Flashcards in Pelvis Deck (89)
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1
How is bony pelvis divided and what are regions
Superior peliv aperture (pelvic inlet)
False (greater) pelivs above
True (lesser) pelvis between inlet and outlet
2
Bony boundary of pelvic inlet
Pevlic brim
3
Position for pelvis exam
Lithotomy position
4
Pelvic outlet is also called
Inferior pelvic aperture
5
Midpelvic (tranverse) diameter
Line between ischial spaces
Smallest line that baby must pass through
6
Obstetric (true) conjugate
Line from the sacral promentory to the pubic symphysis
Shorter than diagonal
7
Diagonal conjugate and how to measure
Palpate sacral promontory...line extends to the inferior aspect of pubic symphysis...line will be longer than true conjugate
8
Sacrotuberous ligament attachments
Extends from sacrum to medial margin of ischial tuberosity
9
Sacrospinous attachments
From medial margin of lower sacrum to ischial spine
10
Obturator membrane closes off
Allows passage of
Most of obturator foramen
Obturator artery, vein, and nerve
11
Innfer surface of pelvis, hip bone, and sacrum, largerly covered by
Piriformis
Obturator internus
12
Pelvic diagphragm
Sling-like muscular structure covering pelvic floor
13
Posterior part of pelvic diaphragm and relative location to sacrospinous
Coccygeus
Deep
14
Anterior part of pelvic floor
Levator ani muscles
15
What do levator ani muscles arise from
Tendinous arch
16
What is tendinous arch
Thickening of fascia covering obturator internus muscle
Gives rise to levator ani muscles
17
Puborectalis muscle and what it is important for
Fibers of levator ani that loop around rectum
Maintaining fecal continenence
18
Levator ani muscle innervation
Sacral plexus
19
Perineum
Region below pelvic diaphragm
20
Deep pouch of the perineum composition and function
Composed of muscle, connective tissue, and neurovascular structures
Supports urogenital organs
21
Where does deep pouch not extend
Posteriorly past the ischial tuberosities to support the rectum
22
Perineal body
Midline know of fibrous connective tissue connecting pelvic floor and deep pouch of perineum
23
Damage to peliv floor, perineal body, or deep pouch can lead to
Incontinence, prolapse of the bladder or prolapse of the uterus through the vagina
24
3 systems of pelvic anterior to posterior
Urinary, reproductive, digestive
25
Rectum is continuation of what and begins where?
Sigmoid colon
Pelvic brim
26
Lumen of rectum exhibits what?
3 permanent transverse folds
27
Smooth muscle over rectum formed from
Taeniae coli of the colon
28
When is rectum renamed anal canal?
Region of perineum
29
Arterialy supply of rectum and origins
Superior rectal (from inferior mesenteric)
Middle rectal (from internal iliac)
Inferior rectal (from internal pudendal from internal iliac)
30
