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Flashcards in Anatomy Deck (225):
1

Discuss superficial fascia

  • located deep from skin and superficial from deep fascia
  • loose connective tissue, lots of fat
  • allows skin and other superficial structures to be mobile
  • serves as a conduit for superficial structures: 
    • superficial veins, superficial lymphatic vessels, cutaneous nerves

2

Differentiate Cephalic and Basilic veins

  • cephalic
    • begins at radial confluence of the dorsal venous network of the hand, crosses the anatomical snuff box - ascends forearm and arm anterolaterally - then at clavipectoral trainagle penetrates deep fascia to join the terminal portion of the axillary vein
    • at the cubital fossa, a communication courses from the cephalic vein, medially, to join the basilic vein, called the medial cubital vein
  • basilic vein
    • begins at the ulnar confluence of the dorsal venous network of the hand - ascends forearm and arm anteromedially - then passes through deep fascia near the junction of the inferior and middle thirds of the arm. 
    • joins veins accompanying the brachial artery to then begin the axillary vein

3

Superficial lymphatics

  • originate from lymphatic plexuses in the skin throughout hand
  • travel with superficial veins
  • numerous
  • some to cubital lymph nodes (proximal to medial epicondyle and medial to the basilic vein
  • some to deltopectoral lymph nodes
  • all eventually drain to deep axillary lymph nodes

4

dermatome consistency on hand and posteriorly

  • C6 - thumb
  • C7 - index
  • C8 - little finger 

 

posteriorly

  • C6 - lateral from elbow
  • C7 - near elbow
  • C8 - medial from elbow

5

peripheral cutaneous nerve distribution

  • median nerve distribution
    • associated with carpal tunnel
  • ulnar nerve distribution
    • associated with ulnar nerve entrapment at the elbow

6

Insertion of Subscapularis

Lesser Tubercle of Humerus

7

Origin of Subscapularis

Subscapular fossa

8

triceps long head origin

infreglenoid tubercle of scapula

9

triceps brachii  insertion

olecranon process of ulna

10

Action of subscapularis

Medially rotates arm

Stablizes shoulder joint

11

Origin of serratus anterior

Lateral surface of ribs 1-9

12

Insertion of serratus anterior

Medial border of scapula

13

triceps brachii blood supply

profunda brachii (deep brachial) artery

14

triceps brachi lateral head origin

proximal and lateral to radial groove of humerus

15

triceps brachii medial head origin

distal and medial to radial groove of humerus

16

Origin of subclavius

Superior surface of distal tip, costal cartilage of 1st rib

17

anconeus insertion

olecranon process of ulna and shaft of ulna

18

Insertion of subclavius

subclavius groove

19

anconeus function

assist in extending the elbow, abducts ulna during pronation

20

anconeus blood supply

profunda brachii and recurrent interosseus arteries

21

innervation of subclavius

Nerve to subclavius

22

action of subclavius

depress clavicle

seat claviccle in sternoclavicular joint

23

origin of perctoralis minor

ribs 3-5

24

coracobrachialis action

flexion and adduction of arm

25

insertion of pectoralis minor

coracoid process of scapula

26

innervation of pectoralis minor

medial pectoral nerve

27

brachialis origin

distal half of anterior surface of humerus

28

brachialis insertion

ulnar tuberosity and coronoid process of ulna

29

action of pectoralis minor

depress

protract

downward rotation of scapula

30

brachialis function

primary flexor of elbow joint

31

brachialis blood supply

radial recurrent artery

32

biceps brachii short head origin

coracoid process of scapula

33

origin of pectoralis major

proximal half of clavicle

lateral margin of sternum and costal cartilage of ribs 1-7

34

biceps brachii insertion

radial tuberosity

35

biceps brachii innervation

musculocutaneous nerve

36

insertion of pectoralis major

lateral margin of the intertubercular groove

37

innervation of pectoralis major

medial and lateral pectoral nerves

38

action of pectoralis major

medial rotation

protraction

elevation

adduction of humerus

39

origin of supraspinatus

supraspinatus fossa

40

insertion of supraspinatus

superior facet of greater tubercle of humerus

41

innervation of supraspinatus

suprascapular nerve

42

action of supraspinatus

abduction of arm

stablize shoulder joint

43

origin of infraspinatus

infraspinatus fossa

44

insertion of infraspinatus

middle facet of greater tubercle of humerus

45

innervation of infraspinatus

suprascapular nerve

46

action of infraspinatus

laterally rotate humerus

stabilize shoulder joint

47

innervation of triceps brachii

radial n.

