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Anatomy 1` Muscles > Muscles A&P > Flashcards

Muscles A&P Flashcards

1
Q

Biceps Brachii-Origin

A

long head: tubercle above glenoid cavity

short head: tip of coracoid process of scapula

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2
Q

Biceps Brachii-Insertion

A

common tendon to radial tuberosity

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3
Q

Biceps Brachii-Action

A

flexes elbow joint, supinates forearm, weak flexor at shoulder

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4
Q

Biceps Femoris-Origin

A

long head-Ischial tuberosity

short head- linea aspera and distal femur

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5
Q

Biceps Femoris-Insertion

A

common tendon into head of fibula, lateral condyl of tibia

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6
Q

Biceps Femoris- Action

A

flexes the leg at knee, extends thigh, laterally rotates the knee is flexed

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7
Q

Brachialis-Origin

A

frontal distal humerus

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8
Q

Brachialis-Insertion

A

coronoid process of ulna

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9
Q

Brachialis-Action

A

flexes forearm at elbow

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10
Q

Brachioradialis-Origin

A

later supercondylar ridge of humerus

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11
Q

Brachioradialis-Insertion

A

base of styloid process of radius

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12
Q

Brachioradialis-Action

A

strong forearm flexor(when forearm is partially flexed)

stabilizes elbow when rapid flexion-extension

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13
Q

Deltoid-Origin

A

lateral 3rd of clavicle, acromion, spine of scapula

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14
Q

Deltoid-Insertion

A

deltoid tuberosity of the humerus

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15
Q

Deltoid-Action

A

flexes and medially rotates humerus with anterior fibers

extends and laterally rotates arm with posterior fibers

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16
Q

extensor radialis brevis-origin

A

common extensor tendon on anterior surface of the lateral epicondyle of the humerus

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17
Q

extensor radialis brevis-insertion

A

dorsal surface of base of metacarpal 3

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18
Q

extensor radialis brevis-action

A

assists in abduction of the wrist

extends something?

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19
Q

extensor radialis longus-origin

A

distal 1/3 lateral supracondylar ridge of humerus

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20
Q

extensor radialis longus-insertion

A

dorsal surface of base of metacarpal 2

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21
Q

extensor radialis longus-action

A

extends wrist w/ extensor carpi ulnaris

abducts write with flexor carpi radials

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22
Q

extensor radialis ulnaris-origin

A

lateral epicondyle of humerus

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23
Q

extensor radialis ulnaris-insertion

A

base of the 5th metacarpal

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24
Q

extensor radialis ulnaris- action

A

extends and abducts wrist

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25
Q

extensor digitorum-origin

A

common extensor tendon anterior surface of lateral epicondyl of humerus

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26
Q

extensor digitorum-insertion

A

extensory expansions of digits 2-5

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27
Q

extensor digitorum-action

A

finger extension, extends wrist, abduct fingers

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28
Q

extensor hallucis longus-origin

A

middle of anterior surface of fibular, interosseous membrane

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29
Q

extensor hallucis longus-insertion

A

distal phalanx of big toe digit 1

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30
Q

extensory hallucis longus-action

A

extends big toe, dorsiflexes foot

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31
Q

external intercostals-origin

A

inferior border of rib above

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32
Q

external intercostals-insertion

A

superior border of rib below

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33
Q

external intercostals-action

A

elevates rib cage, helps in inspiration

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34
Q

external obliques-origin

A

outer surface of lower 8 ribs

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35
Q

external obliques-insertion

A

linea aspera vis aponeurosis

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36
Q

external obliques-action

A

support and compress abdomen, flex vertebral clump anterior ally, laterally flexes, rotates, forces expiration

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37
Q

flexor carpi radiali-origin

A

medial epicondyle of humerus

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38
Q

flexor carpi radiali-insertion

A

base of 2nd and 3rd metacarpals

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39
Q

flexor carpi radiali-action

A

powerful flexor of wrist, abducts hand

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40
Q

flexor carpi ulnaris-origin

A

medial epicondyle of humerus, olecranon process, posterior surface of ulna

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41
Q

flexor carpi ulnaris-insertion

A

pisiform and hamate bones, base of 5th metacarpal(anterior)

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42
Q

flexor carpi ulnaris-action

A

powerful flexor of wrist, adducts hands w/extensor carpi ulnaris, stabilizes wrist during finger extension

