Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

A&P > Upper Extremity Anatomy > Flashcards

Upper Extremity Anatomy Flashcards

1
Q

Brachial Plexus - Supraclavicular parts

A

A. Ventral rami C5-T1

B. Trunks
1. upper: C5-C6

2. middle:  C7
3. lower:  C8-T1
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Brachial Plexus - Deep to clavicle

A

A. Divisions—from each trunk

1. anterior—supplies flexors of upper extremity
2. posterior—supplies extensors of upper extremity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Brachial Plexus - Infraclavicular parts

A

A. Cords—named in relation to axillary artery
1. lateral—upper and middle trunk anterior divisions

2. medial—lower trunk anterior division
3. posterior—all 3 trunks posterior divisions

B. Terminal branches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Brachial Plexus - Infraclavicular parts - Terminal branches

Lateral cord

A
  1. Musculocutaneous n. supplies flexor compartment of arm

2. Median n. contribution—flexor compartment of forearm, thenar mm, lumbricals 1 & 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Brachial Plexus - Infraclavicular parts - Terminal branches

Medial cord

A
  1. Ulnar n. supplies flexor carpi ulnaris, FDP tendons 3&4, rest of intrinsic hand mm
  2. Median n. contribution—flexor compartment of forearm, thenar mm, lumbricals 1 & 2
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Brachial Plexus - Infraclavicular parts - Terminal branches

Posterior cord

A
  1. Axillary n. supplies deltoid m. and teres minor m.

2. Radial n. supplies all extensors of arm and forearm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Superficial back muscles controlling the pectoral girdle

A
  1. Trapezius
  2. Latissimus dorsi
  3. Levator scapulae
  4. Rhomboid major
  5. Rhomboid minor
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Trapezius - superior, middle, & inferior fibers

A

ORIGIN: external occipital protuberance, superior nuchal line,
ligamentum nuchae, spinous processes of C7-T12

INSERTION: lat. 1/3 clavicle, acromion, spine of scapula

INERVATION: CN XI (spinal accessory n)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Latissimus dorsi

A

ORIGIN: spinous processes of T7-T12, thoracolumbar fascia,iliac crest, ribs 9-12

INSERTION: floor of intertubercular groove of humerus

INNERVATION: thoracodorsal n. (C6, C7, C8)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Levator scapulae

A

ORIGIN: posterior tubercles of transverse processes of C1-C4

INSERTION: medial border of scapula

INNERVATION: dorsal scapular n. (C5)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Rhomboid major

A

ORIGIN: spinous processes of T2-T5

INSERTION: medial border of scapula (below spine of scapula)

INNERVATION: dorsal scapular n. (C5)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Rhomboid minor

A

ORIGIN: spinous processes of C7 & T1, and nuchal ligament

INSERTION: medial border of scapula (above spine of scapula)

INNERVATION: dorsal scapular n. (C5)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Anterior chest muscles controlling the pectoral girdle/upper extremity

A
  1. Pectoralis major
  2. Pectoralis minor
  3. Serratus anterior
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Pectoralis major - clavicular head

A

ORIGIN: anterior medial 1/2 of clavicle

INSERTION: intertubercular groove (lateral lip)

INNERVATION: medial and lateral pectoral nn (C5-T1)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Pectoralis major - sternocostal head

A

ORIGIN: sternum, costal cartilages 1-6, ext. abd. oblique apon

INSERTION: intertubercular groove (lateral lip)

INNERVATION: medial and lateral pectoral nn (C5-T1)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Pectoralis minor

A

ORIGIN: ribs 3-5

INSERTION: coracoid process

INNERVATION: medial pectoral n. (C8-T1)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Serratus anterior

A

ORIGIN: external lateral surfaces of ribs 1-8

INSERTION: medial anterior border of scapula

INNERVATION: long thoracic n. (C 5, C6, C7)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Rotator cuff muscles

A
  1. Supraspinatus
  2. Infraspinatus
  3. Teres minor
  4. Subscapularis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Supraspinatus

A

ORIGIN: supraspinous fossa of scapula

INSERTION: greater tubercle of humerus

INNERVATION: suprascapular n. (C5)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Infraspinatus

A

ORIGIN: infraspinous fossa of scapula

INSERTION: greater tubercle of humerus

INNERVATION: suprascapular n. (C5-C6)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Teres minor

A

ORIGIN: middle part of lateral border of scapula

INSERTION: greater tubercle of humerus

INNERVATION: axillary n. (C5-C6)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Subscapularis

A

ORIGIN: subscapular fossa

INSERTION: lesser tubercle of humerus

INNERVATION: upper and lower subscapular nn (C5, C6, C7)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Other muscles controlling the glenohumeral joint

A
  1. Deltoid

2. Teres major

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Deltoid - anterior, middle & posterior pts

A

ORIGIN: lateral 1/3 clavicle, acromion, and spine of scapula

INSERTION: deltoid tuberosity of humerus

INNERVATION: axillary n. (C5-C6)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Teres major

