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Unit II: Trunk > Muscles and Attachments of Trunk > Flashcards

Muscles and Attachments of Trunk Flashcards

1
Q

List the muscles of the thorax

A

internal and external intercostals, transversus thoracis

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2
Q

List the muscles of the abdomen

A

Cremaster, diaphragm, external oblique, internal oblique, quadratus lumborum, rectus abdominis, transversus abdominis

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3
Q

List the muscles of the pelvis

A

iliacus, psoas, piriformis, obturator internus, coccygeus, levator ani

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4
Q

List the muscles of the perinuem

A

bulbospongiosus, ischiocavernosus, sphincter ani externus, sphincter urethrae, compressor urethrae, sphincter urethrovaginalis, deep transverse perineus, superficial transverse perineus

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5
Q

What attaches to the body of the vertebrae?

A

psoas, diaphragm, ant. & post. longitudinal ligaments

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6
Q

What is the function of the costal facet?

A

articulate with the rib

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7
Q

What is the function of the vertebral foramen and canal?

A

houses spinal cord

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8
Q

What is the function of the intervertebral foramen (made up of the inf and sup vertebral notches)?

A

transmits spinal nerves and radicular vessels

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9
Q

What attaches to the transverse process?

A

erector spinae, psoas, levator scapulae and transversalis fascia

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10
Q

What is the function of the costotubercular facet?

A

articulates with rib

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11
Q

What is the function of the superior articular facet?

A

articulates with adjacent inferior articular facet

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12
Q

What is the function of the inferior articular facet?

A

articulates with adjacent superior articular facet

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13
Q

What attaches to the lamina?

A

ligamentum flavum

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14
Q

What attaches to the spinous process?

A

trapezius, rhomboids, latissimus dorsi, spinalis of the erector spinae, transversospinalis (semispinalis, multifidus and rotatares)

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15
Q

What is the function of the base of the sacrum?

A

articulates with the 5th lumbar vertebra

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16
Q

What attaches to the promontory?

A

anterior longitudinal ligament

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17
Q

What attaches to the pelvic surface?

A

piriformis

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18
Q

What is the function of the pelvic sacral foramina?

A

transmits ventral rami of sacral nerves and lateral sacral arteries

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19
Q

What attaches to the dorsal surface?

A

erector spinae, gluteus maximus, sacrotuberous ligament and sacrospinous ligament

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20
Q

What is the function of the dorsal sacral foramina?

A

transmits dorsal rami of sacral nerves and lateral sacral nerves

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21
Q

What attaches to the median sacral crest (i.e. spinous processes of the sacrum)?

A

erector spinae and gluteus maximus

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22
Q

What attaches to the lateral sacral crest?

A

erector spinae and gluteus maximus muscles

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23
Q

What is the function of the apex of the sacrum?

A

articulates with coccyx

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24
Q

What attaches to the coccyx?

A

coccygeus muscle

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25
Q

What is the function of the articular facet of the rib?

A

articulates with the body of the vertebrae

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26
Q

What attaches to the shaft of the ribs?

A

pectoralis major (3-5), serratus anterior, external, internal and innermost intercostal muscles, diaphragm, external oblique, quadratus lumborum (12th)

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27
Q

What is the function of the sacral canal?

A

houses sacral spinal roots

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28
Q

What attaches to the angle of the rib?

A

iliocostalis of erector spinae muscle

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29
Q

What is the function of the articular facet at the tubercle of the rib?

A

articulates with transverse process

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30
Q

What is the function of the costal groove of the rib?

A

houses intercostal nerves, arteries and veins

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31
Q

What attaches to the scalene tubercles on the 1st rib?

A

anterior scalene muscle

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32
Q

What runs through the grooves for the subclavian artery and vein?

A

subclavian artery and vein (on 1st rib)

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33
Q

What attaches to the manubrium?

A

pectoralis major

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34
Q

What attaches to the body of the sternum?

A

pectoralis major and transversus thoracis

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35
Q

What is the function of the clavicular notch and facet on the sternum

A

articulates with clavicle

36
Q

What is the function of the costal notches of the sternum body?

A

articulates with ribs 2-7

37
Q

What attaches to the xiphoid process of the sternum?

A

diaphragm and rectus abdominis

38
Q

What attaches to the iliac crest?

A

external oblique, internal oblique, transversus abdominis and quadratus lumborum

39
Q

What attaches to the anterior superior iliac spine?

A

inguinal ligament

40
Q

What traverses the greater sciatic notch?

A

piriformis, superior and inferior gluteal arteries, sciatic, pudendal, superior and inferior gluteal nerves

41
Q

What attaches to the iliopubic eminence?