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43
Q

flexor digitorm superficialis-origin

A

medial epicondyle of humerus, coronoid process of ulna. shaft of radius

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44
Q

flexor digitorum superficialis-insertion

A

by 4 tendons into middle phalanges of fingers 2-5

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45
Q

flexor digitorum superificialis-action

A

flexes wrist and middle phalanges of fingers 2-5

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46
Q

flexor hallucis longus-origin

A

midshaft of fibula, interosseous membrane

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47
Q

flexor hallucis longus- insertion

A

tendons runs underfoot to distal phalanx of big toe-digit 1

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48
Q

flexor hallucis longus-action

A

flexes big toe, plantar flexes, inverts foot

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49
Q

gastrocnemius-origin

A

by two heads from medial and lateral condyles of femur

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50
Q

gastrocnemius-insertion

A

posterios calcanues via calcaneal tendon

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51
Q

gastrocnemius- action

A

plantar flexes foot when knee is extended, flexes knee when foot is dorsiflexed

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52
Q

gluteus maximus-origin

A

dorsal ilium, sacrum, coccyx

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53
Q

gluteus maximus-insertion

A

gluteal tuberosity of femur, iliotibial tract

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54
Q

gluteus maximus-action

A

extensor of thigh, laterally rotates and abducts thigh, inactive during standing

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55
Q

gluteus medius-origin

A

lateral surface of ilium between anterior and posterior gluteal lines

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56
Q

gluteus medius-insertion

A

via short tendon into lateral aspect of greater trochanter

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57
Q

gluteus medius-action

A

abducts thigh, anterior part rotates hip medially, posterior part rotates hip laterally

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58
Q

infraspinatus-origin

A

infraspinous fossa of scapular

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59
Q

infraspinatus-insertions

A

greater tubercle of humerus, posterior to supraspinatus

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60
Q

infraspinatus-action

A

holds head of humerus in glenoid cavity, stabilizes shoulder joint, rotates humerus laterally

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61
Q

internal intercostals-origin

A

superior border of rib below

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62
Q

internal intercostals-insertion

A

inferior border of rib above(costal groove)

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63
Q

internal intercostals-action

A

depress rib cage, forced expiration

64
Q

internal olique-origin

A

lumbar fascia, iliac crest, inquinal ligament

65
Q

internal oblique-insertion

A

linea alba, pubic crest, ribs 10-12, costal margin

66
Q

internal oblique-action

A

support and compress abdomen, raise intraabdominal pressure, flex vertebral column anteriorally, lateral flexes, assist if forced expiration

67
Q

latissimus dorsi-origin

A

via lumbodorsal fascia into spines t7-t5, lower 4 ribs and iliac crest

68
Q

latissimus dorsi-insertion

A

floor of intertubercular groove of humerus

69
Q

latissimus dorsi-action

A

arm adductor, extension, hyperextension, rotates arm and shoulder, depresses scapula

70
Q

levator scapula-origin

A

transverse processes of c1-c4

71
Q

levator scapula-insertion

A

medial border of scapula, superior to spine

72
Q

levator scapula-action

A

elevates and adducts scapula, tilts glenoid cavity down. flexes neck to same side

73
Q

masseter-origin

A

zygomatic arch and maxilla

74
Q

masseter- insertion

A

angle and ramus of mandible

75
Q

masseter-action

A

primse mover of jaw closure, elevates mandible

76
Q

pectineus-orgin

A

pectineal line of pubis

77
Q

pectineus-insertion

A

inferior from lesser trochanter to line aspera

78
Q

pectineus-action

A

prime mover of thigh flexion, lateral flexion of vertebral column

79
Q

pectoralis major-origin

A

anterior surface of medial clavicle

80
Q

pectoralis major-insertion

A

lateral lip of inter tubercle groove of humerus

81
Q

pectoralis major-action

A

medial rotation and adduction of the arm, extends arm at shoulder from flexed position

82
Q

pectoralis minor-origin

A

anterior surface of ribs 3-5

83
Q

pectoralis minor insertion

A

coracoid process of scapula

84
Q

pectoralis minor-action

A

draws scapula forward and downward, draws rib cage superiorly

85
Q

pronator teres-origin

A

medial epicondyle of humerus, coronoid process of ulna

86
Q

pronator teres-insertion

A

by common tendon into lateral radius midshaft

87
Q

pronator teres-action

A

abducts ulna during forearm pronation

88
Q

rectus abdominus-origin

A

pubic crest, symphysis

89
Q

rectus abdominus-insertion

A

typhoid process, costal cartilages of ribs 5-7

90
Q

rectus abdominus-action

A

flex and rotate lumar vertebrae, fix and depress ribs, stabilize pelvis when walking

91
Q

rectus femoris-origin

A

anterior inferior iliac spine, superior margin of acetabulum

92
Q

rectus femoris-insertion

A

patella and tibial tuberosity via patella ligament

93
Q

rectus femoris-action

A

extends knee, flexes thigh at hip

94
Q

rhomboid major-origin

A

spinous process of t2-t5

95
Q

rhomboid major-insertion

A

medial border of scapula

96
Q

rhomboid major -action

A

retracts scapula, rotates glenoid cavity downward, stabilizes scapula

97
Q

rhomboid minor-origin

A

spinous process of c7-t1

98
Q

rhomboid minor-insertion

A

medial border of scapula

99
Q

rhomboid minor-action

A

retracts scapula, rotates glenoid cavity downward, stabilizes scapula

100
Q

sartoris-origin

A

anterior superior iliac spine

101
Q

sartorius-insertion

A

medial aspect of proximal tibia

102
Q

sartorius-action

A

flexes adbucts and laterally rotates the thigh, flexes knee

103
Q

semimembranosus-origin

A

ischial tuberosity

104
Q

semimembranosus-insertion

A

medial condyle of tibia

105
Q

semimembranosus-action

A

extends thigh and flexes knee, medialy rotates leg

106
Q

semitendinosus-origin

A

ischial tuberosity

107
Q

semitendinosus-insertion

A

medial aspect of upper tibial shaft

108
Q

semitendinsus-action

A

extends thigh and flexes knee, medially rotates leg with semimembranosus

109
Q

serratus anterior-origin

A

by series of muscle slips from ribs 1-9

110
Q

serratus anterior-inserion

A

anterior surface of vertebral border of scapula

111
Q

serratus anterior-action

A

protract and hold scapula against rib cage, rotates scapula, abducts and raise arm and horizontal arm movements

