Muscles- Origin, Insertions, and Primary Action Flashcards Preview

Anatomy-Exam 3 (CH. 9, 10) > Muscles- Origin, Insertions, and Primary Action > Flashcards

Flashcards in Muscles- Origin, Insertions, and Primary Action Deck (139):
1

What is the origin and insertion of the "Frontalis"?

Origin- galea aponeurotica
Insertion- Eyebrows

2

What is the primary action of the "frontalis"?

Raises eyebrows, wrinkles forehead

3

What is the origin and insertion of the "occipitalis"?

O- Occipital AND Temporal bones
I- Galea aponeurotica

4

What is the primary action of the "occipitalis"?

Pull scalp posteriorly

5

What is the origin and insertion of the "orbicularis oculi"?

O- Frontal and maxillary bones
I- eyelid

6

What is the primary action of the "orbicularis oculi"?

Blinking and squinting

7

What is the origin and insertion of the "orbicularis oris"?

O- Maxilla AND Mandible
I- Muscle and skin of the mouth

8

What is the primary action of the "orbicularis oris"?

closes, purses, and protrudes lips

9

What is the origin and insertion of the "buccinators"?

O- molar region of Maxilla AND Mandible
I-Orbicularis oris

10

What is the primary action of the "buccinators"?

Draws corners of mouth laterally, chewing

11

What is the origin and insertion of the "temporalis"?

O-Temporal bone
I- Mandible

12

What is the primary action of the "temporalis"?

Elevates and retracts mandible

13

What is the origin and insertion of the "masseter"?

O-Zygomatic arch/ Maxilla
I-Mandible

14

What is the primary action of the "masseter"?

Primary elevator of mandible

15

What is the origin and insertion of the "digastric"?

O-temporal bone and mandible
I- Hyoid

16

What is the primary action of the "digastric"?

Swallowing and speech

17

What is the origin and insertion of the "mylohyoid"?

O- mandible
I- Hyoid

18

What is the primary action of the "mylohyoid"?

elevates hyoid and floor of mouth

19

What is the origin and insertion of the "sternohyoid"?

O-sternum
I-Hyoid

20

What is the primary action of the "sternohyoid"?

Depresses hyoid and larynx

21

What is the origin and insertion of the "sternothyroid"?

O- sternum
I- Thyroid cartilage

22

What is the primary action of the "sternothyroid"?

pulls thyroid cartilage inferiorly

23

What is the origin and insertion of the "thyrohyoid"?

O- thyroid cartilage
I- hyoid

24

What is the primary action of the "thyrohyoid"?

depresses hyoid and elevates larynx

25

What is the origin and insertion of the "sternocleidomastoid"?

O-sternum/clavicle
I-Temporal and Occipital bones

26

What is the primary action of the "sternocleidomastoid"?

both- neck flexion: Singular-rotates head to opposite side

27

What is the origin and insertion of the "scalenes (anterior, medial, posterior)"?

O-cervicle vertebrae
I-Ribs 1 and 2

28

What is the primary action of the "scalenes"?

Elevates ribs 1 and 2; flex and rotate neck

29

What is the primary action of the "splenius capitis"?

Both- extend/hyperextend head
single- rotate and lateral flexion

30

What is the primary action of the "splenius cervicis"?

Both- extend/hyperextend head
single- rotate and lateral flexion

31

What is the primary action of the "Illiocostalis cervicis"?

Both- extend vertebral column
single- lateral flexion

32

What is the primary action of the "illiocostalis thoracis"?

Both- extend vertebral column
single- lateral flexion

33

What is the primary action of the "illiocostalis lumborum"?

Both- extend vertebral column
single- lateral flexion

34

What is the primary action of the "longissimus capitis"?

Both-extends head
single-turns head

35

What is the primary action of the "longissimus cervicis"?

Both- extend vertebral column
single- lateral flexion

36

What is the primary action of the "longissimus thoracis"?

Both- extend vertebral column
single- lateral flexion

37

What is the primary action of the "spinalis thoracis"?

Extends vertebral column

38

What is the primary action of the "spinalis cervicis"?

Extends vertebral column

39

What is the origin and insertion of the "multifidus"?

O-Vertebra
I-(2-3) vertebrae above origin

40

What is the primary action of the "multifidus"?

stabilization and rotation of vertebral column

41

What is the origin and insertion of the "diaphragm"?

