Posterior Abdominal Wall and Pelvic Cavity Flashcards

1
Q

Nerve to Transversus Abdominis

A

Iliohypogastric

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2
Q

Nerve to Quadratus Lumborum

A

Ventral Rami of T12-L4

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3
Q

Nerve to Psoas Major

A

Lumbar Plexus L1-L3

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4
Q

Nerve to Iliacus

A

Femoral

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5
Q

Nerve that runs on ANT surface of QL

A

T12/Subcostal

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6
Q

Name the two nerves that arise from L1 Nerve

A

Iliohypogastric (larger) & Ilioinguinal

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7
Q

Nerve associated with Meralgia paresthetica?

A

Lateral Femoral Cutaneous Nerve (L2-L3)

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8
Q

Name the two nerves that arise from Genitofemoral Nerve?

A

Genital branch (passes through inguinal ring) & Femoral branch (passes under inguinal ring)

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9
Q

Destination of genital branch of genitofemoral nerve?

A

Males= cremaster m.
Females= skin of mons, labia majora

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10
Q

Name the two nerves arising from L2-L4

A

Obturator N. and Femoral N.

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11
Q

True pelvis is…

A

below the pelvic brim/inlet

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12
Q

True pelvis wall muscles

A

Obturator internus (covered by obturator fascia) & Piriformis

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13
Q

Obturator fascia creates what line

A

Arcus tendineus (gives rise to levator ani)

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14
Q

Other names for pelvic floor

A

Pelvic diaphragm and levator ani

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15
Q

Innervation of Levator ani

A

Pudendal Plexus (S3, sometimes S3&5)

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16
Q

Levator ani is subdivided into what muscles

A

Pubococcygeus, puborectalis, iliococcygeus, and pubovaginalis in females

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17
Q

Pelvic diaphragm components

A

Levator ani & coccygeus

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18
Q

Common iliac artery bifurcates into internal and external iliac arteries, Internal iliac artery bifurcates into anterior and posterior trunks. What are the branches off posterior iliac A.?

A

Iliolumbar (further divides to lumbar branches, psoas and QL branches and iliac branches), Lateral sacral (branches enter sacral foramina to vertebral canal), Superior gluteal (terminal branch leaving via greater sciatic foramen to piriformis, obturator internus and all gluteal muscles)

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19
Q

The anterior trunk of internal iliac artery branches into…

A

Obturator, umbilical (sup and middle vesical to bladder), uterine, vaginal, inferior vesical, middle rectal, internal pudendal and inferior gluteal arteries

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20
Q

What are the two terminating branches of the anterior trunk of internal iliac artery?

A

Internal pudendal and Inferior gluteal (larger of the two)

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21
Q

Venous return of internal iliac

A

iliolumbar veins participate in formation of ascending lumbar veins, to azygos (right) or hemiazygos (left), to IVC

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22
Q

Cruciate anastomosis of lower extremities include…

A

Inferior gluteal a., 1st perforating branch, lateral and medial femoral circumflex a.

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23
Q

Perineum boarders

A

pubis, coccyx, Sacrotuberous ligament, ischiopubic rami/tuberosities

24
Q

Anal triangle + Urogenital triangle =

A

Perineum

25
Q

Leaving through the greater sciatic foramen, across the ischial spine and through the lesser sciatic foramen is what?

A

Pudendal/ Alcocks’s canal

26
Q

Contents of pudendal canal?

A

Internal pudendal a. & v. & pudendal n.
(inferior rectal a. ,perineal a. & deep/dorsal a. to clitoris/penis)

27
Q

Internal pudendal a. branches to…

A

inferior rectal a. and perineal a.

28
Q

Perineal a. (branch from internal pudendal) branches into…

A

Transverse perineal a. and posterior scrotal/ labial

29
Q

Nevers of Anal triangle come from what 3 sources…

A

Pudendal never (S2-S4), Perineal branch of S4, and Perineal branches of posterior femoral cutaneous n.

30
Q

Urogenital triangle contains…

A

Superficial and deep perineal fascia, perineal membrane and the superficial and deep perineal pouches

31
Q

Muscles of the deep perineal pouch

A

external urethral sphincter, compressor urethrae and deep transverse perineal muscles

32
Q

Where are the Bulbourethral glands found and what do they secret?

A

Deep transverse perineal m. and secret precum

33
Q

Components of superficial perineal pouch

A

Erectile tissue. Crura, bulb, vestibular bulb, ischiocavernosus and bulbospongiosus. Also transverse perineal m.

34
Q

Roll of ischiocavernosus and bulbospongiosus

A

restrict blood return during erection

35
Q

Penile components in the superficial perineal pouch…

A

corpus spongiosum (bulb), corpora cavernosa (crura), suspensory ligament, and fundiform ligament, bulbospongiosus, ischiocavernosus

36
Q

Another name for fundiform ligament

A

Scarpa’s fascia

37
Q

What form the crura of the clitoris?

A

Corpora cavernosa

38
Q

Other name for “hood of clitoris”

A

prepuce

39
Q

Clitoral components in the superficial perineal pouch…

A

vestibular bulbs, corpora cavernosa, prepuce, suspensory ligament, bulbospongiosus, ischiocavernosus, superficial transverse perineal

40
Q

What separates the superficial and deep perineal pouches?

A

Perineal membrane

41
Q

Another name for the superficial layer of the superficial perineal fascia

A

Campers fascia

42
Q

Another name for the deep layer of the superficial perineal fascia

A

Colles fascia

43
Q

Another name for the deep perineal fascia

A

Bucks = deep fascia of clitoris/penis

44
Q

Nerves of urogenital triangle

A

Pudendal n. (perineal n. and dorsal nerve to clitoris/penis)

45
Q

Homologous structure to Labia majora

A

Scrotom

46
Q

Homologous structure to vestibular bulbs

A

corpora spongiosa

47
Q

Homologous structure to Dartos muscle of scrotum

A

subcutaneous smooth muscles of labia majora

48
Q

Homologous structure to labia minora

A

spongy urethra

49
Q

Homologous structure to Bartholin’s gland (greater vestibular)

A

Cowper’s gland (bulbourethral)

50
Q

Homologous structure to crus of penis

A

crura

51
Q

Homologous structure to clitoris

A

penis

52
Q

Homologous structure to clitoral hood

A

foreskin

53
Q

Homologous structure to clitoral glans

A

glans penis

54
Q

Homologous structure to prostate gland

A

Skene’s gland (urethral & paraurethral)

55
Q

Homologous structure to ovary

A

testis

56
Q

Where is the dartos, labia majora found

A

Superficial perineal fascia