48

function of triceps brachii

extension of the forearm

49

origin of anconeus

lateral epicondyle of the humerus

50

innervation of anconeus

radial n

51

origin of coracobrachialis

coracoid process of scapula

52

insertion of coracobrachialis

medial surface of mid humerus

53

innervation of coracobrachialis

musculocutaneous nerve

54

blood supply of coracobrachialis

brachial artery

55

innervation of brachialis

musculocutaneous nerve

56

blood supply of brachialis

radial recurrent arteries

57

innervation of subscapularis

upper and lower subscapular nerves

58

innervation of serratus anterior

long thoracic nerve

59

action of serratus anterior

protractor of the scapula

60

origin of teres minor

lateral border of scapula

61

insertion of teres minor

inferior facet of greater tubercle of humerus

62

innervation of teres minor

axillary nerve

63

action of teres minor

laterally rotate humerus

stabilize shoulder joint

64

origin of teres major

posterior surface of the inferior angle of the scapula

65

insertion of teres major

medial lip of intertubercular groove

66

innervation of teres major

lower scapular nerve

67

action of teres major

extends / adducts / medially rotates arm

68

biceps brachii long head origin

supraglenoid tuberosity

69

blood supply biceps brachii

brachial artery

70

origin brachioradialis

lateral supracondylar ridge of humerus

71

insertion brachioradialis

lateral surface fo distal radius

72

innervation of brachioradialis

radial nerve

73

function of brachioradialis

flexion of elbow, small supination role

74

blood supply brachioradialis

radial recurrent artery

75

origin of pronator teres - humeral head

medial epicondyle and medial supracondylar ridge of humerus

76

insertion of pronator teres

lateral surface of radius - midshaft

77

innervation of pronator teres

median nerve

78

function of pronator teres

primary pronator of forearm

79

blood supply of pronator teres

radial and ulnar arteries

80

origin pronator teres- ulnar head

medial side of coronoid process of ulna

81

origin palmaris brevis

medial side of palmar aponeurosis

82

insertion palmaris brevis

skin on medial part of palm

83

innervation palmaris brevis

superficial ulnar nerve

84

function of palmaris brevis

create creases when gripping

85

blood supply palmaris brevis

superficial palmar arch

86

origin abductor pollicis brevis

trapezium

87

insertion of abductor pollicis brevis

radial side of the base of the proximal phalanx of thumb

88

innervation of abductor pollicis brevis

recurrent median n

89

function of abductor pollicis brevis

abducts thumb at CMC joint

90

blood supply of abductor pollicis brevis

superficial palmar branch of radial artery

91

origin of deltoid

lateral 1/3 of clavicle

acromion

spine of scapula

92

insertion of deltoid

deltoid tuberosity of humerus

93

innervation of deltoid

axillary nerve

94

action of deltoid

abducts arm

flexes and medially rotates arm

extends and laterally rotates arm

95

origin of extensor carpi radialis longus

lateral supracondylar ridge of humerus

96

insertion of extensor carpi radialis longus

base of 2nd metacarpal

97

innervation of extensor carpi radialis longus

radial nerve

98

action of extensor carpi radialis

extends and abducts wrist

99

blood supply of extensor carpi radialis longus

radial and radial recurrent artery

100

origin of extensor carpi radialis brevis

common extensor tendon

101

insertion of extensor carpi radial brevis

base of 3rd metacarpal

102

innervation of extensor carpi radialis brevis

deep radial nerve

103

action of extensor carpi radialis brevis

extends and abducts wrist

104

blood supply of extensor carpi radialis brevis

radial and radial recurrent artery

105

origin of extensor digitorum

common extensor tendon

106

insertion of extensor digitorum

extensor expansion

107

innervation of extensor digitorum

posterior interosseous

108

