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MBBS1 Abdomen and Pelvis > Irene's Incontinence > Flashcards

Irene's Incontinence Flashcards

1
Q

Where is the external urethral meatus in males?

A

At the tip of the glans of the penis

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2
Q

Where do ureters enter the bladder?

A

At the superolateral margins of the trigone

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3
Q

Where are the four parts of the male urethra?

A

The urethra leaving the bladder is the pre-prostatic urethra, the part which passes through prostate is prostatic urethra, the part which passes through the deep perineal pouch is the membranous urethra and the part passing through the body of the penis (made of corpus spongiosum tissue) is the spongy urethra

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4
Q

What do bulbourethral glands do?

A

Lubricate the male urethra

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5
Q

What is the fold of peritoneum sandwiched between uterus and bladder called?

A

Vesicouterine pouch

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6
Q

What is the smooth muscle of the scrotum called?

A

Dartos muscle, covered in dartos fascia

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7
Q

How is the dartos muscle innervated?

A

Sympathetic fibres accompanying the genital branch of the genitofemoral nerve

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8
Q

Where is the superior hypogastric plexus located, what does it turn into?

A

Within the abdomen at the bifurcation of the aorta, the superior hypogastric plexus descends into the pelvis and bifurcates as the right and left hypogastric nerves

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9
Q

Where is the iliac tubercle?

A

Lateral to the iliac crest

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10
Q

Where is the bladder in relation to the peritoneum?

A

Inferior

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11
Q

Which blood vessels supply the bladder?

A

The vesical vessels which are branches of the internal iliac vessels

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12
Q

Where do ilium, ischium and pubis join?

A

Acetabulum (socket of femur)

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13
Q

What does urogenital hiatus allow passage of in the female?

A

Urethra and vagina

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14
Q

Which artery supples pelvis?

A

Internal iliac artery

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15
Q

What is the apex of the bladder attached to in males and females?

A

The umbilicus via the median umbilical ligament

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16
Q

Where is the bladder covered in peritoneum in both sexes?

A

On the superior surface

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17
Q

How does deep perineal pouch relate to levator ani?

A

It is inferior

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18
Q

What is the name of the pouch behind the seminal vesicles in males and what does it do?

A

The pouch of peritoneum is called the ‘retrovesical’ pouch and it separates bladder and rectum

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19
Q

What bounds the false, or greater, pelvis?

A

The space enclosed by the pelvic girdle above and in front of the pelvic brim. It is bounded on either side by the ilium; in front it is incomplete, presenting a wide interval between the anterior borders of the ilia.

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20
Q

Where is the external urethral sphincter located?

A

In the urogenital diaphragm, in the deep perineal pouch

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21
Q

What does duasteride cause?

A

Inhibition of androgen- stimulated prostatic hyperplasia

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22
Q

Which sphincter do only males have and why?

A

The internal urethral sphincter is only present in males and constricts during ejaculation to prevent semen from entering the bladder

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23
Q

Name a muscarinic antagonist

A

Oxybutynin

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24
Q

What is the inner layer of the superficial fascia of the perineum called?

A

Colle’s fascia

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25
Q

When is most essential diagnostic information obtained in the consultation?

A

During the patient interview

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26
Q

Which muscle plugs the gap between piriformis and levator ani at the back of the pelvic floor?

A

Coccygeus

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27
Q

What does the puboprostatic ligament do in males?

A

It is continuous with the pubovesical ligament above but instead of wrapping round the urethra it wraps around the prostate

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28
Q

Where does the urethra leave the bladder?

A

Inferiorly at the inferior margin of trigone

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29
Q

Which two strong ligaments anchor the sacrum into place where do they arise from?

A

Sacrospinous arising from ischial spine and sacrotuberous and ischial tuberosity respectively

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30
Q

How does the female ureter get from kidney to bladder?

A

From lateral wall of the pelvis it passes OVER the external iliac artery then turns medially and crosses OVER the obliterated umbilical artery then it passes UNDER the uterine artery before finally reaching the bladder

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31
Q

Where is the major effect of urinary incontinence?

A

On a patient’s social life

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32
Q

Which structures pierce the deep perineal pouch?

A

Urethra in males and females but not the anal canal

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33
Q

What is parasympathetic innervation to the bladder?

A

Pelvic plexus

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34
Q

What is sympathetic innervation to the bladder?

A

Hypogastric plexus

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35
Q

Where is the prostate in relation to the urogenital hiatus?

