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Y Anatomy I > Muscles: Upper Limb > Flashcards

Muscles: Upper Limb Flashcards

1
Q

8

A

Antebrachial fascia and tendon of palmaris longus muscle

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2
Q

2

A

2 Bicipital aponeurosis

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3
Q

3

A

Brachioradialis muscle

origin: lat. supracondylar ridge humerus
insertion: radial styloid process
artery: radial reccurent artery
innervation: radial nerve
action: flexes elbow

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3
Q

28

A

28 Carpal tunnel (canalis carpi, probe)

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4
Q

4

A

Flexor carpi radialis muscle

origin: medial epicondyle humerus (comm. flex. tendon)
insertion: base of 2nd/3rd metacarpals
artery: radial artery
innervation: median nerve
action: flexion/abduction of wrist

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5
Q

6

A

6 Flexor digitorum superficialis muscle

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6
Q

7

A
  • *Median nerve**
  • only nerve to pass through carpal tunnel

innervates all of the flexors in the forearm except flexor carpi ulnaris and that part of flexor digitorum profundus that supplies the 2nd and 3rd digits

Pronator teres
Flexor carpi radialis
Palmaris longus

Flexor digitorum superficialis muscle

Flexor digitorum profundus (only the lateral half)
Flexor pollicis longus
Pronator quadratus

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7
Q

5

A

5 Radial artery

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7
Q

18

A

Palmaris longus muscle

origin: medial epicondyle humerus (comm. flex. tendon)
insertion: palmar aponeurosis
artery: ulnar artery
nerve: median nerve
action: flexes wrist

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8
Q

21 (tendon)

A

21 Tendon of flexor carpi ulnaris muscle

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9
Q

20

A

20 Ulnar artery

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10
Q

23

A

23 Abductor digiti minimi muscle

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11
Q

26

A

Brachialis muscle

Origin
anterior surface of the humerus, particularly the distal half
Insertion
coronoid process and the tuberosity of the ulna
Artery
radial rartery
Nerve
musculocutaneous nerve (C5, C6)
Actions

flexion at elbow joint

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12
Q

What are the deep flexors of the forearm in radioulnar order (based on origin)?

What are they all innervated by?

What artery supplies all of them?

A
  1. flexor pollicis longus
  2. flexor digitorum profundus
  3. pronator quadratus
  • median nerve (anterior interosseous branch)
  • anterior interosseous artery
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13
Q

7

A

extensor carpi ulnaris

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14
Q

19

A

Flexor carpi ulnaris muscle

origin:

  • humeral head: medial epicondyle humerus (comm. flex. tendon)
  • ulnar head: medial margin on olecranon

insertion: pisiform, hamulus, metacarpal V
artery: ulnar artery
innervation: ulnar nerve
action: flexion/adduction of wrist

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15
Q

33

A

33 Flexor digiti minimi brevis muscle

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16
Q

40

A

Flexor digitorum profundus muscle

origin: proximal 3/4 of anteromedial ulnar shaft, inteross. membrane, deep fascia
insertion: base of distal phalanges
artery: anterior interosseous artery
nerve: median nerve (ant. inteross. branch), ulnar nerve
action: flexes hand and interphal. joints

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17
Q

27

A

Flexor pollicis longus muscle

origin: middle 2/4 radial shaft and inteross. membrane
insertion: base of distal phalanx of thumb
artery: anterior interosseous artery
innervation: median nerve (ant. inteross. branch)
action: flexes thumb

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17
Q

30

A

Flexor digitorum superficialis muscle

origin: medial epicondyle humerus
insertion: anterior base of middle phalanges II-V
artery: ulnar artery
innervation: median nerve
action: flexes fingers (prox. interphal. joint)

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18
Q

17

(what part of the muscle)

A

17 Humeral head of pronator teres muscle

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19
Q

32

A

32 Opponens digiti minimi muscle

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20
Q

28

A

22 Palmaris brevis muscle

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21
Q

39

A

Pronator teres muscle

origin: medial epicondyle humerus (comm. flex. tendon)
insertion: middle lateral surface of radial shaft
artery: ulnar and radial arteries
innervation: median nerve
action: pronates forearm

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22
Q

What are the superficial flexors in radioulnar order (based on their proximal ends)?

What is their common origin?

What nerve innervates all of them but one?

What artery supplies all of them but one?

