Practical Muscles Flashcards Preview

PT 506 Kinesiology > Practical Muscles > Flashcards

Flashcards in Practical Muscles Deck (72):
1

Anterior Digastric Origin

Digastric fossa of mandible

2

Posterior Digastric Origin

Mastoid notch of temporal bone

3

Anterior and Posterior Digastric insertion

Intermediate tendon to body and greater or of hyoid

4

Anterior and Posterior Digastric Action

With the infrahyoid muscles depresses mandible against resistance; and elevates and steadies hyoid during speaking and swallowing

5

Posterior Scalene Origin

Posterior tubercles of transverse processes of C5-C7 vertebrae

6

Posterior scalene insertion

External border of 2nd rib

7

Posterior scalene action

unilaterally flexes neck laterally to same side; bilaterally elevates 2nd rib during forced inspiration, and flexes cervical spine

8

Middle Scalene Origin

Posterior tubercles of transverse processes of C5-C7 vertebrae

9

Middle Scalene Insertion

Superior surface of 1st rib; posterior to groove for subclavian artery

10

Middle Scalene Action

Unilaterally flexes neck to same side; bilaterally elevates 1st rib during forced inspiration and flexes cervical spine

11

Anterior Scalene Origin

Transverse processes of C3-C6 vertebrae

12

Anterior Scalene Insertion

1st rib

13

Anterior Scalene Action

bilaterally flexes cervical spine; unilaterally laterally flexes cervical spine

14

Splenius Cervicis origin

Nuchal ligament and spinous processes of C7-T3 or T4 vertebrae

15

Splenius Cervicis Insertion

Tubercles of transverse processes of C1-C3 or C4 vertebrae

16

Splenius Cervicis Action

Unilaterally laterally flex neck and rotate head to same side; bilaterally extend head and neck

17

Longus Capitis Origin

Basilar part of occipital bone

18

Longus Capitis Insertion

Anterior tubercles of C3-C6 transverse processes

19

Longus Capitis Action

Unilaterally laterally flexes cervical spine to same side; bilaterally flexes cervical spine

20

Temporalis Origin

floor of temporal fossa and deep surface of temporal fascia

21

Temporalis Insertion

tip and medial surface of coronoid process and anterior border of ramus of mandible

22

Temporalis Action

Elevates mandible; posterior, more horizontal fibers are primary retractors of mandible

23

Masseter Origin

inferior border and medial surface of maxillary process of zygomatic arch

24

Masseter insertion

Angle and lateral surface of ramus of mandible

25

Masseter Action

Elevates mandible, closing jaws; superficial fibers make limited contribution to protrusion of mandible

26

Medial Pterygoid Origin

medial surface of lateral pterygoid plate and pyramidal process of palatine bone and tuberosity of maxilla

27

Medial Pterygoid Insertion

Medial surface of ramus of mandible, inferior to mandibular foramen

28

Medial Pterygoid Action

Acts synergistically with masseter to elevate mandible; contributes to protrusion; alternate unilateral activity produces smaller grinding movements

29

Lateral Pterygoid Origin

infratemporal surface and crest of greater wing of sphenoid and lateral surface of lateral pterygoid plate

30

Lateral Pterygoid Insertion

Joint capsule and articular disc of TMJ; pterygoid fovea on condyloid process of mandible

31

Lateral Pterygoid Action

Acting bilaterally, protracts mandible and depresses chin; acting unilaterally, swings jaw toward contralateral side

32

SCM sternal head origin

Anterior surface of manubrium of sternum

33

SCM Clavicular head origin

superior surface of medial third of clavicle

34

SCM Insertion

mastoid process of temporal bone and lateral half of superior nuchal line

35

SCM action

Unilaterally laterally flexes the neck ipsilaterally, and rotates the neck contralaterally; Bilaterally extends head at atlanto-occipital joint, flexes cervical vertebrae, and protrudes head

36

Rectus Capitis Posterior Major origin

Spinous process of vertebra C2

37

Rectus Capitis Posterior Major insertion

Lateral part of inferior nuchal line of occipital bone

38

Rectus Capitis Posterior Major action

Unilaterally rotates head to same side; bilaterally extends the head

39

External intercostal muscle origin

inferior border of ribs (fiber orientation inferomedial)

40

External intercostal muscle insertion

Superior border of ribs below

41

External intercostal muscle action

Elevation of the ribcage during inhalation

42

Internal intercostal muscle origin

Upper border of rib below (fibers run superomedially)

43

Internal intercostal muscle insertion

lower border of rib above

44

Internal intercostal muscle action

Depresses ribs

45

Longissimus cervicis origin

Transverse processes of T1-T5

46

Longissimus cervicis insertion

Transverse processes of C2-C6

47

Longissimus Cervicis action

unilaterally side bends neck to same side; bilaterally extends the neck

48

Longus Colli origin

Anterior tubercle of C1 vertebra (atlas); bodies of C1-C3 and transverse processes of C3-C6 vertebrae

49

Longus Colli Insertion

Bodies of C5-T3 vertebrae; transverse processes of C3-C5 vertebrae

50

Longus Colli action

unilaterally flexes neck with rotation (torsion) to opposite side; Bilaterally neck flexion

51

Rectus capitis Posterior minor origin

Posterior tubercle of posterior arch of vertebra C1

52

Rectus capitis posterior minor insertion

Medial part of inferior nuchal line of occipital bone

53

Rectus capitis posterior minor action

Unilaterally rotates head to same side; bilaterally extends head

54

Upper trapezius origin

inferior nuchal line of external occipital proterbuerance , medial third of superior nuchal line and spinous process of C7 (whole muscle= spinous process of C7-T12)

55

Upper Trapezius insertion

lateral 3rd of clavicle, acromion and spine of scapula

56

Upper trapezius action

elevation and upward rotation of the scapula

57

Splenius Capitis origin

Nuchal ligament and spinous processes of C7-T3 or T4 vertebrae

58

Splenius Capitis insertion

Fibers run superolaterally to mastoid process of temporal bone and lateral third of superior nuchal line of occipital bone

59

Splenius capitis action

unilaterally laterally flex and rotate head and neck to same side; bilaterally extend head and neck

60

Longissimus capitis origin

Transverse processes of T1-T5 & transverse processes of C4-C6/C7

61

Obliquus capitis inferior origin

Posterior tubercle of posterior arch of vertebra C2

62

Obliquus capitis inferior insertion

Transverse process of vertebra C1

63

obliquus capitis inferior action

unilaterally rotates head to the same side; bilaterally extends the head

64

Levator Scapulae origin

Posterior tubercles of transverse processes of C1-C4 vertebrae

65

Levator Scapulae insertion

medial border of scapula superior to the root of scapular spine

66

Levator scapulae action

Elevates scapula and tilts its glenoid inferiorly by rotating scapula

67

Obliquus capitis superior origin

Transverse process of vertebra C1

68

Obliquus capitis superior insertion

Occipital bone between superior and inferior nuchal lines

69

obliquus capitis superior action

unilaterally laterally flexes head to same side; bilaterally extends head

70

Semipinalis capitis origin

transverse processes of C7-T6 & articular processes of C4-C6

71

Semispinalis Capitis insertion

Between superior and inferior nuchal lines of occipital bone

72

Semispinalis capitis action

unilaterally rotates head and neck to opposite side; bilaterally extends head and neck