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S&F IV: Exam Two- European Gigalo > Structure of the Pelvic Wall > Flashcards

Structure of the Pelvic Wall Flashcards

1
Q

Sacral promontory

A

Anterior-superior margin of S1

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2
Q

Sacral hiatus

A

Inferior site of entry to the sacral canal allowing access for an epidural to the cauda equina

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3
Q

Pubic Arch

A

Is wider in females; formed by the inferior rami of the pubic bones

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4
Q

Pelvic Rim Structures

A

Pubic Crest => Pecten pubis => Arcuate line of the ilium => Lateral mass of the sacrum

Pecten pubis + Arcuate line= illiopectineal line

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5
Q

Pelvic Fracture

A

Must assume damage to bladder and urethra; lots of hemorrhage

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6
Q

Sacroiliac joint

A

Composed of anterior sacroiliac ligament, interosseus ligaments, and posterior sacroiliac
ligament

*Transmits the weight of the trunk to the pelvis

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7
Q

Sacrotuberal ligament

A

Attaches sacrum to ischial tuberosity; forms inferior boundary of the lesser sciatic foramen

*Lies posterior to the sacrospinous ligament

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8
Q

Sacrospinous ligament

A

Connects the sacrum and the ischial spine; forms the superior boundary of the lesser sciatic foramen

*Lies anterior to the sacrotuberous ligament

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9
Q

FNXN of sacrotuberous/spinous ligaments

A

Resist rotational forces of the trunk on the pelvis

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10
Q

Pelvic Inlet

A

Formed by the pelvic brim borders; entry into the pelvic cavity

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11
Q

Pelvic Outlet

A

Pubic symphysis => Inferior ramus of pubis => Ischial tuberosity => sacrotuberous ligament => coccyx

*Inferior opening of the pelvic cavity

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12
Q

Diagonal conjugate diameter

A

Measures angle b/w pubic symphysis & sacral promontory

*OBGYN measures w/ hand and determines other diameters w/ this; measures maximum diameter of pelvic outlet

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13
Q

Transverse diameter of the pelvis

A

Diameter b/w two ischial tuberosities

*Measurement of maximal width of pelvic inlet

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14
Q

Fetus during partuition

A

Must move head 90 degrees b/w pelvic outlet and inlet

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15
Q

Sex differences of pelvic cavity

A

Main thing to remember is male has pointed cavity; females have round ones for childbirth

*Male pelvic inlet = kidney-shaped

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16
Q

Tendon of obturator internus

A

Must pass thru lesser sciatic foramen to attach to greater trochanter of femur

*Fascia consists of endopelvic fascia that is continuous w/ the endoabdominal fascia

17
Q

Anterior Wall of Pelvis

A

Formed by pubic symphysis and bone

18
Q

Posterior Wall of Pelvis

A

Formed by piriformis

*Tendon courses thru greater sciatic foramen and attaches to greater trochanter of femur

19
Q

Perineum

A

Region below the pelvic diaphragm; contains external genitalia and outlet of gut

20
Q

Levator Ani

A

Forms anterior 2/3 of pelvic diaphragm; attaches to coccyx, annococcygeal body, and perineal body

21
Q

Perineal body

A

Tendinous raphe of pelvic muscles; important in supporting structures of abdomen

*If torn as a child => prolapse of pelvic viscera

22
Q

Levator prostate/ sphincter vaginae

A

Forms a sling around perineal organs and inserts onto perineal body

23
Q

Puborectalis

A

Forms an important sling around the anorectal jnxn pulling the posterior wall anteriorly

-Located adjacent to deep part of the external anal sphincter

24
Q

Pubococcygeus

A

Inserts onto anococcygeal body and coccyx

25
Q

Illiococcygeus

A

Extends from ischial spine and Tendinous arch to insert on anococcygeal body and coccyx

26
Q

Coccygus

A

Forms posterior 1/4 of pelvic diaphragm; goes from ischial spine to coccyx

27
Q

Sciatica

A

Pain to lower limb due to compression of the lumbosacral plexus by a tumor or possibly a child’s head

28
Q

Sciatic Nerve

A

Composed of L4-S3; exits inferior to piriformis

29
Q

Pudendal Nerve

A

S2-S4; travels out of the pelvic cavity thru the greater sciatic foramen and back in thru the lesser sciatic foramen

*Provides somatic motor innervation to perineal muscles

(Bulbospongiosus, ischiocavernosus, sphincter urethrae)

*Somatosensory to lower anal canal and superficial skin of penis

30
Q

Lateral Mass

A

Fusion of the sacral processes that connects the sacrum to ilium

31
Q

Iliolumbar ligament

A

Travels from the transverse processes of T5 to the iliac crest

32
Q

Maximum measurement of the pelvic outlet

A

Anterio-posterior diameter

*Can be determined by finding the diagonal conjugate diameter

33
Q

Pelvic diaphragm innervation

A

Ventral rami of S4 and S5

34
Q

Endopelvic fascia

A

Covers the pelvic organs and is continuous w/ the endoabdominal fascia

35
Q

Nerve to Obturator internus

A

Also passes thru the greater sciatic foramen and back thru the lesser

36
Q

Pelvic splanchnic nerves

A

Consist of pre-ganglionic parasympathetic fibers that innervate the Hindgut derivatives

37
Q

Lumbosacral trunk

A

Consists of the ventral rami of L4-L5; part of lumbosacral plexus

38
Q

Lumbosacral plexus

A

Consists of Lumbosacral trunk and S1-S3

-S1-S3 leave the sacrum via the anterior sacral foramina

S&F IV: Exam Two- European Gigalo (14 decks)

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