action of extensor digitorum

extends wrist and all joints of the fingers 2-5

109

blood supply of extensor digitorum

posterior interosseous artery

110

origin of extensor digiti minimi

common extensor tendon

111

insertion of extensor digit minimi

extensor expansion of 5th digit

112

innervation of extensor digit minimi

posterior interosseous

113

action of extensor digiti minimi

extends 5th digit

114

blood supply of extensor digiti minimi

posterior interosseous artery

115

origin of extensor carpi ulnaris

common extensor tendon

116

insertion of extensor carpi ulnaris

base of 5th metacarpal

117

innervation of extensor carpi ulnaris

posterior interosseous

118

action of extensor carpi ulnaris

extends and adducts wrist

119

blood supply of extensor carpi ulnaris

posterior interosseous artery

120

origin of supinator

lateral epicondyle of the humerus and proximal ulna

121

insertion of supinator

upper part of radius

122

innervation of supinator

deep radial nerve

123

action of supinator

supinates forearm

124

blood supply of supinator

radial recurrent artery

posterior interosseous artery

125

origin of extensor indicis

lower part of ulna

126

insertion of extensor indicis

extensor expansion of 2nd digit

127

innervation of extensor indicis

posterior interosseous

128

action of extensor indicis

extends all joints of 2nd digit

129

blood supply of extensor indicis

posterior interosseous artery

130

origin of abductor pollicis longus

interosseous membrane

radius and ulna

131

insertion of abductor pollicis longus

base of 1st metacarpal

132

innervation of abductor pollicis longus

posterior interosseous

133

action of abductor pollicis longus

abducts and extends CMC joint of thumb

134

blood supply of abductor pollicis longus

posterior interosseous artery

135

origin of extensor pollicis longus

interosseous membrane of ulna

136

origin of flexor pollicis brevis

trapezium

137

insertion of flexor pollicis brevis

base of the proximal phalanx of thumb

138

innervation of flexor pollicis brevis

recurrent median n

139

function of flexor pollicis brevis

abducts thumb at CMC and MP jointts

140

blood supply of flexor pollicis brevis

superficial palmar branch of radial artery

141

origin opponens pollicis

trapezium

142

insertion of opponens pollicis

radial side of first metacarpal

143

innervation of opponens pollicis

recurrent median n. 

144

function of opponens pollicis

abducts, flexes, and medially rotates thumb at CMC joint (opposition)

145

blood supply of opponens pollicis

superficial palmar branch of radial artery

146

origin of adductor pollicis - transverse head

3rd metacarpal

147

insertion of adductor pollicis

ulnar side of the base of proximal phalanx of thumb

148

innervation of adductor pollicis

deep ulnar

149

function of adductor pollicis

adducts thumb at CMS joint (pinch grip)

150

blood supply to adductor pollicis

deep palmar arch

151

origin adductor pollicis - oblique head

base of 2nd and 3rd metacarpals and capitate bone

152

origin of abductor digiti minimi

pisiform

153

insertion of abductor digiti minimi

medial side of the base of the proximal phalanx of 5th digit

154

innervation of abductor digiti minimi

deep ulnar n. 

155

function of abductor digiti minimi

abducts MP joint of fifth digit

156

blood supply of abductor digiti minimi

deep palmar branch of ulnar artery

157

origin of flexor digiti minimi

hook (hamulus) of hamate

158

insertion of flexor digiti minimi

medial side of the base of the proximal phalanx of the 5th digit

159

innervation of flexor digiti minimi

deep ulnar n. 

160

function of flexor digiti minimi

flexes MP joint of 5th digit

161

blood supply to flexor digiti minimi

deep palmar branch of ulnar artery

162

origin of opponens digiti minimi

hook (hamulus) of hamate 

163

insertion of opponens digiti minimi

body of 5th metacarpal

164

innervation of opponens digiti minimi

deep ulnar n. 

