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Sagittal Plexus/Pelvis Flashcards

1
Q

3 Bones of Coxal Bones

A

Ilium (sup)
Ischium (inf)
Pubis (ant)

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2
Q

Acetabulum

A

Concave site where 3 coxal bones meet and head of femur sits

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3
Q

4 Parts of Bony Pelvis

A

L and R Coxal Bones, Sacrum, Coccyx

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4
Q

Sacrotuberous Ligament

A

Travels from sacrum to ischial tuberosity

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5
Q

Ischial Tuberosity

A

Big rounded edge at inferior/anterior surface of ischium

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6
Q

Sacrospinous Ligament

A

Travels from sacrum to ischial spine

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7
Q

Ischial Spine

A

Bump separating greater and lesser sciatic notch

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8
Q

Path of Perineal-Directed Structures

A

Come out of sacrum through greater sciatic foramen, but then loop around and go through lesser sciatic foramen

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9
Q

Obturator foramen

A

Opening between ischium and pubis, mainly filled w/ ligament so actual foramen is quite small

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10
Q

Arcuate Line of Ilium

A

Smooth rounded border on internal surface of ilium

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11
Q

Posterior Superior Iliac Spine

A

Sticks out above sacrum

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12
Q

Posterior Inferior Iliac Spine

A

Sticks down into greater sciatic notch

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13
Q

Anterior Vertical Plane of Pelvis

A

Anterior superior iliac spines and pubic tubercles

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14
Q

Transverse Plane of Pelvis

A

Superior border of pubic symphysis and ischial spines

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15
Q

6 Sex Differences Between Males/Females

A
  1. Flare of the ilia - F: out laterally, M: upright
  2. Shape of pelvic inlet (sup. aperture) - F: rounder, M: oval or heart-shaped
  3. Pelvic outlet (inf. aperture) - F: coccyx bent back to make it larger, M: coccyx bent inwards so its smaller
  4. Pelvic arch - F: wider and broader, M: V-shaped
  5. Obturator foramen - F; oval and narrower, M: rounder
  6. Shape of sacrum
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16
Q

Floor of pelvis

A

Pelvic diaphragm

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17
Q

Tendinous arch

A

Kind of wide U that makes up lat. and ant. borders of pelvic diaphragm

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18
Q

Obturator internus

A

Makes up lateral wall of pelvic bowl, then bends 90 deg around ischial spine and heads down to femur

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19
Q

Piriformis muscle

A

Runs along sup. post. wall of pelvic bowl

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20
Q

Urogenital Hiatus

A

Hole in ant/inf pelvic musculature for urethra to pass through

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21
Q

Anococcygeal Raphe

A

Line where 2 halves of pelvic diapharagm join together

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22
Q

2 Parts of Pelvic Diaphragm

A

Levator ani m. and coccygeus m.

