Muscles (O,I,A) Flashcards Preview

Anatomy > Muscles (O,I,A) > Flashcards

Flashcards in Muscles (O,I,A) Deck (80):
1

Epicranius (occipitofrontalis)

A: moves scalp, eyebrows/ retracts scalp
O: Frontal bone/Superior nachal line
I: Epicranial aponeruosis

2

Orbicularis Occuli

A: Close eye

3

Orbicularis Oris

Compress and purse lips

4

Masseter

A: Elevates and protracts mandible
O: Zygomatic arch
I:Coronoid process, lateral surface and angle of mandible

5

Temporalis

Elevate and protract mandible

6

Sternocleidomastoid

A: Unilateral: rotation of head in opposite direction. Bilateral: Flexes neck
O: manubrium and sternal end of clavicle.
I: Mastoid Process

7

Diaphragm

Contraction causes flattening during inspiration which expands the thoracic cavity

8

External intercostals

Elevate ribs during quiet and forced inspiration

9

Internal intercostals

Depress ribs during forced expiration

10

Rectus abdominis

Flexes vertebral column , compresses abdominal wall

11

External abdominal oblique

Unilateral: lateral flexion of vertebral column
Bilateral: Flexes vertebral column and compresses abdominal wall

12

Internal abdominal oblique

Unilateral: lateral flexion of vertebral column
Bilateral: Flexes vertebral column and compresses abdominal wall

13

Transverse

Unilateral: laterally flexes vertebral column
Bilateral: Flexes vertebral column and compresses abdominal wall

14

Pectoralis minor

Protracts and depresses scapula

15

Serratus anterier

agonist in scapula protraction. Superiorly rotates scapula, stabilizes scapula

16

Rhomboideus minor and major

(minor on top)
elevates and retracts scapula. inferiorly rotates scapula

17

Trapezius

Superior fiber: elevates and superiorly rotate scapula
Middle fiber: retract scapula
Inferior fiber: depress scapula

18

Latissimus dorsi

Agonist of arm extension, adducts and medially rotates arm

19

Pectoralis Major

Agonist of arm flexion, adducts and medially rotates arm.

20

Deltoid

A: Anterior: flex and medially rotate arm. idle: prime mover of arm abduction. Posterior: extends and laterally rotate arm.
O: Acromial end of clavicle. acromiom and spine of scapula
I:Deltoid tuberosity of humerus

21

Supraspinatus

Abducts arm

22

infraspinatus

Adducts and laterally rotates arm

23

subscapularis

Medially rotates arm

24

teres minor

Adducts and laterally rotates arm

25

Teres major

Extend, adducts, medially rotates arm

26

Biceps brachii

A: flexes arm, forearm, supinator of forearm
O: Supraglenoid of tubercle of scapula and coranoid process.
I: radial tuberosity and bicipital aponeruosis

27

Triceps brachii

A: extends and adducts arm
O: Infraglenoid tubercle of scapula
I: Olecranon of ulna

28

Brachialis

Primary flexor of forearm

29

Brachioradialis

Flexes forearm

30

Flexor carpi radialis

flexes wrist and abducts hand

31

Palmaris longus

weak wrist flexor

32

flexor carpi ulnaris

flexes wrist and adducts hand

33

Extensor carpi radialis longus

Extends wrist, abducts hand

34

Extensor carpi radialis brevis

Extends wrist, abducts hand

35

Extensor digitorum

Extends wrist extends 2-5th fingers

36

Extensor carpi ulnaris

extends wrist, adducts hand

37

Iliacus

Flexes thigh

38

Psoas

A: flexes thigh
O: Transverse processes and bodies of T12-L5
I: Lesser trochanter of femur

39

Sartorius

Flexes thigh and laterally rotates thigh. Flexes leg, medially rotates leg

40

Rectus Femoris

A: Flexes thigh, extends leg
O: Anterior inferior iliac spine
I: Quadriceps tendon to patella to patellar ligament to tibial tuberosity