165

function of opponens digiti minimi

laterally rotates and helps flex CMC joint

166

blood supply to opponens digiti minimi

deep palmar branch of ulnar artery

167

lumbricals origin

tendons of the flexor digitorum profundus

168

lumbricals insertion

extensor expansion

169

lumbricals innervation

3rd-4th lumbricals - deep ulnar

1st-2nd  - digital median nerve

170

function of lumbricals

flexes MP joint, extends IP joint

171

blood supply of lumbricals

superficial and deep palmar arches

172

palmar interossei origin

1st - ulnar side of metacarpal 2

2nd - radial side of metacarpal 4

3rd radial side of metacarpal 5

173

palmar interossei insertion

extensor hood of same digit they arise from

174

palmar interossei innervation

deep ulnar n

175

palmar interossei function

adduct respective finger toward 3rd finger (PAD)

176

blood supply to palmar interossei

deep palmar arch

177

dorsal interossei origin

adjacent metacarpal bases and shafts

178

dorsal interossei insertion

extensor expansions

179

dorsal interossei innervation

deep ulnar n

180

dorsal interossei function

abduct respective finger away from 3rd finger (DAB)

181

blood supply to dorsal interossei

deep palmar arch

182

insertion of extensor pollicis longus

base of distal phalanx of thumb

183

innervation of extensor pollicis longus

posterior interosseous

184

action of extensor pollicis longus

extends all joints of thumb

185

blood supply of extensor pollicis longus

posterior interosseous artery

186

origin of extensor pollicis brevis

interosseous membrane

radius

187

insertion of extensor pollicis brevis

base of proximal phalanx of thumb

188

innervation of extensor pollicis brevis

posterior interosseous

189

action of extensor pollicis brevis

extends cmc and mp joints of thumb

190

blood supply of extensor pollicis brevis

posterior interosseous artery

191

flexor carpi radialis origin

medial epicondyle via common tendon

192

flexor carpi radialis insertion

radius

193

flexor carpi radialis innervation

median n. 

194

flexor carpi radialis function

flexes and abducts the wrist

195

blood supply to flexor carpi radialis

radial artery

196

origin of palmaris longus

medial epicondyle via common tendon

197

insertion of palmaris longus

palmar aponeurosis

198

palmaris longus innervation

median n

199

palmaris longus action

flexes wrist

200

palmaris longus blood supply

posterior ulnar recurrent a

201

flexor carpi ulnaris origin

medial epicondyle via common tendon

202

flexor carpi ulnaris insertion

pisiform

203

innervation of flexor carpi ulnaris

ulnar n.

204

function of flexor carpi ulnaris

flexes and adducts the wrist

205

blood supply to flexor carpi ulnaris

posterior ulnar recurrent artery

206

flexor digitorum superficialis origin

medial epicondyle via common tendon, humero-ulna, and radial heads

207

flexor digitorum profundus origin

ulna and interosseous membrane

208

flexor digitorum profundus insertion

distal phalanges of fingers 2-5

209

flexor digitorum profundus innervation

median  and ulnar n. 

210

function of flexor digitorum profundus

flexes all joints of digits 2-5, flexes wrist

211

insertion of flexor digitorum superficialis

middle phalnages of fingers 2-5

212

innervation of flexor digitorum superficialis

median n. 

213

function of flexor digitorum superficialis 

flexes wrist joint, MP and PIP joints of digits 2-5

214

blood supply of flexor digitorum superficialis

radial and ulnar arteries

215

blood supply of flexor digitorum profundus

anterior interosseous artery, muscular branches of ulnar artery

216

origin of flexor pollicis longus

radius and interosseous membrane

217

insertion of flexor pollicis longus

distal phalanx of thumb

218

innervation of flexor pollicis longus

median n. 

219

function of flexor pollicis longus

flexes all joints of the thumb

220

blood supply to flexor pollicis longus

 anterior interosseous artery

221

origin of pronator quadratus

distal part of ulna

222

insertion of pronator quadratus

distal and lateral aspect of radius

223

innervation of pronator quadratus

median n. 

224

function of pronator quadratus

pronates forearm

225

blood supply to pronator quadratus

anterior interosseous artery