Set 8 Myology Flashcards Preview

NBCE Part 1 > Set 8 Myology > Flashcards

Flashcards in Set 8 Myology Deck (72):
1

What are the deep muscles of the back?

multifidus, rotators, intertransversarii, interspinalis, iliocostals, longissimus, and spinalis

2

What muscles make up the erector spinae muscle group?

iliocostalis, longissimus, and spinalis

3

What deep back muscles originate on the transverse process?

multifidis, rotators, intertransversarii, longissimus

4

What deep back muscles originate on the spinous process?

interspinalis and spinalis

5

What deep back muscles originate on the ilium?

iliocostalis

6

What deep back muscles insert on the transverse process?

intertransversarii and longissimus

7

What deep back muscles insert on the spinous process?

multifidus, rotators, interspinalis, and spinalis

8

What deep back muscles insert on the lamina?

rotators

9

What deep back muscles insert on the ribs?

iliocostalis and longissimus

10

What innervates all deep back muscles EXCEPT intertransversarii?

spinal nerve dorsal rami

11

What innervates intertransversarii?

spinal nerve dorsal rami and ventral rami

12

What is the action of multifidus?

external/contralateral rotation

13

What is the action of rotators?

extension and rotation

14

What is the action of intertransversarii?

lateral flexion

15

What is the action of interspinalis?

extension

16

What is the action of iliocostalis?

extension and ipsilateral flexion

17

What is the action of longissimus?

extension and ipsilateral flexion

18

What is the action of spinalis?

extension and ipsilateral flexion

19

What is the origin and insertion of external and internal intercostals?

lower border of the rib to the upper border of the rib below

20

What are the muscles of the thorax?

external intercostals, internal intercostals, transverse thoracic and subcostalis

21

What is the innervation to the muscles of the thorax?

intercostal

22

What is the origin and insertion of transverse thoracic?

posterior sternum /xiphoid and costal cartilages 2-6

23

What is the origin and insertion of subcostalis?

inner, lower ribs near angles and upper borders of ribs 2 and below

24

What are the muscles of the anterior abdominal wall?

external oblique, internal oblique, transverse abdominus, rectus abdominis, cremaster

25

What is the origin and insertion of external oblique?

external surface of ribs 5-12 and iliac crest/ASIS/pubic tubercle/linea alba

26

What is the origin and insertion of internal oblique?

inguinal ligament/iliac crest/thoracolumbar fascia and lower 4 costal cartilages/linea alba/pubic crest/pectineal line

27

What is the origin and insertion of transverse abdominus?

inguinal ligament/iliac crest/thoracolumbar fascia/lower costal cartilages and linea alba/pubic crest/pectineal line

28

What is the origin and insertion of rectus abdominus?

pubic crest/pubic symphysis and xiphoid/costal cartilages 5-7

29

What is the origin and insertion of cremaster?

inguinal ligament/lower internal oblique and pubic tubercle/pubic crest

30

What is the innervation of cremaster?

genitofemoral

31

What is the innervation of rectus abdominus?

intercostal (T7-T11) and subcostal (T12)

32

What is the innervation of transverse abdominus?

intercostal (T7-T11), subcostal (T12), iliohypogastric, and ilioinguinal - L1

33

What is the innervation of internal oblique?

intercostal (T7-T11), subcostal (T12), iliohypogastric, and ilioinguinal - L1

34

What is the innervation of external oblique?

intercostal (T7-T11) and subcostal (T12)

35

What abdominal muscles compress the abdomen?

external oblique, internal oblique, and transverse abdominus

36

What abdominal muscles flex the trunk?

external oblique and internal oblique

37

What abdominal muscles are used for forced expiration?

external oblique and internal oblique

38

What abdominal muscles depress the ribs?

transverse and rectus abdominis

39

What is the function of cremaster?

retracts testis

40

What is the origin and insertion of quadratus lumborum?

L3-L5 transverse processes/iliac crest/iliolumbar ligament and lower border of the last rib/L1-L3 transverse processes

41

What is the origin and insertion of psoas major?

T12-L5 transverse processes/bodies/discs and lesser trochanter

42

What is the origin and insertion of psoas minor?

T12-L1 bodies/discs and pectineal line/iliopectineal eminence

43

What is the innervation of quadratus lumborum?

subcostal, L1-L3

44

What is the innervation of psoas major?

L2-L3

45

What is the innervation of psoas minor?

L1

46

What is the action of quadratus lumborum?

depresses 12th rib and flexes trunk laterally

47

What is the action of psoas major?

flexes thigh and trunk

48

What nerve pierces psoas major?

femoral nerve

49

What is the action of psoas minor?

aids in flexing of trunk

50

What is the action of piriformis?

external rotation of the hip and abduction of the thigh

51

What is the action of obturator internus?

external rotation of the thigh

52

What is the action of pubococcygeus?

supports pelvic viscera

53

What is the action of puborectalis?

resists abdominal pressure

54

What is the action of iliococcygeus?

completes pelvic floor

55

What is the action of sphincter urethrae?

M: constricts urethra F: blends with vaginal wall

56

What is the action of ischiocavernosus?

M: erection F: constricts vaginal orifice (yes and no)

57

What is the action of bulbospongiosus?

M: erection

58

What are the branchial arches?

1,2,3,4,6

59

What is the CN associated with the first branchial arch?

V3, mandibular trigeminal

60

What is the CN associated with the second branchial arch?

VII, facial

61

What is the CN associated with the third branchial arch?

IX glossopharyngeal

62

What is the CN associated with the fourth branchial arch?

superior laryngeal of X vagus

63

What is the CN associated with the sixth branchial arch?

inferior laryngeal of X vagus

64

What is the innervation of piriformis?

S1-S2

65

What is the innervation of obturator internus?

nerve to obturator internus

66

What is the innervation of the levator ani muscles?

S3-S4 and pudenal

67

What are the levator ani muscles?

pubococcygeus, puborectalis, and iliococcygeus

68

What is the innervation of coccygeus?

S4-5

69

What is the innervation of sphincter urethrae?

pudendal

70

What does the pudendal nerve pass through?

the greater and lesser sciatic foramen

71

What is the innervation of deep transversus perinei?

pudendal

72

What is the innervation of ischiocavernosus, bulbospongiosus, and superficial transversus perinei?

perineal