A

Superior

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36
Q

Describe the course of the pudendal nerve as it enters the perineum.

A

Out of the pelvis laterally through the greater sciatic foramen, then enters the perineum by passing through the lesser sciatic foramen along the lower border of obturator internus where it is enclosed in a sheath of fascia known as the pudendal canal.

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37
Q

How does the bladder act as a valve to prevent urine reflux without actually having a physical anatomical valve?

A

When the bladder contracts the muscular wall closes the opening of ureters into the bladder

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38
Q

What makes up the lateral, anterior wall of the pelvis?

A

Obturator internus

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39
Q

What causes male LUTS most often?

A

Prostate hypertrophy

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40
Q

Where is the pouch of Douglas?

A

The ‘rectouterine’ pouch or pouch of Douglas is a fold of peritoneum which is posterior to the uterus and upper vagina and sandwiched between them and the rectum

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41
Q

What is the median umbilical ligament derived from embryologically?

A

The urachus

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42
Q

Which nervous plexuses ultimately supply the pelvic organs? Where are they?

A

Right and left inferior hypogastric plexuses (with both sympathetic and parasympathetic inputs) which lie either side of the rectum

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43
Q

Where do the urethra (as well as prostate in males and vagina in females lie)?

A

In the urogenital hiatus in front of the perineal body

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44
Q

What is the part of the bony pelvis that a person sits on?

A

Ischial tuberosity

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45
Q

What bony features does the ischium have?

A

A spine and a tuberosity and a ramus which fuses with that of the inferior ramus of the pubis so is the ischiopubic

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46
Q

What does the internal urethral sphincter do?

A

Prevents semen reflux

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47
Q

What does the sacrotuberous ligament join?

A

Ischial tuberosity

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48
Q

By what degree is the pelvic inlet tilted?

A

60 degrees

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49
Q

What are the triangles of the perineum?

A

They are formed by drawing an imaginary line between the ischial tuberosities. Anteriorly, the triangle is the urogenital triangle and posteriorly is the anal triangle

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50
Q

What causes the urothelium to have such low permeability?

A

Uroplakin plaques

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51
Q

What kind of joint is the sacroiliac joint?

A

Synovial

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52
Q

How does the male ureter get from kidney to bladder?

A

From lateral wall of the pelvis it passes OVER the external iliac artery then turns medially and crosses OVER the obliterated umbilical artery then it passes UNDER the ductus deferns before finally reaching the bladder

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53
Q

What is the inferior fascia of the deep perineal pouch called?

A

Perineal membrane

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54
Q

Where does the anal canal lie?

A

Between perineal and anococcygeal bodies

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55
Q

Where are the muscles surrounding urethra and vagina located?

A

In deep perineal pouch

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56
Q

Where do the pelvic floor muscles arise from mainly?

A

The fascia that lines the obturator internus and nearby bony areas

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57
Q

What divides urogenital hiatus and anal sphincter?

A

Perineal body

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58
Q

What is a blunter?

A

Patients who prefer less information to be given during the consultation

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59
Q

How does sperm reach the urethra?

A

Via ejaculatory ducts which enter the prostatic urethra posteriorly

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60
Q

What is the principle blood supply to the pelvis?

A

The internal iliac artery

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61
Q

What do Skene’s glands do?

A

Lubricate the urethra in females

62
Q

What does ductus deferens insert into?

A

Ejaculatory ducts

63
Q

What is the sympathetic contribution to the inferior hypogastric plexuses?

A

Mostly from the superior hypogastric plexus, which is purely sympathetic.

64
Q

What can benign prostatic hypertrophy be treated with?

A

A1 antagonist

65
Q

What is the main function of puborectalis?

A

Sling around the anorectal junction to pull it forwards and aid rectal continence

66
Q

What glands are behind the bladder in the male?

A

The seminal vesicles

67
Q

Which artery gives supply to prostate and seminal vesicles in men?

A

The inferior vesicle

68
Q

Where is micturition centre located?

A

In the brainstem, in the pons

69
Q

Which arteries supply the bladder?

A

Vesical arteries from the internal iliac

70
Q

What is the name of the spaces either side of the anal canal?

A

Ischioanal fossae

71
Q

What does rho kinase do?

A

Inhibits myosin phosphtase

72
Q

What is somatic innervation to the external urethral sphincter?

A

Pudendal nerve

73
Q

What is the superficial fasica of the scrotum?

A

Dartos fascia

74
Q

Where does the piriformis muscle run?

