Pelvis and Perineum, Snell Flashcards Preview

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

Pelvis is divided into 2 parts by the

A

Pelvic brim

2
Q

Pelvic brim is formed by (3)

A

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

3
Q

Above the pelvic brim

A

False pelvis

4
Q

Below the pelvic brim

A

True pelvis

5
Q

4 bones of bony pelvis

A

1) 2 hip bones
2) Sacrum
3) Coccyx

6
Q

Pelvic inlet is aka

A

Pelvic brim

7
Q

Boundaries of pelvic outlet (3)

A

1) Coccyx
2) Ischial tuberosities
3) Pubic arch

8
Q

Main function of SI joint

A

Transmit weight of body from vertebral column to bony pelvis

9
Q

SI joint: Type of joint

A

Synovial

10
Q

Symphysis pubis: Type of joint

A

Cartilaginous

11
Q

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

A

T

12
Q

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

A

Axis of pelvis

13
Q

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

A

Axis of pelvis

14
Q

Distance between lower margin of symphysis pubis and sacral promontory

A

Diagonal conjugate

15
Q

Normal length of diagonal conjugate

A

13 cm

16
Q

Normal distance between 2 ischial tuberosities

A

10cm

17
Q

Shallowest wall of pelvis

A

Anterior

18
Q

Anterior pelvic wall is formed by (2)

A

1) Pubic bones

2) Symphysis pubis

19
Q

Posterior pelvic wall is formed by

A

1) Sacrum
2) Coccyx
3) Piriformis

20
Q

Lateral pelvic wall is composed of (4)

A

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

21
Q

Structure that almost completely closes the obturator foramen

A

Obturator membrane

22
Q

Small gap in the obturator membrane

A

Obturator canal

23
Q

Obturator canal transmits

A

Obturator nerve and vessels

24
Q

Triangular pelvic ligament

A

Sacrospinous ligament

25
Q

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

A

Sacrospinous and sacrotuberous ligaments

26
Q

Pelvic diaphragm is formed by (2)

A

1) Levator ani muscles

2) Coccygeus

27
Q

Pelvic diaphragm is incomplete at what portion

A

Anterior

28
Q

Anterior defect in the pelvic diaphragm transmits (2)