41

Vastus Lateralis

A: Extends leg
O: greater trochanter and line aspera
I: Quadriceps tendon to patella to patellar ligament to tibial tuberosity

42

Vastus medialis

A: extends leg
O: intertrochanteric line and line aspera of femur
I: Quadriceps tendon to patella to patellar ligament to tibial tuberosity

43

Vastus intermedius

A: extends leg
O: Anterolateral surface of femur
I: Quadriceps tendon to patella to patellar ligament to tibial tuberosity

44

Adductor Magnus

Adducts thigh, (adductor part)flexes thigh, (hamstring part)
extends and laterally rotates thigh.

45

Adductor longus

adducts thigh, flexes thigh

46

Gracilis

Adducts and flexes thigh

47

Tensor fasciae latae

Abducts thigh, medially rotates thigh

48

Gluteus Maximus

A: Extends thigh, laterally rotates thigh
O: Iliac crest, sacrum, coccyx
I: Iliotibial tract of fascia lata,linea aspera and gluteal tuberosity of femur

49

Gluteus medius

Abducts thigh, medially rotates thigh.

50

Biceps femoris

A: extends thigh, flexes leg, laterally rotates leg
O: Ishial tuberosity and linea aspera
I: head of fibula

51

Semitendinosus

A: Extends and flexes leg. medially rotates leg
O: Ischial tuberosity
I: Proximal medial surface of tibia

52

Semimembranosis

A: Extends thigh and flexes leg. medially rotates leg
O: Ischial tuberosity
I: Posterior surface of medial condyle of tibia

53

Extensor digitorum longus

Extends toes 2-5. dorsiflexes the foot

54

Tibialis anterior

Dorsiflexes foot , inverts foot

55

fibularis longus

Everts foot, weak plantar flexor

56

Gastrocnemius

A: Flexes leg, plantar flexes foot
O: Superior and posterior urfaces of lateral and medial condyles of femur
I: calcaneus

57

Soleus

Plantar flexes foot

58

Flex the arm

biceps brachii, pectorals major*, deltoid*

59

Extend the arm

Triceps brachii, latissimus dorsi*, deltoid*(Posterior fibers)

60

Abducts the arm

Deltoid (Middle)* supraspinatus

61

adducts the arm

latissimus dorsi*,pectorals major*, teres major/minor, infraspinatus

62

medially rotates arm

subscapularis*, deltoid (anterior), latissimus dorsi, pectoralis major, teres major

63

laterally rotates arm

infraspinatus*, teres minor*, deltoid (posterior)

64

flex the forearm

Brachialis*, biceps brachii, brachioradialis

65

Extend the forearm

Triceps brachii*

66

Supinate the forearm

Biceps brachii*

67

Flex the hand

flexor carip radialis, palmaris longus, flexor carpi ulnaris

68

Extend the hand

Extensor digitorum, extensor carpi radialis brevis, extensor carpi radialis longus, extensor carpi ulnaris

69

Flex the thigh

Iliacus, psoas, sartorius, rectus fermoris, gracilis, adductor longus, adductor magnus

70

Extend the thigh

gluteus maximus, adductor magnus, biceps femoris, semimembranosis, semitendonosis.

71

Abduct the thigh

gluteus medius, tensor fasciae latea

72

Adducts the thigh

adductor longus, adductor magnus, gracilis

73

Medially rotate the thigh

gluteus medius, tensor fasciae latae

74

laterally rotates thigh

Adductor magnus, gluteus maximus, sartarius, biceps femoris

75

Flex the leg

Sartorius, gracilis, adductor, adductor longus adductor magnus, semimembranosus, semitendonosis

76

Extend the leg

Rectus femoris, castus lateralis, intermedius mediali

77

Dorsiflex the foot

extensor digitorum longus, tibialis anterior

78

plantar flex the foot

gastrocnemius, soleus

79

Inverts the foot

tibialis anterior

80

Evert the foot

fibularus longus