112
Q

soleus-origin

A

superior tibia, fibula and inerosseous membrane

113
Q

soleus-insertion

A

posterior calcaneus via calcaneal tendon

114
Q

soleus-action

A

plantar flexes foot, important locomotor and postural muscle

115
Q

subrascapularis-origin

A

subscapular fossa of scapula

116
Q

subrascapularis-insertion

A

lesser tubercle of humerus

117
Q

subrascapularis-action

A

medial rotator or humerus, holds head of humerus in the glenoid cavity, stabilizes shoulder

118
Q

supraspinatus-origin

A

supraspinous fossa of scapula

119
Q

supraspinatus-insertion

A

superior part of the greater tubercle of humerus

120
Q

supraspinatus-action

A

stabilizes shoulder joint, helps prevent downward dislocation of humerus

121
Q

temporalis-origin

A

temporal fossa

122
Q

temporalis-insertion

A

coronoid process of mandible

123
Q

temporalis-action

A

closes jaw, elevates and retracts mandible, maintains position of mandible at rest

124
Q

tensor fasciae latae-origin

A

anterior iliac crest and anterior superior iliac spine

125
Q

tensor fasciae latae-insertion

A

iliotibil tract

126
Q

tensor fasciae latae-action

A

flexes and abducts thigh, rotates thigh medially, steadies the trunk by pulling iliotibil tract taut(locking knee)

127
Q

teres major-origin

A

posterior surface of scapula at inferior angle

128
Q

teres major-insertion

A

intertubercular groove of humerus, tendon fused with tendon of latissimus dorsi

129
Q

teres major-action

A

posteromedially extends, medially rotates, adducts arm

130
Q

teres minor-origin

A

lateral border of dorsal scapular surface

131
Q

teres minor-insertion

A

greater tubercle of humerus, inferior to infraspinatus

132
Q

teres minor-action

A

posteromedially extends, medially rotates, adducts arm

133
Q

tibialis anterior-origin

A

lateral condylar and upper 2/3 of tibial shaft, interosseous membrane

134
Q

tibialis anterior-insertion

A

by tendon into inferior surface of medial cuneiform and 1st metatarsal

135
Q

tibialis anterior-action

A

mover of dorsiflexion, inverts foot, support medial longitudinal arch

136
Q

tibialis posterior-origin

A

lateral surface of the posterior tibia, shaft of medial fibula, interosseous membrane

137
Q

tibialis posterior-insertion

A

medial surface of navicular bones, plantar cuneiforms. bases of metatarsals 2-4

138
Q

tibialis posterior-action

A

inverts foot, assist in plantar flexion of the foot at the ankle

139
Q

transversus abdominis-origin

A

inguinal ligament, lumbar fascia, cartilages of last 6 ribs, iliac crest

140
Q

transversus adbominis-insertion

A

linea alba, pubic crest

141
Q

transversus abdominis-action

A

compresses abdominal contents

142
Q

trapezius-origin

A

occipital bone, ligamentum nuchea, spines of c7-t12

143
Q

trapezius-insertion

A

spine and acromion of scapula, lateral 3rd of clavicle

144
Q

trapezius-action

A

stabilizes and raises and retracts and rotates scapula, adducts and retracts scapula, elevates scapula, depresses scapula and shoulder

145
Q

triceps brachii-origin

A

lateral head-posterior shaft of humerus
long head-infaglenoid tubercle of scapula
medial head-posterior humeral shalt distal to radial groove

146
Q

triceps brachii-insertion

A

by common tendon into olacrenon process of ulna

147
Q

triceps brachii-action

A

stabilizes shoulder joint ands assist in arm adduction

148
Q

vastus intermedius-origin

A

anterior and lateral surface of proximal femur

149
Q

vastus intermedius-insertion

A

patella and tibial tuberosity via patella ligament

150
Q

vastus intermedius-action

A

extends knee

151
Q

vastus lateralis-origin

A

greater trochanter, intertrochanteric line, line aspera

152
Q

vastus lateralis-insertion

A

patella and tibial tuberosity via patella ligament

153
Q

vastus lateralis-action

A

extends ans stabilizes knee

154
Q

vastus medialis-origin

A

linea aspera, intertrochanteric line

155
Q

vastus medialis-insertion

A

patella and tibial tuberosity via patella ligament

156
Q

vastus medialis-action

A

extends knee, stabilizes patella

Anatomy 1` Muscles (1 decks)

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