A

1) Urethra

2) Vagina in females

29
Q

Widest diameter of the pelvic inlet

A

Transverse

30
Q

Visceral pelvic fascia around the cervix is called

A

Parametrium

31
Q

Nerve supply: Coccygeus

A

S4-5

32
Q

Lumbar sympathetic trunk and pelvic sympathetic trunk come together where

A

In front of coccyx

33
Q

Constitute the PSY part of ANS in the pelvis

A

Pelvic splanchnic nerves

34
Q

Pelvic splanchnic nerves: Arise from

A

S2,3,4

35
Q

Pelvic splanchnic nerves: Preganglionic fibers synapse in ganglia of

A

Hypogastric plexus

36
Q

Musculofascial structure that fills the gap of the pubic arch

A

Urogenital diaphragm

37
Q

Urogenital diaphragm: Formed by

A

1) Sphincter urethrae

2) Deep transverse perineal muscles

38
Q

Urogenital diaphragm: Fascial layers

A

1) Superior fascial layer

2) Inferior fascial layer

39
Q

Urogenital diaphragm: Inferior fascial layer is aka

A

Perineal membrane

40
Q

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

A

Perineal body

41
Q

Perineal body: Male vs female, larger

A

Female

42
Q

Perineal body: Attachement for

A

Muscles in the perineum

43
Q

Perineal body: Supports what other structure in females

A

Posterior vaginal wall

44
Q

Pelvic diaphragm: Levator ani muscles

A

1) Iliococcygeus
2) Pubococcygeus
3) Puborectalis

45
Q

Pelvic muscles

A

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

46
Q

Pelvic muscle that covers the lateral wall of the pelvic cavity

A

Obturator internus

47
Q

Pelvic muscles: Insert to the greater trochanter of femur

A

1) Obturator internus

2) Piriformis

48
Q

Pelvic muscle: Originates from ischial spine

A

Coccygeus

49
Q

Coccygeus: Nerve supply

A

Sacral nerve

50
Q

Coccygeus: Degenerates forming

A

Sacrospinous ligament

51
Q

Pelvic muscle: Constricts the rectum and pulls it forward

A

Levator ani

52
Q

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

A

Puborectalis

53
Q

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

A

Colles fascia

54
Q

The Colles fascia is attached to the

A

Margins of the pubic arch on each side

55
Q

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

A

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

56
Q

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

A

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

57
Q

Ovary: Attached to the back of the broad ligament by

A

Mesovarium

58
Q

Suspensory ligament of the ovary: Contents

A

Ovarian vessels and nerves

59
Q

Ovarian capsule

A

Tunica albuginea

60
Q

Ovary: Outermost epithelium

A

Germinal epithelium

61
Q

Ovarian follicles: Medulla vs cortex of ovary

A

Cortex

62
Q

Ovarian fossa: Bounded by

A

External and internal iliac arteries

63
Q

Connects the mesovarium to the lateral pelvic wall

A

Suspensory ligament of the ovary

64
Q

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

A

Round ligament of the ovary

65
Q

The round ligament of the ovary is the adult derivative of

A

Upper gubernaculum

66
Q

The round ligament of the uterus is the adult derivative of

A

Lower gubernaculum

67
Q

The ovarian vein drains into the ___ on the right

A

IVC

68
Q

The ovarian vein drains into the ___ on the left

A

Left renal vein

69
Q

Ovary: Lymphatic drainage

A

Paraaortic nodes at L1

70
Q

Ovary: Kept in position by

A

Mesovarium

71
Q

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

A

After pregnancy

72
Q

Fallopian tube: Most common site of fertilization

A

Ampulla

73
Q

Fallopian tube: Blood supply

A

Uterine and ovarian arteries

74
Q

Fallopian tube: Drainage

A

Uterine and ovarian veins

75
Q

Fallopian tube: Lymphatic drainage

A

Internal iliac and paraortic nodes

76
Q

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

A

Anterior wall

77
Q

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

A

Transverse cervical/cardinal ligaments

78
Q

Broad ligament: Contents

A

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

79
Q

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

A

T

80
Q

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

A

Round ligament of the uterus

81
Q

Assists in keeping the uterus anteroflexed

A

Round ligament of the uterus

82
Q

Uterus: Blood supply

A

1) Uterine artery from internal iliac

2) Ovarian artery

83
Q

Uterus: Lymphatic drainage

A

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

84
Q

External os: Nulliparous

A

Circular

85
Q

External os: Parous

A

Fishmouth

86
Q

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

A

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

87
Q

Superficial perineal pouch, boundaries: Inferior

A

Colles fascia

88
Q

Superficial perineal pouch, boundaries: Superior

A

Urogenital diaphragm

89
Q

Superficial perineal pouch, boundaries: Posterior

A

Attachment of Colles fascia to the posterior border of urogenital diaphragm

90
Q

Superficial perineal pouch, boundaries: Lateral

A

Attachment of Colles fascia and urogenital diaphragm to the pubic arch

91
Q

Superficial perineal pouch, boundaries: Anterior

A

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

92
Q

Contents of superficial perineal pouch, males

A

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

93
Q

T/F Deep perineal pouch is a closed space

A

T

94
Q

Deep perineal pouch: Lies within

A

Urogenital diaphragm

95
Q

Deep perineal pouch: Contents in males

A

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
Q

Deep perineal pouch: Contents in females

A

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
Q

Delineates deep from superficial perineal pouch

A

Perineal membrane

98
Q

Contents of superficial perineal pouch, females

A

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
Q

Greater vestibular glands are aka

A

Bartholin gland

100
Q

Most important ligement that prevents uterine prolapse

A

Uterosacral ligament

SOURCE: Boundless.com