm? Where does it drain into?

Answer 23

cephalic -> axillary vein

Basilic -> brachial vein

median cubital vein: connect cephalic and basilic

Question 24

What are 3 nerves supply for antebrachium?

Answer 24

median/ ulnar/radial

Question 25

Pathwayf of median N?

Answer 25

pass through cubital fossa, travel between 2 heads of pronator teres, travels between FDP and FDS. Emerge just proximal to wrist and enter hands between FDS and flexor retinaculum

Question 26

Pathway of musculocutaneous

Answer 26

passes through cubital fossa and continues down the antebrachium as LAC

Question 27

Pathway of Ulnar N

Answer 27

goes around medial epicondyle and travels between 2 heads of FCU to supply it and half of FDP

Question 28

Pathway of Radial N Proper?

Answer 28

Radial N split into deep and superficial in cubital fossa. Deep pierce supinator and innervate post anterbrachium. Superficial travels under brachioradialis and innervate skins

Question 29

What are branches of median N?

Question 30

where does the median N and ulna N give off articular branch?

Question 31

What part of nerve is palmar branch? Where does it innervate?

Answer 31

median N cutaneous to lateral palm

Question 32

Cutaneous N of Ulnar N? what does it supply?

Answer 32

dorsal - ulnar side 4-5 palmar - hypothena eminence (little finger area)

Question 33

where does ulna N give off muscular branch? What does it innervate

Answer 33

at forearm FCU and half of FDP (4-5 digits)

Question 34

What does Ulnar N give off?

Answer 34

articular branch muscular branch cutaneous (dorsal/ palmar)

Question 35

Where does median N give off palmar branch?

Answer 35

in antebrachium, proximal to wrist

Question 36

What does cutaneous ulnar N give off? What does each branch innervate?

Answer 36

Dorsal - ulnar side of half 4 and all 5 Palmar - hypothena eminence

Question 37

what cutaneous N doesn't give out to finger?

Answer 37

palmar cutaneous N

Question 38

What are muscles that radial innervates before split into superficial and deep?

Answer 38

brachioradialis ECRL

Question 39

Where are superficial and deep radial N split?

Answer 39

after the elbow

Question 40

If you are injured above the elbow, what damaged and name of injury?

Answer 40

extensor muscles damaged (triceps) its called wrist drop

Question 41

If you damage below the elbow, do you get wrist drop?

Answer 41

No

Question 42

What is the only muscles in antebrachium that flex the digital phalanges joint?

Answer 42

flexor digitorum profundus