A

ORIGIN: inferior angle of scapula, dorsal surface

INSERTION: intertubercular groove (medial lip)

INNERVATION: lower subscapular n (C6)

ACTION:

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Anterior Arm Compartment

A
  1. Biceps brachii
  2. Brachialis
  3. Coracobrachialis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Biceps brachii

A

ORIGIN: long head- supraglenoid tubercle
short head- tip of coracoid process

INSERTION: radial tuberosity and bicipital aponeurosis

INNERVATION: musculocutaneous n. (C5-C6)

ACTION:

28
Q

Brachialis

A

ORIGIN: anterior, distal humerus

INSERTION: coronoid process & tuberosity of ulna

INNERVATION: musculocutaneous n. (C5-C7)

ACTION:

29
Q

Coracobrachialis

A

ORIGIN: tip of coracoid process of scapula

INSERTION: middle 1/3 of medial surface humerus

INNERVATION: musculocutaneous n. (C5, C6, C7)

ACTION:

**note: musculocutaneous n. pierces through coracobrachialis m.

30
Q

Posterior Arm Compartment

A

Triceps brachii

31
Q

Triceps brachii

A

ORIGIN:

a. long head - infraglenoid tubercle of scapula
b. lateral head - posterior lateral aspect of humerus
c. medial head - posterior medial aspect of humerus

INSERTION: olecranon process

INNERVATION: radial n (C7-C8)

ACTION:

32
Q

Superficial flexor compartment

A
  1. Pronator teres
  2. Flexor carpi radialis
  3. Palmaris longus
  4. Flexor carpi ulnaris
  5. Flexor digitorum superficialis
33
Q

Pronator teres

A

ORIGIN: medial epicondyle of humerus & coronoid process of ulna

INSERTION: middle lateral surface of radius

INNERVATION: median n (C6-C7)

ACTION:

34
Q

Flexor carpi radialis

A

ORIGIN: medial epicondyle of humerus

INSERTION: base of 2nd metacarpal

INNERVATION: median n (C6-C7)

ACTION:

35
Q

Palmaris longus

A

ORIGIN: medial epicondyle of humerus

INSERTION: flexor retinaculum; palmar aponeurosis

INNERVATION: C7-C8

ACTION:

36
Q

Flexor carpi ulnaris

A

ORIGIN:

a. humeral head - medial epicondyle of humerus
b. ulnar head - olecranon; posterior ulna

INSERTION: pisiform, hook of hamate, 5th metacarpal

INNERVATION: ulnar n. (C7-C8)

ACTION:

37
Q

Flexor digitorum superficialis

A

ORIGIN:

a. humeroulnar head - medial epicondyle, MCL, coronoid process
b. radial head - anterior, superior radius

INSERTION: middle phalanges #2-5

INNERVATION: median n. (C7-T1)

ACTION:

38
Q

Deep flexor compartment

A
  1. Flexor digitorum profundus
  2. Flexor pollicis longus
  3. Pronator quadratus
39
Q

Flexor digitorum profundus

A

ORIGIN: medial, anterior ulna; interosseous membrane

INSERTION: bases of distal phalanges #2-5

INNERVATION: 1. medial part by ulnar n. (C8-T1)
2. lateral part by median n. (C8-T1)

ACTION:

40
Q

Flexor pollicis longus

A

ORIGIN: anterior radius; interosseous membrane

INSERTION: base of distal phalanx of thumb

INNERVATION: anterior interosseous n.(median n. C8-T1)

ACTION:

41
Q

Pronator quadratus

A

ORIGIN: distal 1/4 anterior ulna

INSERTION: distal 1/4 anterior radius

INNERVATION: anterior interosseous n.(median n. C8-T1)

ACTION:

42
Q

Superficial extensor compartment

A
  1. Brachioradialis
  2. Extensor carpi radialis longus
  3. Extensor carpi radialis brevis
  4. Extensor digitorum
  5. Extensor digiti minimi
  6. Extensor carpi ulnaris
43
Q

Brachioradialis

A

ORIGIN: lateral supracondylar ridge of humerus

INSERTION: lateral distal radius

INNERVATION: radial n. (C5, C6, C7)

ACTION:

44
Q

Extensor carpi radialis longus

A

ORIGIN: lateral supracondylar ridge of humerus

INSERTION: base of 2nd metacarpal

INNERVATION: radial n. (C6-C7)

ACTION:

45
Q

Extensor carpi radialis brevis

A

ORIGIN: lateral epicondyle of humerus

INSERTION: base of 3rd metacarpal

INNERVATION: deep branch of radial n. (C7-C8)

ACTION:

46
Q

Extensor digitorum

A

ORIGIN: lateral epicondyle of humerus

INSERTION: extensor expansions of digits 2-5

INNERVATION: posterior interosseous n.(radial n. C7-C8)

ACTION:

47
Q

Extensor digiti minimi

A

ORIGIN: lateral epicondyle of humerus

INSERTION: extensor expansion of 5th digit

INNERVATION: posterior interosseous n.(radial n. C7-C8)

ACTION:

48
Q

Extensor carpi ulnaris

A

ORIGIN: lateral epicondyle of humerus; posterior ulna

INSERTION: base of 5th metacarpal

INNERVATION: posterior interosseous n.(radial n. C7-C8)

ACTION:

49
Q

Deep extensor compartment

A
  1. Abductor pollicis longus*
  2. Extensor pollicis brevis*
  3. Extensor pollicis longus*
  4. Extensor indicis
  5. Supinator

**Abductor pollicis longus, extensor pollicis brevis and extensor pollicis longus are the muscular boundaries of the anatomical snuff box.

