Pelvis and Perineum, Snell Flashcards Preview

Anatomy > Pelvis and Perineum, Snell > Flashcards

Flashcards in Pelvis and Perineum, Snell Deck (100):
1

Pelvis is divided into 2 parts by the

Pelvic brim

2

Pelvic brim is formed by (3)

1) Sacral promontory
2) Iliopectineal line
3) Symphysis pubis

3

Above the pelvic brim

False pelvis

4

Below the pelvic brim

True pelvis

5

4 bones of bony pelvis

1) 2 hip bones
2) Sacrum
3) Coccyx

6

Pelvic inlet is aka

Pelvic brim

7

Boundaries of pelvic outlet (3)

1) Coccyx
2) Ischial tuberosities
3) Pubic arch

8

Main function of SI joint

Transmit weight of body from vertebral column to bony pelvis

9

SI joint: Type of joint

Synovial

10

Symphysis pubis: Type of joint

Cartilaginous

11

T/F Great deal of movement is possible at the sacrococcygeal joint

T

12

Imaginary line joining the central points of the AP diameters of the inlet and outlet

Axis of pelvis

13

Curved course taken by the baby's head as it descends through the pelvis during childbirth

Axis of pelvis

14

Distance between lower margin of symphysis pubis and sacral promontory

Diagonal conjugate

15

Normal length of diagonal conjugate

13 cm

16

Normal distance between 2 ischial tuberosities

10cm

17

Shallowest wall of pelvis

Anterior

18

Anterior pelvic wall is formed by (2)

1) Pubic bones
2) Symphysis pubis

19

Posterior pelvic wall is formed by

1) Sacrum
2) Coccyx
3) Piriformis

20

Lateral pelvic wall is composed of (4)

1) Hip bone below inlet
2) Obturator membrane
3) Obturator internus
4) Sacrospinous and sacrotuberous ligament

21

Structure that almost completely closes the obturator foramen

Obturator membrane

22

Small gap in the obturator membrane

Obturator canal

23

Obturator canal transmits

Obturator nerve and vessels

24

Triangular pelvic ligament

Sacrospinous ligament

25

Prevent lower end of sacrum and coccyx from being rotated at the SI joint

Sacrospinous and sacrotuberous ligaments

26

Pelvic diaphragm is formed by (2)

1) Levator ani muscles
2) Coccygeus

27

Pelvic diaphragm is incomplete at what portion

Anterior

28

Anterior defect in the pelvic diaphragm transmits (2)

1) Urethra
2) Vagina in females

29

Widest diameter of the pelvic inlet

Transverse

30

Visceral pelvic fascia around the cervix is called

Parametrium

31

Nerve supply: Coccygeus

S4-5

32

Lumbar sympathetic trunk and pelvic sympathetic trunk come together where

In front of coccyx

33

Constitute the PSY part of ANS in the pelvis

Pelvic splanchnic nerves

34

Pelvic splanchnic nerves: Arise from

S2,3,4

35

Pelvic splanchnic nerves: Preganglionic fibers synapse in ganglia of

Hypogastric plexus

36

Musculofascial structure that fills the gap of the pubic arch

Urogenital diaphragm

37

Urogenital diaphragm: Formed by

1) Sphincter urethrae
2) Deep transverse perineal muscles

38

Urogenital diaphragm: Fascial layers

1) Superior fascial layer
2) Inferior fascial layer

39

Urogenital diaphragm: Inferior fascial layer is aka

Perineal membrane

40

Small mass of fibrous tissue attached to the center of the posterior margin of the urogenital diaphragm

Perineal body

41

Perineal body: Male vs female, larger

Female

42

Perineal body: Attachement for

Muscles in the perineum

43

Perineal body: Supports what other structure in females

Posterior vaginal wall

44

Pelvic diaphragm: Levator ani muscles

1) Iliococcygeus
2) Pubococcygeus
3) Puborectalis

45

Pelvic muscles

1) Piriformis
2) Obturator internus
3) Coccygeus
4) Levator ani

46

Pelvic muscle that covers the lateral wall of the pelvic cavity

Obturator internus

47

Pelvic muscles: Insert to the greater trochanter of femur

1) Obturator internus
2) Piriformis

48

Pelvic muscle: Originates from ischial spine

Coccygeus

49

Coccygeus: Nerve supply

Sacral nerve

50

Coccygeus: Degenerates forming

Sacrospinous ligament

51

Pelvic muscle: Constricts the rectum and pulls it forward

Levator ani

52

Pelvic muscle: Forms a sling around the anorectal junction, kinking it anteriorly

Puborectalis

53

The membranous layer of the superficial fascia of the abdomen continues down the perineum to form the

Colles fascia

54

The Colles fascia is attached to the

Margins of the pubic arch on each side

55

Rupture of penile urethra may be followed by extravasation of urine into

1) Scrotum
2) Perineum
3) Penis
4) Anterior abdominal wall, deep to the membranous layer of the superficial fascia