O-inferior surface of rib cage
I- central tendon

42

What is the primary action of the "diaphragm"?

inspiration (flattens on contraction)

43

What is the primary action of the "external intercostal"?

elevates rib cage (inspiration)

44

What is the primary action of the "internal intercostal"?

depresses rib cage (forced expiration)

45

What is the origin and insertion of the "rectus abdominis"?

O- pubic bone
I- xiphoid process and costal cartilage

46

What it the primary action of the "rectus abdominis"?

flex, rotate trunk; compress wall

47

What is the insertion of the "external oblique"?

I- linea alba

48

What is the primary action of the "external oblique"?

flex and compress wall; rotation and lateral flex

49

What is the insertion of the "internal oblique"?

l- linea alba

50

What is the primary action of the "internal oblique"?

flex and compress wall; rotation and lateral flex

51

What is the insertion of the "transversus abdominis"?

I-linea alba

52

What is the primary action of the "transversus abdominis"?

Compresses abdomen

53

What is the origin and insertion of the "pectoralis minor"?

O- ribs 3-5
I- Scapula

54

What is the primary action of the "pectoralis minor"?

draws scapula forward and down or ribcage superiorly

55

What is the primary action of the "serratus anterior"?

Holds scapula to thorax

56

What is the origin and insertion of the "trapezius"?

O-occipital bone and thoracic vertebrae
I-scapula and clavicle

57

What is the primary action of the "trapezius"?

stabilizes, raises, rotates and retracts scapula

58

What is the origin and insertion of the "levator scapulae"?

O- Cervical vertebrae
I- Scapula

59

What is the primary action of the "levator scapulae"?

Elevates and adducts scapula

60

What is the origin and insertion of the "rhomboid major"?

O-Thoracic vertebrae
I-Scapula

61

What is the primary action of the "rhomboid major"?

retracts scapula

62

What is the origin and insertion of the "rhomboid minor"?

O- C7 and T1
I- Scapula

63

What is the primary action of the "rhomboid minor"?

Retracts scapula

64

What is the origin and insertion of the "pectoralis major"?

O-clavicle, sternum, and costal cartilage
I-Humerus

65

What is the primary action of the "pectoralis major"?

PRIME MOVER of arm flexion; rotation and adduction

66

What is the origin and insertion of the "latissimus dorsi"?

O-vertebral column, ribs and Illium
I-Humerus

67

What is the primary action of the "latissimus dorsi"?

PRIME MOVER of arm extension; adduction of arm

68

What is the origin and insertion of the "deltoid"?

O-clavicle and scapula
I-Humerus

69

What is the primary action of the "deltoid"?

PRIME MOVER of arm abduction; flexion and rotation of arm

70

What is the primary action of the "subscapularis"?

stabilizes shoulder

71

What is the primary action of the "supraspinatus"?

stabilizes shoulder

72

What is the primary action of the "infraspinatus"?

stabilizes shoulder

73

What is the origin and insertion of the "teres minor"?

O-scapula
I-Humerus

74

What is the primary action of the "teres minor"?

stabilizes shoulder

75

What is the origin and insertion of the "teres major"?

O-scapula
I-humerus

76

What is the primary action of the "teres major"?

Extension, rotation and adduction of arm

77

What is the origin and insertion of the "triceps brachii"?

O-scapula and humerus
I-ulna

78

What is the primary action of the "triceps brachii"?

forearm extensor

79

What is the origin and insertion of the "biceps brachii"?

O-scapula
I- radius

80

What is the primary action of the "biceps brachii"?

flexes elbow and supinates

81

What is the origin and insertion of the "brachialis"?

O-humerus
I-ulna

82

What is the primary action of the "brachialis"?

flexes forearm

83

What is the origin and insertion of the "brachioradialis"?

O-humerus
I-radius

84

What is the primary action of the "brachioradialis"?

aids in forearm flexion

85

What is the primary action of the "pronator teres"?

pronation

86

What is the primary action of the "supinator"?

supination

87

What is the origin and insertion of the "Iliacus"?

O-ilium and sacrum
I-femur

88

What is the primary action of the "Iliacus"?

