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WQ24 - A&P I > Muscles WQ24 > Flashcards

Muscles WQ24 Flashcards

1
Q

what is the action of the masseter?

A
  • elevates the mandible of the jaw
  • closes jaw
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2
Q

where does the masseter originate?

A

zygomatic arch

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3
Q

where does the masseter insert?

A

ramus of mandible

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4
Q

what is the action of sternocleidomastoid?

A
  • flexion of the head at the neck
  • lateral flexion of head at shoulder
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5
Q

where does the sternocleidomastoid originate?

A
  • sternal end of clavicle
  • manubrium of sternum
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6
Q

where does the sternocleidomastoid insert?

A

mastoid process of temporal bone

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7
Q

what is the action of the splenius?

A
  • extension/hyperextension of head
  • rotation of head
  • flexion of head
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8
Q

where does the splenius originate?

A
  • spinous processes
  • cervical & thoracic vertebrae
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9
Q

what is the action of the trapezius?

A
  • elevation of the shoulders
  • extends & hyperextends head
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10
Q

where does the trapezius originate?

A

spinous process of cervical & thoracic vertebrae

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11
Q

where does the trapezius insert?

A
  • clavicle
  • acromion process of scapula
  • spine of scapula
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12
Q

what is the action of the rhomboids (major & minor)

A
  • retraction of scapula at shoulders
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13
Q

where do the rhomboids originate?

A

spinous process of cervical and thoracic vertebrae

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14
Q

where do the rhomboids insert?

A

medial border of scapula

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15
Q

what is the action of the pectoralis minor?

A

protraction of the scapula at shoulder (downward)
- downward rotation of scapula

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16
Q

where does the pectoralis minor originate?

A

ribs (anterior and superior margins)

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17
Q

where does the pectoralis minor insert?

A

(anterior surface of) vertebral border of scapula

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18
Q

what is the action of the serratus anterior?

A
  • protraction of scapula at the shoulder
  • upward rotation of scapula
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19
Q

what is the action of the deltoid?

A

abduction of the arm at shoulder

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20
Q

where does the deltoid originate?

A
  • clavicle
  • acromion and spine of scapula
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21
Q

where does the deltoid insert?

A

deltoid tuberosity of humerus

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22
Q

what is the action of the supraspinatus?

A

abduction of arm at shoulder

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23
Q

where does the supraspinatus originate?

A

supraspinous fossa of scapula

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24
Q

where does the supraspinatus insert?

A

greater tubercle of humerus

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25
Q

what is the action of the subscapularis?

A

medial rotation of arm at shoulder

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26
Q

where does the subscapularis originate?

A

subscapular fossa of scapula

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27
Q

where does the subscapularis insert?

A

lesser tubercle of humerus

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28
Q

what is the action of the teres major?

A
  • extension of arm at shoulder
  • adduction of arm at shoulder
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29
Q

where does the teres major originate?

A

inferior angle of scapula

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30
Q

where does the teres major insert?

A

intertubercular groove of humerus

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31
Q

what is the action of the teres minor?

A

lateral rotation of arm at shoulder

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32
Q

where does the teres minor originate?

A

lateral border of scapula

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33
Q

where does the teres minor insert?

A

greater tubercle of humerus

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34
Q

what is the action of the infraspinatus?

A

lateral rotation of arm at shoulder

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35
Q

where does the infraspinatus originate?

A

infraspinous fossa of scapula

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36
Q

where does the infraspinatus insert?

A

greater tubercle of humerus

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37
Q

what is the action of the coracobrachialis?

A
  • flexion of arm at shoulder
  • abduction of arm at shoulder
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38
Q

where does the coracobrachialis originate?

A

coracoid process of scapula

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39
Q

where does the coracobrachialis insert?

A

medial shaft of humerus

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40
Q

what is the action of the pectoralis major?

A
  • flexion of arm at shoulder
  • abduction of arm at shoulder
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41
Q

where does the pectoralis major originate?

A

cartilages of ribs, manubrium, body of sternum, medial clavicle

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42
Q

where does the pectoralis major insert?

A
  • greater tubercle
  • intertubercular groove of humerus
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43
Q

what is the action of the latissimus dorsi?

A
  • extension of arm at shoulder
  • adduction of arm at shoulder
  • medial rotation of arm at shoulder
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44
Q

where does the latissimus dorsi originate?

A
  • spinous process of inferior thoracic and all lumbar vertebrae
  • ribs
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45
Q

where does the latissimus dorsi insert?

A

intertubercular groove of humerus

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46
Q

what is the action of the triceps brachii?

A
  • extension of forearm at elbow
  • (long head) extension and adduction of arm at shoulder
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47
Q

where does the triceps brachii originate?

