Pelvic Organs and Female External Genitalia Session 27 Flashcards

1
Q

what is the uterus

A

hollow muscular organ

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2
Q

what does the uterus communicate with

A

laterally uterine tubes

inferiorly vagina

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3
Q

what r the divisions of the uterus

A

fundus, body and cervix

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4
Q

what is anteflexed

A

position of the body of uterus

bent forward on the superior surface of the bladder

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5
Q

what is anterverted

A

position of junction between body and cervix

tilted forwards

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6
Q

what r the three layers of the wall of the uterus and what is their function

A

endometrium- uterine lining for implantation of blastocyte
myometrium- middle muscle layer
perimetrium- outer lining of peritoneum

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7
Q

where is the pouch of douglas adn what is it lined by

why is it important

A

behind uterus in front of rectum
lined by peritoneum
deepest part of peritoneal cavity

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8
Q

arterial supply of uterus and this arterys origin

A

uterine artery from internal iliac from common iliac from abdominal aorta

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9
Q

what is the internal os and external os

A

internal os: communication of cervix and uterine cavity

external os: communication of cervix and vagina

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10
Q

what is teh ectocervix

A

portion of cervix projecting into teh vagina

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11
Q

what is the cervical canal

A

narrow lumen between two os

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12
Q

what is the cervix’s position stabilised by (2)

A

levator ani and ligments

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13
Q

what r vaginal fornices and how many r there

A

gap between edge of bottom of cervix and vagina

3- ant, pos and lateral

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14
Q

blood supply of cervix

A

uterine artery

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15
Q

where does the fallopian tube run

A

upper edge broad ligament

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16
Q

divisions of fallopian tube (4) and description

A

fimbrae: finger like projections, capture ovum from ovary
infundibulum: funnel shaped
ampulla: dilated, widest section, fertilisation here
isthmus: narrow section

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17
Q

function of fallopian tubes

A

carry ova from ovary to uterine cavity

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18
Q

blood supply of fallopian tubes

A

from ovarian and uterin artery

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19
Q

is the position of ovary fixed. where is it usually found

A

no

between internal and external iliac arteries

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20
Q

arterial supply of ovary and origin

A

ovarian artery from abd aorta

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21
Q

what holds the ovary in place

A

attached to posterior aspect of broad ligament by suspensory ligament of ovary (mesovarium)

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22
Q

what is the function of vagina (2)

A

female organ of sexual intercourse

excretory duct of uterus

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23
Q

what r the organs posterior (3) and anterior (2) to the vagina

A

anterior: bladder, urethra
posterior: pouch of douglas, rectum and anal canal

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24
Q

arterial supply of vagina and origin of this

A

vaginal artery from internal iliac from common iliac from and aorta

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25
Q

what structure does the vagina pass through and how does that split it up

A

pelvic floor
upper 2/3= in pelvic cavity
lower 1/3 in perineum

26
Q

what is the vulva

A

female external genitalia

27
Q

arterial supply of vulva and origin

A

internal pudendal, internal iliac

28
Q

innervation of erectile tissue

A

parasympathetic

29
Q

sympathetic innervation of vulva (4)

A

ilioinguinal
genital branch of GF
pudendal
posterior cutaneous of thigh

30
Q

what is the mons pubis and what does it cause

A

mound of fatty tissue in front of pubic symphysis

causes elevation of hair bearing skin

31
Q

what is the labia majora and where does it join

A

hair bearing folds of skin

at mons pubis superiorly

32
Q

what is the clitoris, what is it made of and what happens to it during sexual arousal

A

sensitive tissue, corpora cavernosa adn corpus spongiosum

engorged during sexual arousal

33
Q

what is the vestibule and what 3 things does it contain

A

area between the labia majora

vaginal opening, urinary meatus and vestibualr glands

34
Q

what is the urinary meatus and what two structures is in between (female)

A

opening of urethra

clitorus and vagina

35
Q

what is the peritoneal classification of the bladder

A

infraperitoneal

36
Q

arterial amd venous supply of bladder and origin of this

A

vesical artery/ vein, internal illiac artery/ vein

37
Q

how much urine can the bladder hold

A

500ml in adult

38
Q

where is the bladder in relation to the peritoneum

A

below peritoneum

39
Q

what is the trigone and where is it

A

smooth-walled triangular area posterior aspect of bladder

40
Q

what is a rudimentry valve formed by and why is this needed

A

ureters entering trigone at an angle

reduces reflux of urine when bladder is full

41
Q

what is the function of the rugae in the bladder

A

for expansion

42
Q

what is the detrusor msucle and where is it and what does it do

A

specialsied smooth muscle in wall of bladder, contracts to forcibly expel urien

43
Q

tell me about IUS (where, muscle, control)

A

at base of bladder, opens into urethra
smooth muscle
involuntary

44
Q

tell me about EUS (where m/f, muscle, control)

A

males- after prostate, female= after deep perineal pouch
skeletal
voluntary

45
Q

somatic motor innervation (what and nerves)

A

EUS

pudendal S2-4

46
Q

sympathetic innervation (what and nerves)

A

hypogastric T12-L2

relaxes detrusor, contracts IUS (urine storage)

47
Q

parasympathetic innervation (what and nerves)

A

contracts detrusor and relaxes IUS= micturition

pelvic splachnic S2-4

48
Q

explain the bladder stretch reflex arc

A

stretch of bladder wall= visceral afferent fibres to sacral plexus
synapse directly onto motor neurones
parasympathetic efferent for contraction

49
Q

spinal cord injury above sacral level 2 impacts and overall effect

A
  1. ascending pathway interrupted (not aware of bladder stretch)
  2. descneding pathway interrupted (EUS permanently relaxed)
    = bladder empties as it fills
50
Q

spinal cord injury at/below sacral plexus

A

afferent fibres cannot synpase with parasympathetic

relfex arc doesn’t work= bladder fills with urine constantly and IUS is permanently contracted

51
Q

2 flexures of rectum and direction of curve

A
sacral flexure (ant)
anorectal flexure (post)
52
Q

function of rectum

A

storage of faeces

53
Q

why sacral flexure

A

curves anteriorly to follow curvature of sacrum

54
Q

why anorectal flexure

A

curves posteriorly

puborectalis muscle pulls on it

55
Q

what is the anal canal in between

A

rectum and anus

56
Q

location of anal canal

A

in anal triangle of perineum

57
Q

what is the pectinate line and what does it mark

A

divides superior and inferior anal canal

transition of endoderm (hindgut) to ectoderm

58
Q

compare arterial supply above and below the pectinate line

A
above= superior rectal arteries, inferior mesenteric
below= middle + inf rectal arteries, internal iliac
59
Q

compare venous drainage above and below the pectinate line

A
above= portal system to the liver
below= to IVC, skips liver
60
Q

compare histology above and below the pectinate line

A
above= columnar
below= stratified squamous
61
Q

compare nervous supply above and below the pectinate line

A
above= inferior hypogastric plexus (para and symp)
below= pudendal (somatic motor)
62
Q

what encircles above and below pectinate line

A
above= internal anal sphincter
below= external anal sphincter