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APA1313 - Musculoskeletal Anatomy > axial skeleton - muscles of spine and rib cage > Flashcards

axial skeleton - muscles of spine and rib cage Flashcards

1
Q

origins of sternocleidomastoid

A

sternal head: superior manubrium

clavicular head: medial 1/3 of clavicle

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2
Q

insertion of sternocleidomastoid

A

mastoid process of temporal bone

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3
Q

actions of sternocleidomastoid

A

bilateral: head & neck extension
unilateral: lateral flexion & contralateral rotation

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4
Q

origin of anterior scalene

A

transverse processes of C3-C6

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5
Q

insertion of anterior & middle scalenes

A

1st rib

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6
Q

actions of anterior, middle, & posterior scalenes

A

bilateral: neck flexion
unilateral: lateral flexion and contralateral rotation
elevation of 1st & 2nd rib

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7
Q

origin of middle scalene

A

transverse processes of C2-C7

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8
Q

origin of posterior scalene

A

transverse processes of C5-C7

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9
Q

insertion of posterior scalene

A

2nd rib

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10
Q

origins of splenius capitis

A

ligamentum nuchae & spinous processes of C7-T3

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11
Q

insertions of splenius capitis

A

mastoid process of temporal bone & lateral portion of superior nuchal line of occiput

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12
Q

actions of splenius capitis

A

bilateral: head and neck extension
unilateral: lateral flexion and ipsilateral rotation

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13
Q

origin of splenius cervicis

A

spinous processes of T3-T6

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14
Q

insertion of splenius cervicis

A

transverse processes of C1-C3

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15
Q

actions of splenius cervicis

A

bilateral: neck extension
unilateral: lateral flexion & ipsilateral rotation

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16
Q

what are the deep back muscles (erector spinae)

A

iliocostalis, longissimus, & spinalis

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17
Q

origin of cervicis in iliocostalis

A

ribs 3-6

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18
Q

origin of thoracis in iliocostalis

A

ribs 7-12

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19
Q

origin of lumborum in iliocostalis

A

iliac crest & thoracolumbar aponeurosis

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20
Q

insertion of cervicis in iliocostalis

A

transverse processes of C4-C6

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21
Q

insertion of thoracis in iliocostalis

A

ribs 1-6

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22
Q

insertion of lumborum in iliocostalis

A

ribs 7-12

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23
Q

actions of iliocostalis

A

trunk extension & ipsilateral flexion of the trunk

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24
Q

origin of capitis in longissimus

A

transverse processes of T1-T4 & articular processes of C4-C7

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25
Q

origin of cervicis in longissimus

A

transverse processes of T4-T5

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26
Q

origin of thoracis in longissimus

A

transverse process of L1-L5

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27
Q

insertion of capitis in longissimus

A

mastoid process

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28
Q

insertion of cervicis in longissimus

A

transverse processes of C2-C6

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29
Q

insertion of thoracis in longissimus

A

transverse processes of T1-L2 & ribs 9-10

30
Q

actions of longissimus

A

trunk extension in head, cervical, and thoracic, trunk & head ipsilateral flexion

31
Q

origin of capitis in spinalis

A

ligementum nuchae

32
Q

origin of cervicis in spinalis

A

spinous processes of C7-T2

33
Q

origin of thoracis in spinalis

A

spinous processes of T11-L2

34
Q

insertion of capitis in spinalis

A

superior nuchal line of occipital bone

35
Q

insertion of cervicis in spinalis

A

spinous processes of C2-C4

36
Q

insertion of thoracis in spinalis

A

spinous processes of T1-T8

37
Q

actions of spinalis

A

trunk extension in head, cervical, and thoracic
ipsilateral flexion
head & neck flexion

38
Q

origin of semispinalis

A

transverse processes of C4-T12

39
Q

insertions of semispinalis

A

spinous processes of C2-T4;

between inferior & superior nuchal lines in occipital bone

40
Q

actions of semispinalis

A

trunk extension;

contralateral rotation of head, neck, & trunk

41
Q

origin of quadratus lumborum

A

post iliac crest;

iliolumbar ligament

42
Q

quadratus lumborum

A

transverse processes of L1-L4;

rib 12

43
Q

actions of quadratus lumborum

A

trunk extension;
lateral trunk flexion;
depresses last rib during forced inhalation

44
Q

what are the deepest back muscles?

A

intertransversarius, rotatores, multifidus, & interspinalis

45
Q

origin of intertransversarius

A

transverse processes of C1-L5

46
Q

insertion of intertransversarius

A

transverse processes of vertebra located above

47
Q

action of intertransversarius

A

lateral flexion

48
Q

origin of rotatores

A

transverse processes of C1-L5

49
Q

insertion of rotatores

A

spinous processes of vertebra located above

50
Q

action of rotatores

A

bilateral extension & contralateral rotation

51
Q

origin of multifidus

A

post sacrum;
posterior iliac spine;
transverse processes of C5-L4

52
Q

insertion of multifidus

A

spinous processes of vertebrae located 2-4 levels above

53
Q

action of multifidus

A

bilateral extension & contralateral rotation

54
Q

origin of interspinalis

A

spinous processes of C3-L5

55
Q

insertion of interspinalis

A

spinous processes of vertebra located above

56
Q

action of interspinalis

57
Q

what are the abdominal muscles?

A

external & internal obliques, rectus abdominis, & transversus abdominis

58
Q

origin of external oblique

A

external surfaces of ribs 5-12

59
Q

insertion of external oblique

A

iliac crest;
pubic tubercle;
linea alba

60
Q

action of external oblique

A

bilateral trunk flexion;
ipsilateral flexion;
contralateral rotation

61
Q

origin of internal oblique

A

thoracolumbar aponeurosis;
iliac crest;
inguinal ligament

62
Q

insertion of internal oblique

A

internal surface of ribs 10-12;

abdominal aponeurosis

63
Q

actions of internal oblique

A

bilateral trunk flexion;
ipsilateral flexion;
rotation

64
Q

origin of rectus abdominis

A

pubic symphysis

65
Q

insertion of rectus abdominis

A

ribs 5-7;
costal cartilage;
xiphoid process

66
Q

actions of rectus abdominis

A

bilateral trunk flexion & ipsilateral flexion

67
Q

origin of transversus abdominis

A

internal surfaces of ribs 7-12

68
Q

insertion of transversus abdominis

A

abdominal aponeurosis

69
Q

actions of transversus abdominis

A

compression of abdominal muscles to support abdominal organs

70
Q

muscles used for inspiration

A

diaphragm, external intercostal, serratus posterior superior, levator costarum, quadratus lumborum, scalenes, pectoralis minor, & serratus anterior

71
Q

muscles used for expiration

A

internal intercostal, serratus posterior inferior, internal oblique, external oblique, rectus abdominis, subcostals, & transverse thoracis

APA1313 - Musculoskeletal Anatomy (13 decks)

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