A

pubofemoral ligament

42
Q

What attaches to the iliac fossa?

43
Q

What attaches to the iliac tuberosity?

A

dorsal scaroiliac, interosseous scaroiliac and iliolumbar ligaments

44
Q

What attaches to the body of the pubis?

A

levator ani

45
Q

What attaches to the crest of the pubis?

A

rectus abdominis

46
Q

What attaches to the pubic tubercle?

A

rectus abdominis and inguinal ligament

47
Q

What attaches to the pectin pubis (pectineal line)?

A

conjoint tendon, and lacunar and pectineal ligaments

48
Q

What is the function of the obturator groove?

A

transmits obturator nerve, artery and vein

49
Q

What attaches to the inferior pubic ramus?

A

ischiocevernosus and compressor urethrae muscles

50
Q

What is the function of the lesser sciatic notch?

A

transmits obturator internus tendon, pudendal n, and internal pudendal artery and vein

51
Q

What attaches to the ischial spine?

A

levator ani, coccygeus m. and scarospinous ligament

52
Q

What attaches to the ischial ramus?

A

ischiocavernosus and compressor urethrae m.

53
Q

What attaches to the ischial tuberosity?

A

sacrotuberous ligament

54
Q

Attachment: cremaster muscle

A

medial edge of internal oblique to spermatic cord

55
Q

Attachment: diaphragm

A

xiphoid process, inner surface of lower ribs and costal cartilages, medial and lateral arcuate ligaments, and lumbar vertebrae through the central tendon

56
Q

Blood supply to border of the diaphragm

A

musculophrenic

57
Q

Primary blood supply to diaphragm

A

inferior phrenic

58
Q

Attachment: external oblique

A

lower 8 ribs to rectus sheath and iliac creat

59
Q

Action: external oblique

A

flexion and rot of trunk, compression of cavity

60
Q

Innervation of external oblique

A

ventral rami T7-12

61
Q

Blood supply of external oblique

A

superior epigastric, inferior epigastric, subcostal, lower posterior intercostal, lumbar, superficial circumflex, and deep circumflex iliac

62
Q

Attachment: int oblique

A

thoracolumbar fascia to inguinal ligament, iliac crest and rectus sheath

63
Q

Action: internal oblique

A

flexion and rot of trunk, compression of cavity

64
Q

Innervation: int oblique

A

lower thoracic and L1 ventral rami

65
Q

Blood supply int oblique

A

superior epigastric, inferior epigastric, subcostal, lower posterior intercostal, lumbar, superficial circumflex, and deep circumflex iliac

66
Q

Attachment: quadratus lumborum

A

12th rib to lilolumbar ligament and iliac crest

67
Q

Action: quadratus lumborum

A

extension and lateral flexion of the trunk, fixes 12th rib during inspiration

68
Q

Innervation: quadratus lumborum

A

ventral rami T12-L3

69
Q

Blood supply: quadratus lumborum

A

subcostal, lumbar and iliolumbar

70
Q

Attachment: rectus abdominis

A

xiphoid process and adj. costal cartilages to pubic crest and tubercle

71
Q

Action: rectus abdominis

A

flexion of trunk and compression of cavity

72
Q

Innervation: rectus abdominis

A

lower thoracic ventral rami

73
Q

Blood supply: rectus abdominis

A

superior and inferior epigastric

74
Q

Attachment: transversus abdominis

A

lower six costal cartilages and thoracolumbar fascia to inguinal ligament, iliac crest and rectus sheath

75
Q

Action: transversus abdominis

A

compression of cavity

76
Q

Innervation: transversus abdominis

A

lower thoracic and L1 ventral rami

77
Q

Blood supply: transversus abdominis

A

superior epigastric, inferior epigastric, subcostal, lower posterior intercostal, lumbar, superficial circumflex iliac and deep circumflex iliac

78
Q

Attachment: Coccygeus

A

ischial spine and sacrospinous ligament to coccyx

79
Q

Action: Coccygeus

A

supports and compresses posterior pelvic floor

80
Q

Innervation:Coccygeus

A

ventral rami S4-S5

81
Q

Blood supply: Coccygeus

A

inf gluteal, int pudendal, and inf rectal

82
Q

Attachment: levator ani

A

pubic symphysis, obturator fascia and ischial spine to midline raphe and anoccygeal ligament

83
Q

Actions: levator ani

A

supports pelvic viscera and compresses rectum and vagina

84
Q

Innervation: levator ani

A

pudendal nerve (inf rectal branches) and S4

85
Q

Blood supply: levator ani

A

inf gluteal, internal pudendal, inf rectal and inf vesical

Unit II: Trunk (7 decks)

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