PRIME MOVER for thigh/trunk flexion

89

What is the origin and insertion of the "psoas major"?

O-lumbar vertebrae
I- femur

90

What is the primary action of the "psoas major"?

PRIME MOVER for thigh/trunk flexion

91

What is the origin and insertion of the "Sartorius"?

O- ilium
I- tibia

92

what is the primary action of the "Sartorius"?

flexes and abducts thigh

93

What is the origin and insertion of the "adductor magnus"?

O- Ischium
I- femur

94

What is the primary action of the "adductor magnus"?

adducts thigh

95

What is the origin and insertion of the "adductor longus"?

O-pubis
I- femur

96

What is the primary action of the "adductor longus"?

adducts thigh

97

What is the origin and insertion of the "gracilis"?

O- pubis
I- tibia

98

What is the primary action of the "gracilis"?

adducts thigh

99

What is the origin and insertion of the "gluteus maximus"?

O- pelvis
I- femur

100

What is the primary action of the "gluteus maximus"?

MAJOR extensor of the thigh

101

What is the origin and insertion of the "gluteus medius"?

O- Ilium
I- Femur

102

What is the primary action of the "gluteus medius"?

abducts thigh

103

What is the origin and insertion of the "gluteus minimus"?

O- ilium
I- femur

104

What is the primary action of the "gluteus minimus"?

abducts thigh

105

What is the origin and insertion of the "tensor fasciae latae"?

O- ilium
I- Iliotibial tract

106

What is the primary action of the "tensor fasciae latae"?

flexes and abducts thigh

107

What is the origin and insertion of the "rectus femoris"?

O- Ilium
I- patella

108

What is the primary action of the "rectus femoris"?

extends knee; flexes thigh at hip

109

What is the origin and insertion of the "vastus lateralis"?

O- femur
I-patella

110

What is the primary action of the "vastus lateralis"?

extends and stabilizes knee

111

What is the origin and insertion of the "vastus medialis"?

O- femur
I- patella

112

What is the primary action of the "vastus medialis"?

extends knee

113

What is the origin and insertion of the "vastus intermedius"?

O- femur
I- patella

114

What is the primary action of the "vastus intermedius"?

extends knee

115

What is the origin and insertion of the "biceps femoris"?

O- Ischium and femur
I-fibula and tibia

116

What is the primary action of the "biceps femoris"?

extends thigh and flexes knee

117

What is the origin and insertion of the "semimembranosus"?

O- Ischium
I- Tibia

118

What is the primary action of the semimembranosus"?

extends thigh and flexes knee

119

What is the origin and insertion of the "semitendinosus"?

O- Ischium
I- tibia

120

What is the primary action of the "semitendinosus"?

extends thigh and flexes knee

121

What is the origin and insertion of the "gastrocnemius"?

O- femur
I- calcaneus

122

What is the primary action of the "gastrocnemius"?

plantar flexes foot

123

What is the origin and insertion of the "soleus"?

O- tibia and femur
I- calcaneus

124

What is the primary action of the "soleus"?

plantar flexes foot

125

What is the primary action of the "tibialis anterior"?

PRIME MOVER of dorsiflexion

126

What is the primary action of the "flexor hallucis longus"?

flexes great toe

127

What is the primary action of the "flexor digitorum longus"?

flexes toes

128

What is the primary action of the "tibialis posterior"?

PRIME MOVER of foot inversion

129

What is the primary action of the "peroneous (fibularis) longus"?

plantar flexes and everts foot

130

What is the primary action of the "peroneous (fibularis) brevis"?

plantar flexes and everts foot

131

What is the primary action of the "flexor carpi ulnaris"?

flexes wrist

132

What is the primary action of the "flexor carpi radialis"?

flexes wrist

133

What is the primary action of the "palmaris longus"?

WEAK wrist flexor

134

What is the primary action of the "flexor digitorum superficialis"?

flexes wrist and digits 2-5

135

What is the primary action of the "flexor pollisis longus"?

flexes thumb

136

What is the primary action of the "extensor carpi ulnaris"?

extends wrist

137

What is the primary action of the "extensor carpi radialis longus"?

extends wrist

138

What is the primary action of the "extensor carpi radialis brevis"?

extends wrist

139

What is the primary action of the "extensor digitorum"?

PRIME MOVER of finger extension