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23
Q

3 Muscles of Levator Ani (Med-Lat)

A

Puborectalis, pubococcygeus, and iliococcygeus

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24
Q

Coccygeus Muscle

A

Runs b/w levator ani muscles and piriformis

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25
Rectal Peritoneal Relationships (2)
Retroperitoneal - Upper 2/3 | Infraperitoneal - Lower 1/3
26
Folds of Houston
Transverse rectal folds
27
Skeletal Muscle of Anus
Levator ani
28
Pectinate Line
Where anal columns meet anal sinuses
29
White Line of Hilton
Line in anus where it changes from rectal epithelium to skin epithelium
30
Anal Columns Function
Allow for tighter closure of anus
31
3 Blood Supplies to Rectum
Superior rectal a. off inf. mesenteric a. Middle rectal a. off internal iliac a. Inferior rectal a. off internal pudendal a.
32
Anastomosis to bypass common iliac a.
Superior rectal and middle rectal a.s, combining inf. mesenteric a. and internal iliac a.
33
Innervation of rectum
through inferior hypogastric and rectal plexuses: Postgang symps coming from lumbars, parasymps coming from sacral
34
4 External Features of Bladder
Base (fundus) - superior Apex - by neck Body Neck - where urethra coming out
35
Vesical Trigone
Triangle in bladder made by the two ureteric ostia and internal urethral orifice
36
Blood Supply of Bladder (2)
Superior and inferior vesical arteries off internal iliac a.
37
Innervation of Bladder
Inferior hypogastric plexus, both symp and parasymp
38
Path of Ductus Deferens (2)
Anterolateral from testes, curve around posteromedial behind bladder to join w/ seminal vesicles on prostate Retroperitoneal
39
Ampulla of Ductus Deferense
Enlarged part of ductus deferens that meets seminal vesicles
40
Blood Supply of Ductus Deferens
Deferential artery from internal iliac
41
Innervation of ductus deferens
Sympathetic from sup. hypogastric plexus
42
Seminal Vesicles
Blind-ended glands on post/inf side of bladder that run into prostate and produce seminal fluid
43
Seminal Vesicles/Prostate Blood Supply
Inferior vesical a. off internal iliac
44
Seminal Vesicles/Prostate Innervation
Symp from sup. hypogastric plexus
45
Uvula
Raised part in urethra running from vesical trigone
46
Prostatic Crest
Crest on uvula as it enters prostate
47
Colliculus Seminalis
Hill in urethra in middle of prostate containing prostatic utricle and ejaculatory ducts
48
Ejaculatory Ducts
Form from combination of ductus deferens and seminal vesicles, pass through prostate, and come out laterally onto colliculus seminalis
49
Prostatic Utricle (2)
Medial hole on colliculus seminalis, remnant of uterus
50
3 Parts of Male Urethra (proximal-distal)
Prostatic urethra, membranous urethra, spongy (penile) urethra
51
Ovarian Ligament
Runs from uterus to ovary
52
Mesovarium
Draping of peritoneum around ovarian ligament
53
Suspensory Ligament of Ovary
Comes in laterally and carries ovarian a. and v.
54
Fimbriae
Fingers that hang out over ovary from uterine tubes and pick up eggs
55
Mesosalpinx
Draping of peritoneum over uterine tube
56
4 Sections of Uterine Tube (ovary-uterus)
Infundibilum, ampulla, isthmus, intramural
57
3 Parts of Uterus
Fundus, body, cervix
58
3 Parts of Cervix
Internal os, cervical canal, external os
59
Cervix Function
Closes down w/ mucus plug when not ovulating to prevent infection and such
60
2 Bends of Uterus
Anteversion - where cervix meets vagina, 90 deg or less | Anteflexion - Where cervix meets body of uterus, 170 deg or less
61
2 Abnormal Positions for Uterus
Retroversion and retroflexion
62
3 Parts of Broad Ligament
Mesometrium, mesosalpinx, mesovarium
63
Round Ligament
Remnant of ductus deferens, runs from uterine horns through inguinal rings and down into labia majora
64
Cardinal Ligament
More lateral ligaments that support uterus around cervix
65
Uterosacral Ligament
More medial ligaments that support uterus around cervix
66
4 Fornices
2 Lateral, Anterior, Posterior
67
Posterior Fornix
Can sample peritoneal fluid by going through here
68
3 Kinds of Prolapse
Uterine, cystocele (bladder pushes into vagina), or rectocele (rectum pushes into the vagina)
69
Prolapse Cause
Muscles or ligaments in uterine/vaginal area fail
70
Prostatic hyperplasia
Prostate gets too enlarged, puts pressure on urethra as it travels through
71
Pouches (3)
Male: rectovesical pouch Female: vesicouterine and rectouterine pouch (one that you can sample via posterior fornix)
72
3 Branches off Post. Trunk of Internal Iliac
Iliolumbar a., lateral sacral a.s, and superior gluteal a.
73
Iliolumbar a.
Heads off post. trunk of internal iliac and goes up to supply ilium and lumbar regions
74
Lateral sacral a.s
Come off post. trunk of internal iliac and go towards sacrum
75
Superior gluteal a.
Main large branch of posterior trunk of internal iliac and goes through greater sciatic foramen to supply muscles of gluteal region
76
8 Arteries off Ant. Trunk of Internal Iliac
``` Umbilical artery (usually ligamentous, occasionally vesicular) Superior vesical a.s Obturator a. Inferior vesical a. (male) Uterine a. (female) Middle rectal a. Internal pudendal a. Inferior gluteal a. ```
77
Obturator a.
Comes off AntTrunk of Int Iliac and runs w/ obturator nerve through obturator foramen
78
Internal pudendal a.
Comes off anttrunk of int iliac and comes down, around ischialspinous ligament and comes back into perineum and supplies mostly all of perineal
79
Inferior gluteal a.
Comes off anttrunk of int iliac, goes through lesser sciatic foramen and supplies gluteal region
80
7 Nerves of Lumbar Plexus
Iliohypogastric, ilioinguinal, genitofemoral, lateral femoral cutaneous, femoral, obturator, and lumbosacral trunk
81
5 Nerves of Posterior Division of Sacral Plexus
Superior gluteal, inferior gluteal, common fibular (peroneal) nerve of sciatic nerve, lateral half of posterior femoral cutaneous nerve, branches to pirisformis muscle
82
5 Nerves of Anterior Division of Sacral Plexus
Tibial nerve of sciatic nerve, pudendal nerve, nerve to quadratus femoris (and inferior gemellus), nerve to obturator internus (and superior gemellus), medial half of posterior femoral cutaneous
83
Superior and Inferior Gluteal Nerves
Pass through greater and lesser sciatic foramen, respectively

Anatomy (28 decks)

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