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Gross Anatomy 2 > Pelvic Contents and Anal and Urogenital Triangles > Flashcards

Pelvic Contents and Anal and Urogenital Triangles Flashcards

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1
Q

name the two pouches in the female peritoneum

A

rectouterine and vesicouterine pouches

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2
Q

where is the rectouterine pouch?

A

between the uterus and rectum

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3
Q

where is the vesicouterine pouch?

A

between the bladder and the uterus

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4
Q

name the pouch in the male peritoneum

A

vesicorectal pouch

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5
Q

where is the vesicorectal pouch?

A

between the rectum and bladder

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6
Q

what layers form the bladder wall? (superficial to deep)

A

detrusor muscle
mucosa
submucosa
transitional epithelium (uroethelium) arranged into rugae

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7
Q

which part of the bladder lies posterior to the pubic symphysis?

A

the apex (or urachus)

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8
Q

what muscle acts as both a coat of the bladder and at the neck of the circular sphincter vesicae?

A

detrusor (smooth) muscle

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9
Q

which part of the bladder does the trigone form?

A

the triangular non-contractile base

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10
Q

what enters and leaves the bladder at the trigone?

A

enters: ureters (x2)
exits: urethra

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11
Q

what ligaments hold the neck of the bladder in place in males?

A

puboprostatic ligaments

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12
Q

what ligaments hold the neck of the bladder in place in females?

A

pubovesical ligaments

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13
Q

what arteries supply the bladder in females (and where do they arise)?

A

upper part: superior vesical artery
lower part: vaginal artery
(both from the internal iliac)

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14
Q

what arteries supply the bladder in males (and where do they arise)?

A

upper part: superior vesical artery
lower part: inferior vesical artery
(both from the internal iliac)

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15
Q

what provides venous drainage of the bladder?

A

vesical plexus (to the internal iliac)

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16
Q

what provides nervous supply to the bladder?

A

ANS from the inferior hypogastric plexus

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17
Q

what provides lymphatic drainage of the ureter?

A

lumbar, common iliac, external iliac and internal iliac nodes as they descend towards the bladder

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18
Q

what provides lymphatic drainage of the urethra in males?

A

most to internal iliac

spongy urethra to deep inguinal nodes

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19
Q

what provides lymphatic drainage of the urethra in females?

A

most to internal iliac

some to sacral nodes

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20
Q

what provides lymphatic drainage of the bladder?`

A

most to internal iliac
some of superior to external iliac
some of neck to sacral nodes

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21
Q

at what vertebral levels are the rectum found?

A

from S3 to tip of coccyx

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22
Q

what parts of the rectum are covered in peritoneum or otherwise?

A

upper 1/3rd: covered in visceral peritoneum
middle 1/3rd: peritoneum on anterior surface
lower 1/3rd: infraperitoneal

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23
Q

what muscles surround the rectum?

A

levator ani
iliococcygeus
puborectalis

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24
Q

what arteries supply the rectum (and where do the arise from)?