56

Urine from rupture of penile urethra is excluded from the thigh because of

Attachment of superficial abdominal fascia to the deep fascia of the thigh

57

Ovary: Attached to the back of the broad ligament by

Mesovarium

58

Suspensory ligament of the ovary: Contents

Ovarian vessels and nerves

59

Ovarian capsule

Tunica albuginea

60

Ovary: Outermost epithelium

Germinal epithelium

61

Ovarian follicles: Medulla vs cortex of ovary

Cortex

62

Ovarian fossa: Bounded by

External and internal iliac arteries

63

Connects the mesovarium to the lateral pelvic wall

Suspensory ligament of the ovary

64

Ovarian ligaments: Extends from the medial margin of the ovary to the lateral wall of the uterus

Round ligament of the ovary

65

The round ligament of the ovary is the adult derivative of

Upper gubernaculum

66

The round ligament of the uterus is the adult derivative of

Lower gubernaculum

67

The ovarian vein drains into the ___ on the right

IVC

68

The ovarian vein drains into the ___ on the left

Left renal vein

69

Ovary: Lymphatic drainage

Paraaortic nodes at L1

70

Ovary: Kept in position by

Mesovarium

71

Time in which the broad ligament is lax hence ovaries may prolapse into the pouch of Douglas causing pain during sexual intercourse

After pregnancy

72

Fallopian tube: Most common site of fertilization

Ampulla

73

Fallopian tube: Blood supply

Uterine and ovarian arteries

74

Fallopian tube: Drainage

Uterine and ovarian veins

75

Fallopian tube: Lymphatic drainage

Internal iliac and paraortic nodes

76

Anterior vs posterior wall of vagina: Cervix pierces the vagina at

Anterior wall

77

Attaches the cervix and upper end of vagina to the lateral pelvic walls

Transverse cervical/cardinal ligaments

78

Broad ligament: Contents

1) Uterine tubes
2) Round ligaments of ovaries and uterus
3) Uterine and ovarian vessels, nerves, and lymphatics

79

T/F The broad ligament provide little support to the uterus

T

80

Extends from the superolateral angle of the uterus through the inguinal canal, to the subcutaneous tissue of the labia majora

Round ligament of the uterus

81

Assists in keeping the uterus anteroflexed

Round ligament of the uterus

82

Uterus: Blood supply

1) Uterine artery from internal iliac
2) Ovarian artery

83

Uterus: Lymphatic drainage

1) Fundus: Paraaortic nodes
2) Body and cervix: Internal and external iliac nodes
3) Superficial inguinal nodes

84

External os: Nulliparous

Circular

85

External os: Parous

Fishmouth

86

Important structures that may be damaged in childbirth causing prolapse of uterus

1) Levator ani muscles
2) Transverse cervical ligament
3) Pubocervical ligament
4) Sacrocervical ligament

87

Superficial perineal pouch, boundaries: Inferior

Colles fascia

88

Superficial perineal pouch, boundaries: Superior

Urogenital diaphragm

89

Superficial perineal pouch, boundaries: Posterior

Attachment of Colles fascia to the posterior border of urogenital diaphragm

90

Superficial perineal pouch, boundaries: Lateral

Attachment of Colles fascia and urogenital diaphragm to the pubic arch

91

Superficial perineal pouch, boundaries: Anterior

Communicates freely with potential space between Scarpa fascia and anterior abdominal muscles

92

Contents of superficial perineal pouch, males

1) Root of penis
2) Superficial perineal muscle
3) Bulbospongiosus
4) Ischiocavernosus
5) Perineal body
6) Perineal branch of the pudendal nerve

93

T/F Deep perineal pouch is a closed space

T

94

Deep perineal pouch: Lies within

Urogenital diaphragm

95

Deep perineal pouch: Contents in males

1) The membranous part of the urethra.
2) The sphincter urethrae.
3) The bulbourethral glands.
4) The deep transverse perineal muscles.
5) The internal pudendal vessels.
6) The dorsal nerve of the penis.

96

Deep perineal pouch: Contents in females

1) Part of the urethra
2) Part of the vagina
3) Sphincter urethrae
4) Deep transverse perineal muscles
5) Internal pudendal vessels
6) Dorsal nerve of the clitoris

97

Delineates deep from superficial perineal pouch

Perineal membrane

98

Contents of superficial perineal pouch, females

1) Root of clitoris
2) Superficial perineal muscle
3) Bulbospongiosus
4) Ischiocavernosus
5) Perineal body
6) Perineal branch of pudendal nerve
7) Greater vestibular glands

99

Greater vestibular glands are aka

Bartholin gland

100

Most important ligement that prevents uterine prolapse

Uterosacral ligament
SOURCE: Boundless.com