Muscles- Lab 22,23,24,25 Flashcards Preview

Anatomy And Phisiology > Muscles- Lab 22,23,24,25 > Flashcards

Flashcards in Muscles- Lab 22,23,24,25 Deck (105):
1

Epicranius

Raises eyebrows; retracts scalp

2

Nasalis

Widens nostrils

3

Orbicularis oculi

Closes eyelids as in blinking

4

Orbicularis oris

Closes lips; protrudes lips as for kissing

5

Risorius

Draws corner of mouth laterally

6

Zygomaticus major

Raises corners of mouth as when smiling and laughing

7

Zygomaticus minor

Raises corners of mouth as in smiling and laughing

8

Buccinator

Compresses cheeks inward as when blowing air

9

Platysma

Draws angle of mouth downward as when pouting or expressing horror

10

Masseter

Elevates mandible

11

Temporalis

Elevates mandible

12

Lateral pterygoid

Depresses and protracts mandible and moves it from side to side as when grinding food

13

Medial pterygoid

Elevates mandible and moves it from side to side as when grinding food

14

Sternocleidomastoid

Flexion of head and neck; rotation of head to left or right

15

Trapezius

Extends head (as a synergist); rotates scapula; various fibers raise scapula, pulls scapula medially, or pull scapula and shoulder down

16

Scalenes

Elevates ribs one and two; Flexion and rotation of the neck

17

Splenius capitis

Extends head; rotates head

18

Semispinalis capitis

Extends head; rotates head

19

Digastric

Opens mouth; depresses mandible; elevates hyoid bone

20

Stylohyoid

Retracts and elevates hyoid bone

21

Mylohyoid

Elevates hyoid bone during swallowing

22

Sternohyoid

Depresses hyoid bone

23

Omohyoid

Depresses hyoid bone

24

Sternothyroid

Depresses larynx

25

Thyrohyoid

Depresses hyoid bone; elevates larynx

26

Pectoralis minor

Pulls scapula forward and downward; raises ribs

27

Serratus anterior

Pulls scapula anteriorly (protracts scapula)

28

Rhomboid major

Retracts and elevates scapula

29

Rhomboid minor

Retracts and elevates scapula

30

Levator scapulae

Elevates scapula

31

Pectoralis major

Flexes, adducts, and rotates arm medially

32

Latissimus dorsi

Flexes, adducts, and rotates arm medially

33

Deltoid

Abducts, extends, and flexes arm

34

Teres major

Extends, adducts, and rotates the arm medially

35

Coracobrachialis

Flexes and adducts the arm

36

Supraspinatus

Abducts the arm

37

Infraspinatus

Rotates arm laterally

38

Teres minor

Rotates arm laterally

39

Subscapularis

Rotates arm medially

40

Biceps brachii

Flexes elbow and supinates forearm and hand

41

Brachialis

Flexes elbow

42

Triceps brachii

Extends elbow

43

Brachioradialis

Flexes elbow

44

Anconeus

Extends elbow

45

Supinator

Supinates forearm and hand

46

Pronator teres

Pronates forearm and hand

47

Pronator quadratus

Pronates forearm and hand

48

Palmaris longus (sometimes absent)

Flexes wrist

49

Flexor Capri radialis

Flexes wrist and abducts hand

50

Flexor carpi ulnaris

Flexes wrist and adducts hand

51

Flexor digitorum superficialis

Flexes fingers and wrist

52

Flexor digitorum profundus

Flexes fingers 2-5

53

Flexor pollicis longus

Flexes thumb

54

Extensor digitorum

Extends fingers

55

Extensor carpi radialis brevis

Extends wrist and abducts hand

56

Extensor carpi ulnaris

Extends wrist and adducts hand

57

Extensor digiti minimi

Extends finger 5 (pinky)

58

Extensor pollicis longus

Extends thumb

59

Abductor pollicis longus

Abducts thumb

60

Extensor indicis

Extends finger 2 (pointer)

61

Extensor pollicis brevis

Extends thumb

62

Quadratus lumborum

Extends vertebral column; lateral flexion

63

Erector spinae (3 columns of muscles)
-iliocostalis
-longissimus
-spinalis

Extends vertebral column; lateral flexion

64

Internal oblique

Tenses abdominal wall; compresses abdominal contents; aids in trunk rotation

65

External oblique

Tenses abdominal wall; compresses abdominal contents; aids in trunk rotation

66

Rectus abdominis

Flexes vertebral column; compresses abdominal contents

67

Transversus abdominis

Compresses abdominal contents

68

coccygeus

supports pelvic viscera

69

Levator ani

supports pelvic viscera and provides sphincter like action in anal canal and vagina

70

bulbospongiosus

Males: assists emptying of urethra and assists in erection of penis
Females: constricts vagina and assists in erection of clitoris

71

superficial transverse perineal muscle

supports pelvic viscera

72

psoas major

flexes thigh at hip; flexes trunk at hip (when thigh is fixed)

73

Ischiocavernosus

Males: erects penis
Females: erects clitoris

74

Gluteus Maximus

extends thigh at hip

75

Iliacus

flexes thigh at hip; flexes trunk at hip (when thigh is fixed)

76

gluteus minimus

abducts and medially rotates thigh

77

gluteus medius

abducts and medially rotates thigh

78

piriformis

abducts and laterally rotates thigh

79

tensor fasciae latae

abducts and medially rotates thigh

80

adductor longus

adducts and flexes thigh

81

pectineus

adducts and flexes thigh

82

adductor brevis

adducts thigh

83

adductor magnus

adducts thigh; posterior portion extends thigh, and anterior portion flexes thigh

84

sartorius

flexes, abducts, and laterally rotates thigh at hip; flexes leg at knee

85

gracilis

adducts thigh and flexes leg at knee

86

vastus lateralis (quadriceps femoris group)

extends leg at knee

87

Rectus femoris (quadriceps femoris group)

extends leg at knee; flexes thigh at hip

88

vastus intermedius

extends leg at knee

89

vastus medialis (quadriceps femoris group)

extends leg at knee

90

semitendinosus (hamstring group)

flexes leg at knee; rotates leg medially; extends thigh

91

biceps femoris (hamstring group)

flexes leg at knee; rotates leg laterally; extends thigh

92

Tibialis anterior

Dorsiflexion and inversion of the foot

93

semimembranosus (hamstring group)

flexes leg at knee; rotates leg medially; extends thigh

94

Extensor hallucis longus

Extends great toe and dorsiflexion

95

Extensor digitorum longus

Extends toes 2-5 and dorsiflexion

96

Gastrocnemius

Plantar flexion of foot and flexes knee

97

Fibularis tertius

Dorsiflexion and eversion of foot

98

Plantaris

Plantar flexion of foot and flexes knee

99

Soleus

Plantar flexion of foot

100

Flexor digitorum longus

Flexes toes 2-5 and plantar flexion and inversion of the foot

101

Tibialis posterior

Plantar flexion and inversion of the foot

102

Fibularis longus

Plantar flexion and eversion; also supports arch

103

Flexor hallucis longus

Flexes great toe and plantar flexes foot

104

Extensor carpi radialis longus

Extends wrist and abducts hand

105

Fibularis brevis

Plantar flexion and eversion of foot