A

Arises from the sacrum and passes out through the greater sciatic foramen

75
Q

Which nerves supply the bladder?

A

Parasympathetic nerves (pelvic-splanchnic nerves) from S2-S4

76
Q

Which part of the bladder does not contract?

A

Trigone

77
Q

Name an A1 selective inhibitor

A

Silodosin

78
Q

What kind of muscle are internal and external urethral sphincters made of?

A

External is skeletal, internal is smooth

79
Q

What is the name of the region inferior to pelvic floor muscles?

A

Perineum

80
Q

How does the venous supply in the pelvis compare to the arterial supply?

A

The veins match the pattern of the arteries but form major plexuses around some organs like prostate gland and rectum

81
Q

What are the most important receptors in causing detrusor contraction?

A

M3

82
Q

What kind of urethra does the bulb of the penis contain?

A

Spongy

83
Q

Which bend in the male cannot be straightened?

A

The bend at the penile bulb

84
Q

Where is the perineal body in relation to the deep pouch?

A

On the posterior border

85
Q

What bony feature divides sciatic notches?

A

Ischial spine

86
Q

What is the posterior lateral muscular margin of the pelvis?

A

Piriformis

87
Q

Why must we be careful when inserting a catheter in males?

A

It may catch on the valvula fossae navicularis, which is a fold of mucosa that hangs down inside the external urethral orifice, producing pain

88
Q

What constricts the urethra in females?

A

External urethral sphincter, compressor urethrae and sphincter urethrovaginalis

89
Q

What is levator ani?

A

A transverse sheet of skeletal muscle formed of iliococcygeus, pubococcygeus and puborectalis

90
Q

What muscle controls micturition in females?

A

The external urethral sphincter

91
Q

Which muscles together are known as the pelvic diaphragm?

A

Coccygeus and levator ani

92
Q

What forms the medial posterior part of the pelvis brim?

A

Promontory of the sacrum

93
Q

What is the urogenital hiatus?

A

The gap at the front of the deep perineal pouch that allows passage of nerves and blood vessels

94
Q

Where does the superior hypogastric plexus receive supply from?

A

Upper lumbar contributions from the intermesenteric plexus as well as from L3 and L4 splanchnic nerves

95
Q

Which ligaments join hip bone to sacrum?

A

Sacroiliac

96
Q

Which nerves innervate levator ani?

A

Perineal branch of S3 and S4 and the pudendal nerve (S2, 3, 4) which supplies the pelvic floor from below

97
Q

What are the two superficial fascia layers of the anterior abdominal wall?

A

Camper’s fascia is the outer fatty layer and Scarpa’s fascia is the inner membranous layer

98
Q

Where are the two places that the male urethra bends, making catheterisation more difficult?

A
  1. When the flaccid penis hangs down it creates a bend in the urethra, this can be easily fixed by lifting the penis to make a straight line for the catheter
  2. Between bulb of penis and deep perineal pouch, this cannot be corrected so the catheter must be gently guided around it.
99
Q

How does the uterus relate to the bladder?

A

It is tilted forwards onto the superior surface of the bladder and connected to the vagina

100
Q

Where is the external urethral meatus in females?

A

In the vestibule of the vulva, between the two labia minoria anterior to the opening of the vagina

101
Q

In who is the pubourethral ligament found?

A

In females only

102
Q

What is the major benefit to the doctor of good communication?

A

Reduced conflict and litigation

103
Q

Which nerves supply pelvic floor?

A

S3/4

104
Q

Why are females more prone to cystitis than males?

A

They have a shorter urethra

105
Q

What are pelvic floor muscles anchored to?

A

Arcus tendineus

106
Q

What prevents urinary reflex?

A

Passive occlusion by pressure at the vesicoureteric junction

107
Q

What is the large hole between pubis and ischium called?

A

Obturator foramen

108
Q

Describe the course of the ducts involved in semen production in males.

A

The ducts of seminal vesicles join to the ducts of the testes (ductus deferens) which are located above the seminal vesicles and this forms the ejaculatory duct. This duct enters the posterior wall of the prostate gland and then into the prostatic urethra.

109
Q

Why can enlargement of the prostate in males lead to incomplete emptying of the bladder?

A

The prostate gland is inferior to the bladder and may push the bladder up if enlarged resulting in stagnant pools of urine

110
Q

Give three branches of the pudendal nerve and where they supply.