50
Q

Abductor pollicis longus

A

ORIGIN: posterior ulna, radius, interosseous membrane

INSERTION: base of 1st metacarpal

INNERVATION: posterior interosseous n.(radial n. C7-C8)

ACTION:

51
Q

Extensor pollicis brevis

A

ORIGIN: posterior radius, interosseous membrane

INSERTION: base of proximal phalanx of thumb

INNERVATION: posterior interosseous n.(radial n. C7-C8)

ACTION:

52
Q

Extensor pollicis longus

A

ORIGIN: posterior ulna and interosseous membrane

INSERTION: base of distal phalanx of thumb

INNERVATION: posterior interosseous n.(radial n. C7-C8)

ACTION:

53
Q

Extensor indicis

A

ORIGIN: posterior ulna and interosseous membrane

INSERTION: extensor expansion of 2nd digit

INNERVATION: posterior interosseous n.(radial n. C7-C8)

ACTION:

54
Q

Supinator

A

ORIGIN: lateral epicondyle of humerus, annular ligament, radial collateral ligament, crest of ulna

INSERTION: radius ->lateral, posterior and anterior surfaces

INNERVATION: deep branch of radial n. C6-C8

ACTION:

55
Q

Thenar muscles

A
  1. Abductor pollicis brevis
  2. Flexor pollicis brevis
  3. Opponens pollicis
56
Q

Abductor pollicis brevis

A

ORIGIN: flexor retinaculum, tubercles of scaphoid and trapezium

INSERTION: lateral side of base of proximal phalanx of thumb

INNERVATION: recurrent branch of median n (C8-T1)

ACTION:

57
Q

Flexor pollicis brevis

A

ORIGIN: flexor retinaculum, tubercles of scaphoid and trapezium

INSERTION: lateral side of base of proximal phalanx of thumb

INNERVATION: recurrent branch of median n (C8-T1)

ACTION:

58
Q

Opponens pollicis

A

ORIGIN: flexor retinaculum, tubercles of scaphoid and trapezium

INSERTION: lateral side of 1st metacarpal

INNERVATION: recurrent branch of median n (C8-T1)

ACTION:

59
Q

Adductor compartment

Adductor pollicis

A

ORIGIN:

a. oblique head - bases of 2nd & 3rd metacarpals, and capitate
b. transverse head - anterior surface of body of 1st metacarpal

INSERTION: medial side of base of proximal phalanx of

INNERVATION: deep branch of ulnar n (C8, T1)

ACTION:

60
Q

Hypothenar muscles

A
  1. Abductor digiti minimi
  2. Flexor digiti minimi brevis
  3. Opponens digiti minimi
61
Q

Abductor digiti minimi

A

ORIGIN: pisiform

INSERTION: medial side, base of proximal phalanx of 5th digit

INNERVATION: deep branch of ulnar n (C8, T1)

ACTION:

62
Q

Flexor digiti minimi brevis

A

ORIGIN: hook of hamate and flexor retinaculum

INSERTION: medial side, base of proximal phalanx of 5th digit

INNERVATION: deep branch of ulnar n (C8, T1)

ACTION:

63
Q

Opponens digiti minimi

A

ORIGIN: hook of hamate and flexor retinaculum

INSERTION: medial border 5th metacarpal

INNERVATION: deep branch of ulnar n (C8, T1)

ACTION:

64
Q

Short muscles of hand

A
  1. Lumbricals
  2. Dorsal interosseous
  3. Palmar interosseous
65
Q

Lumbricals

A

ORIGIN:

a. 1 & 2 - lateral 2 tendons of flexor digitorum profundis
b. 3 & 4 - medial 3 tendons of flexor digitorum profundis

INSERTION: lateral sides of extensor expansions of digits 2-5

INNERVATION:

a. median n (C8, T1)
b. deep branch of ulnar n (C8, T1)

ACTION:

66
Q

Dorsal interosseous

A

ORIGIN: adjacent sides of metacarpals

INSERTION: extensor expansions &proximal phalanges 2-4

INNERVATION: deep branch of ulnar n (C8, T1)

ACTION:

67
Q

Palmar interosseous

A

ORIGIN: palmar surfaces of metacarpals 2, 4, 5

INSERTION: extensor expansions of digits, & proximal phalanges of digits 2, 4, 5

INNERVATION: deep branch of ulnar n (C8, T1)

ACTION:

A&P (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions