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Anatomy 3401 > Anterior Forearm Muscles > Flashcards

Anterior Forearm Muscles Flashcards

1
Q

Superficial Arm Muscles

A

Pronator Teres
Flexor Carpi Ulnaris
Palmaris Longus
Flexor Carpi Ulnaris

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2
Q

Common Flexor origin

A

Medial epicondyle of the humerus

  • crosses the elbow, involved with flexion of the arm
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3
Q

Pronator teres origin

A

CFO

ulna - coronoid process

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4
Q

Pronator teres insertion

A

Radius - middle of lateral surface

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5
Q

Pronator teres innervation

A

median nerve

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6
Q

Pronator teres action

A

Pronation of arm

weak flexion at the elbow

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7
Q

Flexor Carpi Radialis origin

A

CFO

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8
Q

Flexor Carpi Radialis insertion

A

base of 2nd metacarpal

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9
Q

Flexor Carpi Radialis innervation

A

median nerve

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10
Q

Flexor Carpi Radialis action

A

flexion at the wrist

abduction of hand

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11
Q

Palmaris Longus origin

A

CFO

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12
Q

Palmaris Longus insertion

A

Palmer apneurosis

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13
Q

Palmaris Longus innervation

A

median nerve

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14
Q

Palmaris Longus action

A

flexion at the wrist

weak flexion at the elbow

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15
Q

Flexor Carpi Ulanris origin

A

CFO
Olecranon Process
Ulna: posterior border

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16
Q

Flexor Carpi Ulanris insertion

A

Pisiform Bone
Hook of hamate
base of 5th metacarpal

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17
Q

Flexor Carpi Ulanris innervation

A

** Ulnar Nerve

found deep to this muscle

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18
Q

Flexor Carpi Ulanris action

A

flexion of the wrist

adduction of the hand

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19
Q

Intermediate group of anterior forearm muscles

A

Flexor digitorum superficialis

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20
Q

Flexor digitorum superficialis origin

A

CFO
** Ulna Coronoid Process
Radius anterior oblique line

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21
Q

Flexor digitorum superficialis insertion

A

shafts of middle phalanges of medial 4 digits

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22
Q

Flexor digitorum superficialis innervation

A

median nerve

23
Q

Flexor digitorum superficialis action

A

flexion of wrist
flexion of metacarpophalangeal and proximal interphalageal joints of medial 4 digits
weak flexion of elbow

24
Q

Deep anterior forearm muscles

A

flexor digitorum profundus
flexor pollicis longus
pronator quadratus

25
Q

flexor digitorum profundus origin

A

Ulna upper portion anterior and medial surfaces

adjoining interosseus membrane

26
Q

flexor digitorum profundus insertion

A

base of distal phalanges of medial 4 digits

27
Q

flexor digitorum profundus innervation**

A

Medial half: ulnar nerve

Lateral half: anterior interosseus nerve (branch of the median nerve)

28
Q

flexor digitorum profundus action

A 
Flexion of:
wrist
metacarpopholangeal joints
proximal interphalangeal joints
distal interphalangeal joints
29
Q

Flexor pollicis longus origin

A

radius middle of anterior surface

adjoining interosseus membrane

30
Q

Flexor pollicis longus insertion

A

base of distal phalanx of thumb

31
Q

Flexor pollicis longus innervation

A

Anterior interosseus nerve

Branch of median nerve

32
Q

Flexor pollicis longus action

A 
abduction of wrist
flexion of:
carpometacarpal joint
metacarpophalangeal joint
interphalangeal joint
33
Q

Pronator Quadratus origin

A

Ulna distal 1/4 of anterior surface

34
Q

Pronator Quadratus insertion

A

radius distal 1/4 of anterior surface

35
Q

Pronator Quadratus innervation

A

anterior interosseus nerve (branch of median nerve)

36
Q

Pronator Quadratus action

A

pronate forearm

37
Q

Muscles innervated by the ulan nerve

A

Flexor Carpi Ulnaris

Lateral half of flexor digitorum profundus

38
Q

Location of median nerve

A

Deep to flexor carpi ulnaris

39
Q

Innervated by anterior interosseus nerve

A

Deep group of muscles of the forearm:

Lateral 1/2 Flexor digitorum profundus
Flexor Pollicis Longus
Pronator Quadratus

40
Q

Cubital Fossa superior border

A

Imaginary line connecting ‘epicondyles’ of the humerus

41
Q

Cubital Fossa medial border

A

pronator teres

42
Q

Cubital Fossa lateral border

A

brachioradialis

43
Q

Cubital Fossa roof

A

deep fascia

bicipital apneurosis

44
Q

Cubital Fossa floor

A

brachialis (inserts on ulna)

supinator

45
Q

Radial nerve location

A

deep to brachioradialis

46
Q

Deep branch of the radial nerve pierces supinator, becomes

A

posterior interosseus nerve

47
Q

Nerve deep to biceps brachii in the cubicle fossa

A

musculocutaneous nerve

48
Q

Artery in cubital fossa

A

Brachial artery
- bifurcates here

Radial and ulnar artery

49
Q

Median and Ulnar nerve relative to humerus

A

median: in front
ulnar: behind

50
Q

Median and Ulnar nerve relative to flexor retinaculum

A

median: below
ulnar: above

51
Q

Ending of superficial branch of radial nerve

A

cutaneously

52
Q

Deep branch of radial nerve pierces

A

supinator

- becomes Posterior Interosseus

53
Q

Posterior interoseus nerve found? travelling with?

A

Deep to extensor digitorum (reveals supinator

Posterior interosseus artery (branch of the ulnar artery)

Anatomy 3401 (17 decks)

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