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Human Anatomy: Pelvis/Perineum and Lower Limb > Pelvis > Flashcards

Pelvis Flashcards

1
Q

Lumbosacral trunk

A

Ant rami of…
L4-L5
S1-S4

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2
Q

Pelvic inlet

A

area around ilium, ischium, pubis, sacrum

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3
Q

Pelvic outlet

A

area b/w ischium and coccyx

closed by muscle, skin, connective tissue

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4
Q

Inominate bone

A

hip bone

bone that is fusion of ilium, ischium, and pubis

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5
Q

Acetabulum

A

depression where femur fits

site of fusion of 3 bones into inominate bone

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6
Q

Obturator foramen

A

b/w ischium and pubis

covered by membrane, obturator int and ext

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7
Q

Joints of pelvis

A

Lumbosacral (last lumbar vert and sacrum)
Sacroiliac (sacrum and ilium)
Sacrococcygeal (sacrum and coccyx)
Pubic symphysis (fibrous cartilage b/w pubic bones)

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8
Q

Ligaments of pelvis

A

Obturator membrane (closes obturator foramen)
Ant and post sacroiliac ligaments
Sacrotuberous (sacrum –> ischial tuberosity)
Sacrospinous (sacrum –> ischial spine)
Sup and inf pubic ligaments of pubic symphysis

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9
Q

Greater and lesser sciatic foramina

A

Foramina divided by sacrotuberous and sacrospinous ligaments

Conduits for things to run out of pelvis

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10
Q

Tendon of piriformis runs out of which foramen?

A

Greater sciatic foramen

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11
Q

Ischial tuberosity

A

sit bone

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12
Q

Perineum

A

area b/w pelvic cavity and external surface

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13
Q

Pelvic diaphragm

A

Levator ani

Coccygeus

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14
Q

Muscles of levator ani

A 
puborectalis
pubococcygeus
iliococcygeus
puboprostaticus
pubovaginalis
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15
Q

Branches of ant division of internal iliac a

A 
Obturator
Umbilical (sup and inf vesical)
Uterine
Middle rectal
Internal pudendal
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16
Q

Branches of post division of internal iliac a

A

Iliolumbar
Lateral sacral
Gluteal (sup and inf)

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17
Q

Branches of abdominal aorta to pelvis

A

Testicular
Ovarian
Median sacral

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18
Q

Obturator n origin

A

L2-L4

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19
Q

Lumbosacral trunk origin

A

L4-L5

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20
Q

Sciatic n origin

A

L4-S3

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21
Q

Coccygeal plexus origin

A

S4-S5

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22
Q

Pelvic splanchnic n origin

A

S2-S4

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23
Q

What nerves exit greater sciatic foramen, INF to piriformis?

A 
Sciatic
Post cutaneous to thigh
Inf gluteal
N to quaddratus femoris
N to obturator internus
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24
Q

What nerves exit greater sciatic foramen, SUP to piriformis?

A

Sup gluteal

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25
Q

What is the path of the pudendal n?

A

Exits greater sciatic foramen inf to piriformis, then enters lesser sciatic foramen

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26
Q

Greater pelvis

A

Sup to pelvic inlet

Occupied by abdominal viscera

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27
Q

Lesser pelvis

A

B/w pelvic inlet and pelvic outlet

Includes pelvic cavity and perineum

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28
Q

What muscle makes a sling around the rectum?

A

Puborectalis

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29
Q

Tendinous arch of levator ani is fascia from what muscle?

A

obturator internus

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30
Q

Oturator internus and piriformis both attach to what landmark?

A

Trochanter of femur

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31
Q

Actions of Obturator internus

A

rotates thigh laterally

32
Q

Actions of piriformis

A

rotates thigh laterally

abducts thigh

33
Q

Oturator internus and piriformis both attach to what landmark?

A

Greater trochanter of femur

34
Q

Exit of piriformis vs obturator internus

A

Piriformis exits greater sciatic foramen
Obturator internus exits lesser sciatif foramen
(both attach to greater trochanter of femur)

35
Q

Lumbosacral trunk origin

Joins with…

A

Origin: L4-L5

Joins with: S1-S4

36
Q

Gluteus medius and minimis allow for what action

A

Allow you to stand on one leg

Keeps pelvis level

37
Q

What nerve runs b/w sup and inf gluteal nerves?

A

Nerve to piriformis

38
Q

Pudendal nerve runs in groove of what fascia?

A

Obturator internus fascia

39
Q

Pudendal nerve supplies

A

perineum

40
Q

Umbilical a becomes…

A

medial umbilical ligament

41
Q

Uterine a anastamoses with what other aas?