A
  • humerus (lateral and posterior surface)
  • scapula (below the glenoid cavity)
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48
Q

where does the triceps brachii insert?

A

olecranon process of the ulna

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49
Q

what is the action of the biceps brachii?

A
  • flexion of forearm at elbow
  • supination of forearm
  • flexion of arm at shoulder
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50
Q

where does the biceps brachii originate?

A
  • coracoid process of scapula
  • scapula (above glenoid cavity)
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51
Q

where does the biceps brachii insert?

A

radial tuberosity

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52
Q

what is the action of the brachialis?

A

flexion of forearm at elbow

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53
Q

where does the brachialis originate?

A

humerus (anterior, distal surface)

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54
Q

where does the brachialis insert?

A

tuberosity of ulna

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55
Q

what is the action of the extensor carpi radialis brevis?

A
  • extension of hand at wrist
  • abduction of hand at wrist
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56
Q

where does the extensor carpi radialis brevis originate?

A

lateral epicondyle of humerus

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57
Q

where does the extensor carpi radialis brevis insert?

A

metacarpal

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58
Q

what is the action of the extensor carpi ulnaris?

A
  • extension of hand at wrist
  • adduction of hand at wrist
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59
Q

where does the extensor carpi ulnaris originate?

A

lateral epicondyle of humerus

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60
Q

where does the extensor carpi ulnaris insert?

A

metacarpal

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61
Q

what is the action of the extensor digitorum?

A

extends at phalanges

62
Q

where does the extensor digitorum originate?

A

lateral epicondyle of humerus

63
Q

where does the extensor digitorum insert?

A

phalanges

64
Q

what is the action of the flexor carpi radialis?

A
  • flexes hand at wrist
  • abducts hand at wrist
65
Q

where does the flexor carpi radialis originate?

A

medial epicondyle of humerus

66
Q

where does the flexor carpi radialis insert?

A

metacarpal

67
Q

what is the action of the flexor carpi ulnaris?

A
  • flexion of hand at wrist
  • adduction of hand at wrist
68
Q

where does the flexor carpi ulnaris originate?

A

medial epicondyle of humerus

69
Q

where does the flexor carpi ulnaris insert?

A

metacarpal

70
Q

what is the action of the flexor digitorum superficialis?

A

flexion at the phalanges

71
Q

where does the flexor digitorum superficialis originate?

A
  • medial epicondyle of humerus
72
Q

where does the flexor digitorum superficialis insert?

A

middle phalanges

73
Q

what is the action of the rectus abdominis?

A
  • depression of ribs
  • flexion of vertebral column/torso
  • abdominal compression
74
Q

where does the rectus abdominis originate?

A

pubic crest

75
Q

where does the rectus abdominis insert?

A
  • ribs
  • xiphoid process of sternum
76
Q

what is the action of the external obliques?

A
  • flexion of the vertebral column
  • rotation of the vertebral column
  • abdominal compression
77
Q

where does the external obliques originate?

A

ribs

78
Q

where does the external obliques insert?

A
  • linea alba
  • iliac crest
79
Q

what is the action of the internal oblique?

A
  • flexion of vertebral column
  • rotation of vertebral column
  • abdominal compression
80
Q

where does the internal oblique originate?

A

iliac crest

81
Q

where does the internal oblique insert?

A
  • ribs
  • linea alba
82
Q

what is the action of the transverse abdominis?

A

abdominal compression

83
Q

where does the transverse abdominis originate?

A
  • ribs
  • iliac crest
84
Q

where does the transverse abdominis insert?

A
  • xiphoid process of sternum
  • pubic crest
  • linea alba
85
Q

what is the action of the gluteus maximus?

A
  • extension of thigh at hip
  • lateral rotation of thigh at hip
86
Q

where does the gluteus maximus originate?

A
  • ilium
  • sacrum
  • coccyx
87
Q

where does the gluteus maximus insert?

A

linea aspera of femur

88
Q

what is the action of the gluteus medius?

A

abduction of thigh at hip

89
Q

where does the gluteus medius originate?

A
  • iliac crest
  • outer surface of the ilium
90
Q

where does the gluteus medius insert?

A

greater trochanter of the femur

91
Q

what is the action of the tensor fasciae latae?

A
  • flexion of thigh at hip
  • abduction of thigh at hip
  • medial rotation of thigh at hip
92
Q

where does the tensor fasciae latae originate?

A

anterior superior iliac spine

93
Q

where does the tensor fasciae latae insert?

A

lateral condyle of tibia

94
Q

what is the action of the adductors?

A

adduction of thigh at hip

95
Q

where do the adductors originate?