A 
superior rectal (from inferior mesentric)
middle rectal (from internal iliac)
inferior rectal (from internal pudendal)
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25
what provides venous drainage of the rectum (and where do they drain to)?
``` superior rectal (to portal vein) middle rectal (to internal iliac) inferior rectal (to internal pudendal) ```
26
what provides lymphatic drainage of the rectum (and which region do they drain)?
pararectal (superior rectum) inferior mesenteric (superior rectum) internal iliac (inferior rectum, superior anal canal to pectinate line) superficial inguinal nodes (pectineal line to inferior anal canal)
27
what provides nervous supply to the rectum?
inferior hypogastric plexus
28
what ligaments support the uterus?
``` peritoneal ligament broad ligament of the uterus uterosacral (sacrocervical) ligament transverse sacral ligament pubocervical (pubovesical) ligament ```
29
what is the mesometrium?
the mesentery of the uterus, constitutes the majority of the broad ligament of the uterus (except the mesosalpinx and mesovarium) contains the ureter
30
what is the mesovarium?
portion of the broad ligament that suspends the ovaries
31
what is the mesosalpinx?
portion of the broad ligament that stretches from the ovary to the uterine tube
32
what artery supplies the uterine tube and fundus?
ovarian artery
33
what arteries supply the uterine body and cervix?
uterine artery | anastomoses between the ovarian and uterine arteries
34
what is the role of the round ligament of the uterus?
create a potential lymph pathway
35
what does the broad ligament of the uterus carry?
vessels, nerves and ligaments
36
what positions do the uterus normally lie in?
anterversion and anteflexion
37
define anteversion of the uterus
the long axis of the uterus is bent forward and the long axis of the vagina against the urinary bladder 90o
38
define anteflexion of the uterus
the long axis of the uterus is bent foward and the level of the internal orifice, with the long axis of the cervix 170o
39
how are the ovaries attached to the broad ligament?
by mesovarim
40
what ligaments support the ovaries?
ligament of the ovary | suspensory ligament of the ovary (containing the ovarian vessels)
41
what artery supplies the ovary?
ovarian artery (abdominal aorta @L2)
42
what provides venous drainage of the right ovary?
ovarian vein to IVC
43
what provides venous drainage of the left ovary?
ovarian to renal vein
44
what provides nervous supply to the ovaries?
the aortic plexus
45
what supplies lymphatic drainage of the ovary, uterine tube and fundus of the uterus?
aortic nodes at root of ovarian artery (@L2)
46
what supplies lymphatic drainage at the junction of the uterine tube and body?
superficial inguinal nodes
47
what supplies lymphatic drainage of the body of the uterus?
external iliac nodes (via broad ligament)
48
what supplies lymphatic drainage of the cervix?
internal iliac nodes (some to sacral)
49
what supplies lymphatic drainage of cervix and vagina?
internal iliac then to superficial inguinal nodes
50
what is the route of the vas deferens?
from epididymis of testis through the inguinal canal in the spermatic cord joins with the duct from the seminal vesicle to form the ejaculatory duct enters the prostate to meet the prostatic urethra forming the penile urethra
51
what is the role of the seminal vesicles?
secretes the liquid component of semen (mostly fructose)
52
what artery supplies the seminal vesicles?
branches of the inferior vesical artery and the prostatic artery
53
what is the role of the prostate?
produce proteolytic enzymes and acid phosphatase
54
what arteries supply the prostate?
internal pudendal, middle rectal and inferior vesical arteries
55
what provides venous drainage of the prostate?
deep dorsal vein of the penis --> plexus --> internal iliac vein
56
what provides lymphatic drainage of the prostate?
aortic nodes at the root of the testicular artery (@L2)
57
what holds the prostate in place?
pubo-prostati ligament | levatore prostate muscles
58
what forms the wall of the ischioanal (rectal) fossa?
ischial tuberosity and the rectum/anal canal
59
what forms the roof of the ischioanal (rectal) fossa?
levator ani (pelvic diaphragm)
60
what forms the floor of the ischioanal (rectal) fossa?
skin
61
what are the contents of the ischioanal (rectal) fossa?
branches of the pudendal nerve, artery and vein | adipose tissue
62
what are the boundaries of the anal triangle?
coccyx, sacrotuberous ligaments and a theoretical line between the ischial tuberosities
63
where is the urogenital triangle found?
anterior half of the perineum
64
what type of muscle forms the internal anal sphincter?
smooth muscle
65
what type of muscle forms the external anal sphincter?
skeletal muscle (voluntary)
66
what do the anal columns contain?
a terminal radicle of the superior rectal vessels, anal sinus related
67
at what point does the rectum become the anal canal?
when it pierces the pelvic floor
68
what is the function of the external anal canal?
closes the anus (aided by puborectalis)
69
where does the external anal sphincter run from and to?
perineal body to anococcygeal ligament
70
what arteries supply the external anal sphincter?
internal pudendal | inferior rectal
71
what venous system drains the external anal sphincter?
caval venous system
72
what drains the lymph from the external anal sphincter?
superficial inguinal nodes
73
what provides nervous supply to the external anal sphincter?
inferior rectal branch of the pudendal nerve (S2-4)
74
what two types of fascia are present in the urogenital fascia?
fatty and membranous
75
what forms the fatty fascia?
Camper's | superficial layer continuous with the ischiorectal fossa and the thigh
76
what forms the membranous fascia?
Scarpa's | deeper layer attached to the posterior border of the urogenital diaphragm and into the labia/scrotum
77
what happens to camper's fascia in the scrotum?
replaced by dartos smooth muscle
78
what is the urogenital diaphragm composed of?
superior layer of fascia (deep, blends with perineal body and membrane) sphincter urethra and deep transverse perineal muscles inferior layer of fascia (superficial, the perineal membrane)
79
what do the posterior layers of the urogenital diaphragm fuse with?
membranous superficial fascia and the perineal body
80
what is the space between the layers of the urogenital membrane called?
the deep perineal pouch
81
what does the deep perineal pouch contain in males?
``` urethra (and membranous urethra) sphincter urethrae deep transverse perineal muscles internal pudendal vessels and branches dorsal nerves of the penis bulbourethral glands penile arteries ```
82
what does the deep perineal pouch contain in females?
``` urethra sphincter urethrae deep transverse perineal muscles internal pudendal vessels and branches vagina dorsal nerves of the clitoris ```
83
what gives nervous supply to the deep perineal pouch?
perineal nerve (terminal branch of the pudendal nerve)
84
where is the superficial perineal pouch?
between the perineal membrane (the superficial fascia of the urogenital diaphragm) and the skin
85
what muscles are found in the superficial perineal pouch?
ischiocavernosus bulbospongiousus superficial transverse perineal
86
what are the contents of the superficial perineal pouch?
urethra, vagina, clitoris, penis, nerves and vessels and erectile tissue (cruara and bulb of vestibule (females), bulb of penis (male))
87
what attaches to the perineal body?
external anal sphincter, bulbospongiosus and superficial transverse perineal muscles
88
what is the perineal body?
a small fibrous structure forming a site of muscle attachment at the posterior margin of the urogenital diaphragm
89
what are the four parts of the male urethra?
pre-prostatic, prostatic, membranosus and penile (spongy)
90
what nerves supply the penis and scrotum?
branches of the pudendal: inferior rectal perineal (deep, superficial and scrotal branches) dorsal nerve of the penis
91
where are the crura, bulb of vestibule and the glands of the female reproductive tract located?
within the superficial peroneal pouch
92
what nerves supply the clitoris and external genitalia?
dorsal nerve of the clitoris (branch of pudendal) perineal nerve
93
what vessels supply and drain the clitoris?
internal pudendal vessels
94
what are the contents of the urogenital triangle in females?
in females contains the vagina and associated external genitalia
95
where is the anal triangle found?
posterior half of the perineum

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