A

Uterine anastamoses with vaginal and ovarian

42
Q

Ureters cross in front of what structures as travel to bladder?

A

Cross in front of common iliac vessels

43
Q

Kidneys and ureters in front of/behind peritoneum

A

Behind peritoneum

44
Q

Ureter enters back of bladder via what orifice?

A

Uretic orifice

45
Q

Trigone

A

triangular depression on back wall of bladder

  • -Top corners: entrance of ureters
  • -Bottom: entrance to urethra
46
Q

Apex of bladder

A

point at front of bladder

47
Q

Trigone and ureters (urogenital sys) is derived from what germ layer?

A

Intermediate mesoderm

48
Q

Bladder is derived from what germ layer?

A

Endoderm

–Bladder is outgrowth of gut

49
Q

What ligament attaches the bladder to the ant body wall?

A

Median umbilical ligament

–remnant of allantois/urachus

50
Q

Parts of male urethra

A

Prostatic
Membranous/intermediate (passes through perineal membrane)
Penile/spongy

51
Q

Blood supply to ureters

A 
Renal
Gonadal
Abdominal aorta
Common iliac
Internal iliac
Sup vesical
Middle rectal
Uterine
Vaginal
Inf vesical (male)
52
Q

Innervation of bladder

A 
Autonomic motor
--from inf hypogastric plexus
--parasym motor to detruser muscle
Somatic sensory
--stretch stimulated receptors
53
Q

Control of…
Int urethral sphincter
Ext urethral sphincter

A

Int: autonomic (reflex)
Ext: voluntary

54
Q

Urethra crest

A

raised structure that runs the length of the prostate (fold on post wall of urethra)

55
Q

Structures of the urethral crest

A 
Ejaculatory ducts (2) from seminal vesicles
Prostatic utricle (homologous with parts of uterus and vagina)
56
Q

Prostatic ducts

A

secretions of prostate exit prostatic ducts into prostatic sinuses to enter urethra

57
Q

Prostatic sinuses

A

fossa on either side of urethral crest

58
Q

Sperm exit…

Prostate secretions exit…

A

Sperm: ejaculatory ducts
Prostate: prostatic ducts

59
Q

Ejaculatory duct is combo of

A

Seminal gland and vas deferens in prostate

60
Q

Vas deferens and seminal vesicles on front or back surface of bladder?

A

Back

61
Q

Control of…
Int urethral sphincter
Ext urethral sphincter

A

Int: sym – autonomic (reflex)
Ext: somatic motor – voluntary

62
Q

Blood supply of prostate

A 
Sup vesical (from umbilical a)
Inf vesical
--to seminal gland
--prostatic branches
--urethral branches
63
Q

Prostatic venous plexus drains to…

A

Sup and inf vesical vv –> to int iliac v

64
Q

Layers of uterus

A

Perimetrium (outer)
Myometrium (muscular)
Endometrium (implantation occurs here)

65
Q

Uterine tube

A

directly connected to uterus

–uterus produced by fusion of R and L tubes

66
Q

Tubes start as … ducts

A

mullerian

67
Q

Broad ligament of uterus

A

double-layered peritoneum (mesentery) that is draped over the uterus

68
Q

Parts of broad ligament of the uterus

A

Mesometrium: b/w ovary and uterus
Mesovarium: area around ovary
Mesosalpinx: area b/w ovary and fallopian tube

69
Q

Vagina held in place by…

A 
Ext urethral sphincter
Bulbospongiosus
Pubovaginalis
Urethrovaginal spincter
Rectovesicalis
70
Q

Ovaries connected to body of uterus via

A

ligament of ovary

71
Q

Innervation of female internal reproductive organs

A

parasym from pelvic splanchnic
Sym from nerves travelling with blood vessels
Somatic: pudendal nerve

72
Q

Blood supply of rectum

A

Sup rectal a (from inf mesenteric)
Mid rectal a (from int iliac)
Sup rectal v (from inf mesenteric)
Mid rectal v (from int iliac)

73
Q

Ischioanal fossa

A

Triangular space b/w rectum, anus, and levator ani

Filled with fat

74
Q

Pudendal canal formed by…

A

obturator internus fascia

75
Q

Pudendal canal contains

A 
Pudendal nerve (from sacral plexus)
Int pudendal a, v
76
Q

Sup vesical a goes to…

Inf vesical…

A

Sup: bladder
Inf: bladder, males only, prostatic branches, seminal gland, urethra, ductus deferens

Human Anatomy: Pelvis/Perineum and Lower Limb (4 decks)

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