A

Inferior rectal nerve to the external anal sphincter and anal skin.
Perineal nerve to scrotum, urethra, the labia
The dorsal nerve to penis/clitoris

111
Q

What is the issue with information given to patients about their condition?

A

Too complex

112
Q

What does cAMP cause in smooth muscle?

A

Inhibition of Ca2+ influx

113
Q

Where does the bladder sit in the females?

A

Directly above the deep perineal pouch

114
Q

What does the deep perineal pouch lie between?

A

The ischial tuberosities and the pubic symphysis

115
Q

Which part of levator ani includes the anal sphincter?

A

Puborectalis

116
Q

What does Ley’s cognitive model claim?

A

Patient satisfaction depends on patient understanding

117
Q

What do the sacrospinous and sacrotuberous ligaments do?

A

Prevent sacrum tilting too much

118
Q

How is bladder fullness detected?

A

Stretch of urothelial cells

119
Q

What are the wings of the sacrum?

A

The ala

120
Q

What is the perineum?

A

The region below the pelvic floor containing anal canal, urethra and vagina in females.

121
Q

Which nerves control the internal urethral sphincter?

A

Sympathetic nerves L1-L2

122
Q

What bony spines does the ilium have?

A

The anterior superior iliac spine and the anterior inferior iliac spine

123
Q

When is information from a consultation best recalled?

A

Early or late in consultation

124
Q

Which muscle moves the urethra towards the vagina?

A

Compressor urethrae

125
Q

What does the pelvic girdle consist of?

A

Ilium, ischium and pubis

126
Q

Where are the seminal vesicles located?

A

Behind the bladder

127
Q

Name a B3 specific antagonist

A

Mirabegron

128
Q

What do PDE5 inhibitors cause?

A

Increased production of nitric oxide

129
Q

What bony features does the pubis have?

A

Tubercle, crest and superior and inferior rami

130
Q

Where do ureters pass in females?

A

Anterior to external iliac artery and posterior to uterine artery

131
Q

Where does the apex of the bladder sit in both sexes?

A

Behind pubic symphsis

132
Q

Where do ureters pass in males?

A

Anterior to external iliac artery and obliterated umbilical artery

133
Q

What is the pubovesical ligament?

A

It is short ligament arising from the pubis which inserts near the neck of the bladder helping to support urethra

134
Q

What does stimulation of M2 receptors cause?

A

Inhibition of adenylate cyclase

135
Q

What does the superficial perineal pouch contain?

A

Everything lying below the deep pouch such as external genitalia

136
Q

Where does obturator internus arise from?

A

Arising from an area around the obturator foramen

137
Q

What are the attachments of levator ani?

A

Pubis in front, the fascia that lines the obturator internus at the side and the ischial spine posteriorly. In the midline it attaches to a pair of fibrous masses called the perineal body and the anococcygeal body as well as the coccyx

138
Q

Which structures transverse levator ani and where?

A

Urethra (and vagina in females) and the anal canal

139
Q

What is the triangular smooth region between the three tubes that enter and leave the bladder?

A

The trigone

140
Q

What is the key nerve of the perineum?

A

The pudendal nerve

141
Q

What bounds the true, or lesser, pelvis?

A

The space enclosed by the pelvic girdle and below the pelvic brim: between the pelvic inlet and the pelvic floor. This cavity is a short, curved canal, deeper on its posterior than on its anterior wall.

142
Q

What is the deep fascia of the penis called?

A

Buck’s fascia

143
Q

What ligament is the pubovesical ligament continuous with in the female?

A

The pubocervical ligament that runs back over the bladder to the cervix of the uterus

144
Q

Which part of urethra is closest to bladder in males?

A

Pre-prostatic

145
Q

What is the pelvic inlet?

A

The superior margin of the true pelvis

146
Q

What does the deep perineal pouch contain?

A

Bands of muscle, the membranous part of the male urethra and the bulbourethral gland of males as well as the female vagina

147
Q

What does botulinum toxin cause?

A

Prevent of acetylcholine release

148
Q

Describe the three foraminae of the pelvis

A

The greater and lesser sciatic foraminae created by the sacrospinous and sacrotuberous ligaments and the obturator foramen which is medial to the sciatic foraminae and covered in membrane except for a small gap, the obturator canal, that allows vessels and nerves to reach the leg

149
Q

Where is the apex of the bladder?

A

Anterior

150
Q

What muscles cover the iliac fossae?

A

Iliacus muscles

MBBS1 Abdomen and Pelvis (6 decks)

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