A
  1. Pronator teres
  2. Flexor carpi radialis
  3. Palmaris longus
  4. Flexor carpi ulnaris
  5. Flexor digitorum superficialis
  • all originate from common flexor tendon which attaches to medial epicondyle of humerus
  • median nerve innervates all but FCU
  • ulnar artery supplies all but FCR
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23
Q

6

A

Supinator muscle
posterior and deep, but can be visible from anterior point of view

  • origin:* supinator crest of ulna, lateral humeral epicondyle, radial collateral ligament
  • insertion*: radius, btwn radial tuberosity and attachment of pronator teres

deep branch of radial nerve

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24
Q

38

A

38 Tendon of flexor carpi radialis muscle

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25
Q

29

(more of a posterior muscle)

A

29 Triceps brachii muscle

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26
Q
A
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27
Q

3

A

Anconeus muscle
small & posterior, some consider to be a part of triceps brachii

  • origin:* lateral epicondyle of humerus
  • insertion*: proximal 1/4th ulna, lateral to olecranon

extension, tenses elbow joint

radial nerve

deep brachial artery

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27
Q

16

A

16 Abductor pollicis longus muscle

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28
Q

12

A

12 Brachialis muscle

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29
Q

15

A

Extensor carpi radialis brevis muscle

origin: lateral epicondyle humerus (comm. ext. tendon)
insertion: posterior base 3rd metacarpal
artery: radial artery
innervation: radial nerve (deep branch)
action: extend/abduct hand at wrist

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30
Q

14

A

14 Extensor carpi radialis longus muscle

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31
Q

6

A

6 Extensor carpi ulnaris muscle

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32
Q

8

A

8 Extensor digiti minimi muscle

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33
Q

7

A

7 Extensor digitorum (communis) muscle

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34
Q

17

A

17 Extensor pollicis brevis muscle

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34
Q

17

A

17 Extensor pollicis longus muscle

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35
Q

1

(septum)

A

1 Lateral intermuscular septum

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36
Q

6

(deep)

A

6 Supinator muscle

37
Q

2 (tendon)

A

2 Tendon of triceps brachii muscle

37
Q

1

A

1 Triceps brachii muscle

39
Q

11

A

11 Abductor pollicis brevis muscle

40
Q

25

coverings

A

25 Digital fibrous sheaths of tendons of flexor digitorum muscle

41
Q

9

A

Third and fourth dorsal interosseous muscles

42
Q

19

A

19 Extensor indicis muscle

43
Q

21

A

21 First dorsal interosseous muscle

44
Q

41

A

41 Lumbrical muscles

45
Q

12

A

12 Palmar aponeurosis

46
Q

18

A

18 Tendon of extensor pollicis longus muscle

47
Q

19

A

19 Tendons of both extensor carpi radialis longus
and extensor carpi radialis brevis muscles

48
Q

9

A

9 Extensor retinaculum

49
Q

12

A

12 Intertendinous connections

50
Q

10

A

10 Tendons of extensor digiti minimi muscle

51
Q

11

A

11 Tendons of extensor digitorum muscle

53
Q

13

A

13 Superficial head of flexor pollicis brevis muscle

55
Q

10

A

10 Tendons of extensor digitorum muscle (cut)

56
Q

10

A

10 Tendon of extensor pollicis brevis muscle

58
Q

43

A

43 Tendons of flexor digitorum profundus muscle having passed through the divided tendons of the flexor digitorum superficialis muscle

59
Q

34

A

34 Tendons of flexor digitorum superficialis muscle

60
Q

42

A

42 Tendons of flexor digitorum profundus muscle

61
Q

24

A

24 Transverse fasciculi of palmar aponeurosis

63
Q

What is the proper anatomical name of the “armpit” and what are its four walls??

A

Axillary Fossa

  • medial: serratus anterior
  • lateral: humerus + arm muscles
  • anterior: pectoralis major + minor
  • posterior: latissimus doris + teres major
63
Q

What type of joint is the shoulder?

What two bone features make it up?

What movements does it allow?

A
  • ball and socket
  • head of humerus and glenoid cavity of scapula

movements:

  • medial/lateral rotation
  • abduction/adduction
  • circumduction (combo of abd/add + antflx/retflx)
  • anteflexion/retroflexion
65
Q

13

A

Pectoralis major muscle

origins:

  • clavicular head: anteromedial clavicle
  • sternocostal head: anterior sternum. costal cartilages, external oblique aponeurosis

insertion: intertubercular sulcus, lateral lip
artery: pectoral branch of thoracoacromial artery
innervation: lateral and medial pectoral nerves
action: adducts/medially rotates humerus, draws scapula anterior/inferior

66
Q

What are the 4 muscles of the rotator cuff (viewed laterally, from front, counterclockwise to back) ?

What is the rotator cuff’s function?

A
  1. Subscapularis
  2. Supraspinatus
  3. Infraspinatus
  4. Teres Minor
  • function to keep humeral head in glenoid cavity and control medial and lateral humeral rotation
66
Q

What is the bottom uncolored space called?

What does it contain (numbers 4 and 5)?

What are its borders (numbers 6, 7 and 8)?

