Anterior Forearm

Question 1

what group of muscles in the anterior formarm crosses the elbow

Answer 1

superficial

Question 2

does the superficial anterior forearm group act upon the elbow joint

Answer 2

no (not flexion or extension)

Question 3

Most of the anterior forearm muscles are innervated by the

Answer 3

median nerve C6-T1

Question 4

Ulnar nerve controls what in the anterior forearm

Answer 4

1. FCU

2. (medial side) FDP

Question 5

inflammation of common flexor origin and periosteum of the medial epicondyle

Answer 5

Medial epicondylitis (“Golfer’s elbow”):

Question 6

common origin of the superficial flexors of the forearm

Answer 6

♣ Medial Epicondyle of the Humerus

Question 7

pronator teres insertion

Answer 7

mid shaft of the radius

Question 8

Flexor carpi radialis insertion

Answer 8

radial (lateral) side of hand

Question 9

Flexor carpi ulnaris insertion

Answer 9

ulnar (medial) side of hand

Question 10

Palmaris longus insertion

Answer 10

palmar aponeurosis

Question 11

what muscle is absent in 15%

Answer 11

Palmaris longus

Question 12

Flexor digitorum superficialis (FDSF) insertion

Answer 12

middle phalanges of digits 2-5

Question 13

Flexor digitorum superficialis (FDSF) actions

Answer 13

flex digits 2-5 (MCP and PIP joints), flex wrist joint

Question 14

Flexor digitorum profundus (FDP)

insertion

Answer 14

distal phalanges of digits 2-5

Question 15

Flexor digitorum profundus (FDP) action

Answer 15

flex digits 2-5 (MCP, PIP, and DIP joints), flex wrist joint

Question 16

Flexor digitorum profundus (FDP) innervation

Answer 16

• Lateral (radial) ½ (to digits 2, 3) = median nerve

- Medial (ulnar) ½ (to digits 4, 5) = ulnar nerve

Question 17

flex thumb (CMC, MCP and IP joints), flex wrist joint

Answer 17

Flexor pollicis longus

Question 18

Pronator quadratus insertion

Answer 18

distal radius

Question 19

forms the roof of the carpal tunnel

Answer 19

The flexor retinaculum

Question 20

Contents of the carpal tunnel (4 items) 9 tendons 1 nerve

Answer 20

median nerve
tendons of flexor digitorum superficialis
tendons of flexor digitorum profundus
tendon of flexor pollicis longus

Question 21

Contains the 3 thenar muscles acting on the thumb

Answer 21

♣ Thenar compartment

Question 22

o Contains the adductor pollicis muscle

Answer 22

♣ Adductor compartment

Question 23

o Untreated infections of the (what) can spread through the carpal tunnel and into the anterior compartment of the forearm

Answer 23

central compartment

Question 24

Most of the intrinsic muscles are innervated by the

Answer 24

Ulnar nerve

Question 25

Innervation levels in the hand regardless of the nerve

Answer 25

C8-T1

Question 26

what nerve innervates the thenar eminence

Answer 26

recurrent branch of the median nerve

Question 27

♣ Hypothenar Muscles

Answer 27

* Abductor digiti minimi * Flexor digiti minimi brevis * Opponens digiti minimi

Question 28

Lumbricals originate where

Answer 28

tendons of flexor digitorum profundus

Question 29

Lumbricals Insert where

Answer 29

extensor expansions of digits 2-5

Question 30

flex MCP joints and extend PIP & DIP joints of digits 2-5

Answer 30

(what is the action of the lumbricles)

Question 31

The lumbricals to digits 2 & 3 are innervated by the , (?) while lumbricals to digits 4 & 5 are innervated by the (?) nerve.

Answer 31

- median | - Ulnar

Question 32

PAD how many

Answer 32

3

Question 33

DAB how many

Answer 33

4

Question 34

How less DAB vs PAD

Answer 34

can't ADD digit 3

Question 35

Does NOT innervate | structures in the arm (what nerve)

Answer 35

median

Question 36

o Courses through the cubital fossa | what nerve

Answer 36

median

Question 37

Test: pad-to-pad opposition | Cutaneous sensation tip of digit 2

Answer 37

proximal median

Question 38

Can be compressed here (cubital tunnel syndrome)

Answer 38

ulnar nerve

Question 39

all interossi are innervated by what nerve

Answer 39

ulnar

Question 40

o Brachial artery gives rise to the ulnar and radial arteries in the

Answer 40

cubital fossa

Question 41

Give the beakdown of ulnar arteries

Answer 41

o Ulnar artery recurrent arteries • common interosseous artery, which divides into: ◊ Anterior interosseous ◊ Posterior interosseous artery • superficial palmar arch which provides primary blood supply to the common and proper digital arteries • Ulnar artery anastomoses with the radial artery via the superficial and deep palmar arches

Question 42

Passes into wrist superficial to flexor retinaculum

Answer 42

Ulnar artery

Question 43

Radial artery break down

Answer 43

* Gives rise to radial recurrent artery (anastomoses around elbow) * Supplies anterior and posterior compartment muscles on the lateral aspect of the forearm * The pulse rate is usually measured on the radial artery at the wrist, where it lies lateral to the tendon of flexor carpi radialis * Gives rise to deep palmar arch which provides modest blood supply to the digital arteries (exception: main blood supply to the thumb)