A
  • inferior ramus of pubis
  • ischial tuberosity
96
Q

where do the adductors insert?

A

linea aspera of femur

97
Q

what is the action of the iliacus?

A

flexion of thigh at hip

98
Q

where does the iliacus originate?

A

iliac fossa

99
Q

where does the iliacus insert?

A

lesser trochanter of the femur

100
Q

what is the action of the psoas major?

A

flexion of thigh at hip

101
Q

where does the psoas major originate?

A

transverse processes of lumbar vertebrae

102
Q

where does the psoas major insert?

A

lesser trochanter of femur

103
Q

what is the action of the gracilis?

A

adduction of thigh at hip

104
Q

where does the gracilis originate?

A

inferior ramus of pubis

105
Q

where does the gracilis insert?

A

tibia (proximal, medial)

106
Q

what is the action of the sartorius?

A
  • lateral rotation of thigh at hip
  • flexion of thigh at hip and leg at knee
107
Q

where does the sartorius originate?

A

anterior superior iliac spine

108
Q

where does the sartorius insert?

A

tibia (anterior, medial)

109
Q

what is the action of the rectus femoris?

A

extension of leg at knee

110
Q

where does the rectus femoris originate?

A

anterior inferior iliac spine

111
Q

where does the rectus femoris insert?

A

tibial tuberosity of tibia

112
Q

what is the action of the biceps femoris?

A

flexion of leg at knee

113
Q

where does the biceps femoris originate?

A
  • ischial tuberosity
  • linea aspera of femur
114
Q

where does the biceps femoris insert?

A
  • head of fibula
  • lateral condyle of tibia
115
Q

what is the action of the semimembranosus?

A

flexion of leg at knee

116
Q

where does the semimembranosus originate?

A

ischial tuberosity

117
Q

where does the semimembranosus insert?

A

medial condyle of tibia

118
Q

what is the action of the semitendinosus?

A

flexion of leg at knee

119
Q

where does the semitendinosus originate?

A

ischial tuberosity

120
Q

where does the semitendinosus insert?

A

tibia (proximal, medial)

121
Q

what is the action of the vastus lateralis?

A

extension of leg at knee

122
Q

where does the vastus lateralis originate?

A

linea aspera of femur

123
Q

where does the vastus lateralis insert?

A

tibial tuberosity of tibia

124
Q

what is the action of the vastus intermedius?

A

extension of leg at knee

125
Q

where does the vastus intermedius originate?

A

linea aspera of femur

126
Q

where does the vastus intermedius insert?

A

tibial tuberosity of tibia

127
Q

where does the vastus medialis insert?

A

tibial tuberosity of tibia

128
Q

what is the action of the vastus medialis?

A

extension of leg at knee

129
Q

where does the vastus medialis originate?

A

linea aspera of femur

130
Q

what is the action of the gastrocnemius?

A

plantar flexion (extension of foot at ankle)

131
Q

where does the gastrocnemius originate?

A

medial and lateral condyles of femur

132
Q

where does the gastrocnemius insert?

A

calcaneus

133
Q

what is the action of the soleus?

A

plantar flexion (extension of foot at ankle)

134
Q

where does the soleus originate?

A
  • head and shaft of fibula
  • shaft of tibia
135
Q

where dose the soleus insert?

A

calcaneus

136
Q

what is the action of the tibialis anterior?

A
  • dorsiflexion (flexion of foot at ankle)
  • inversion of foot
137
Q

where does the tibialis anterior originate?

A

lateral condyle and shaft of tibia

138
Q

where does the tibialis anterior insert?

A

metatarsal and medial cuneiform

139
Q

what is the action of the flexor digitorum longus?

A

flexion of toes

140
Q

where does the flexor digitorum longus originate?

A

tibia (posterior, medial)

141
Q

where does the flexor digitorum longus insert?

A

distal phalanges

142
Q

what is the action of the fibularis longus/peroneus?

A

eversion of foot

143
Q

where does the fibularis longus originate?

A

head & shaft of fibula

144
Q

where does the fibularis longus insert?

A

metatarsal and medial cuneiform

145
Q

what is the action of the fibularis tertius/peroneus?

A

eversion of foot

146
Q

where does the peroneus tertius originate?

A

fibula (medial, anterior surface)

147
Q

where does the peroneus tertius insert?

A

metatarsal

148
Q

what is the action of the extensor digitorum longus?

A

extension at toes

149
Q

where does the extensor digitorum longus originate?

A

lateral condyle of tibia and fibula

150
Q

where does the extensor digitorum longus insert?

A

middle and distal phalanges

WQ24 - A&P I (4 decks)

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