A

Triceps Hiatus

- contains Radial Nerve (4) and Deep Brachial Artery (5)

Borders:

  • lateral: Humerus (6)
  • medial: Long Head of Triceps (7)
  • superior: Teres Major (8)
68
Q

18

(not a muscle)

A

Axillary artery

69
Q

8

A

Biceps brachii muscle

origins:

  • short head: coracoid process
  • long head: supraglenoid tubercle

insertion: radial tuberosity
artery: brachial artery
innervation: musculocutaneous nerve
action: flexes elbow, supinates forearm

70
Q

16

A

Tendon of biceps brachii muscle

insertion: radial tuberosity

71
Q

26

A

Tendon of short head of biceps bachii muscle

origin: coracoid process of scapula

72
Q

17

A

Bicipital aponeurosis

  • broad aponeurosis of biceps brachii located in cubital fossa
  • separates superficial from deep structures in fossa
73
Q

24

A

Brachial artery and median nerve

74
Q

9

A

Brachialis muscle

origin: anterior humerus, just below deltoid insertion
insertion: ulnar tuberosity
innervation: mostly musculocutaneous nerve, partly also radial nerve
action: flexes arm at elbow joint

76
Q

27

A

Coracobrachialis muscle

origin: coracoid process of scapula
insertion: medial humerus
artery: brachial artery
nerve: musculocutaneous nerve
action: adducts humerus

77
Q

10

A

Brachialis

78
Q

entire colored portion

A

Deltoid Muscle

origins:

  • scapular part: spine of scapula
  • acromial part: acromion
  • clavicular part: anterosuperior lateral clavicle

insertion: deltoid tuberosity
artery: thoracoacromial, anterior and poster humeral circumflex arteries
innervation: axillary nerve
actions: shoulder abduction, flexion and extension

80
Q

1

A

Acromial part of deltoid muscle (central fibers)

origin: acromion
action: shoulder abduction

81
Q

6

A

Clavicular part of deltoid muscle (anterior fibers)

origin: anterior border/superior surface of lateral 1/3 of clavicle
action: shoulder abduction, assists pec major in shoulder flexion

82
Q

2

A

Scapular part of deltoid muscle (posterior fibers)

origin: spine of scapula

83
Q

7

What is it? What vein passes through it?

A

Deltopectoral groove

  • cephalic vein passes through
84
Q

15

A
  • *Lateral intermuscular septum**
  • connective tissue sheath separating anterior flexor compartment from posterior extensor compartment of upper arm
84
Q

28

A

Distal biceps brachii muscle and its tendon

insertion: radial tuberosity

85
Q

21

A

Latissimus dorsi muscle

origin: spinous processes T7-L5, thoracolumbar fascia, iliac crest, inferior 3-4 ribs, scapular inferior angle
insertion: floor of intertubercular groove of humerus
artery: thoracodorsal artery
innervation: thoracodorsal nerve
action: adducts, extends and internally rotates arm

86
Q

22

A

Medial intermuscular septum

  • connective tissue sheath that separates flexor/extensor compartments of upper arm between humerus and medial side of arm
87
Q
A

Rhomboid major muscle

origin: spinous processes T2-5
insertion: medial border of scapula
artery: dorsal scapular artery
nerve: dorsal scapular nerve
action: retracts scapula, rotates scapula to depress glenoid cavity

89
Q

20

A

Subscapularis muscle

origin: subscapular fossa
insertion: lesser tubercle of humerus
artery: subscapular artery
innervation: upper/lower subscapular nerves
action: internal humeral rotation, shoulder stabilization

91
Q

29

A

Teres major muscle

origin: inferior angle of scapula, posterior side
insertion: intertubercular sulcus, medial lip
artery: subscapular and circumflex scapular arteries
innervation: lower subscapular nerve
actions: medial rotation of humerus, scapular protraction, depresses shoulder

93
Q

3

A

Triceps brachii muscle

origins:

  • long head: infraglenoid tubercle
  • medial head: below radial sulcus
  • lateral head: above radial sulcus

insertion: olecranon process
artery: deep brachial artery

innervations:

  • long head: axial nerve
  • other heads: radial nerve

action: extends forearm and shoulder (long head only)

95
Q

4

A

Tendon of triceps brachii muscle

insertion: olecranon process (connects all 3 heads of triceps)

96
Q

30

A

Long head of triceps brachii muscle

origin: infraglenoid tubercle

97
Q

19

A

Medial head of triceps brachii muscle

origin: below radial sulcus
insertion: olecranon process
innervation: radial nerve
action: extends forearm

31

98
Q
A

14 Flexor retinaculum
17 Capitate bone
18 Trapezium bone and trapezoid bone
19 Radial artery
20 Tendon of flexor muscles
21 First metacarpal bone
22 Median nerve
23 Thenar muscles
24 Hamate bone
25 Hypothenar muscles
26 Ulnar artery and nerve
27 Carpal tunnel (canalis carpi)

99
Q

What is this distal colored muscle?

A

Pronator Quadratus Muscle

origin: medial anterior ulna
insertion: lateral anterior radius
artery: anterior inteross. artery
innervation: median nerve (ant. inteross. branch)
actions: pronates forearm

100
Q

What are the borders of the anatomical snuffbox?

Its other name?

Its contents?

A

lateral/radial border - tendons of abductor pollicis longus and extensor pollicis brevis

medial/ulnar border - tendon of extensor pollicis longus

  • it is also known as the foveola radialis
  • the radial artery and cephalic vein run through it

Y Anatomy I (18 decks)

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