Pelvis Flashcards

1
Q

What are the male and female pelvic differences?

A

male has narrower angle between inferior pubic rami

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2
Q

What makes the dimples in the back?

A

posterior superior iliac spine

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3
Q

What bone do you sit on?

A

ischial tuberosity

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4
Q

What attaches to the pubic tubercle?

A

inguinal ligament

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5
Q

What is the false pelvis?

A

Pelvis major

lowermost part of the abdominal cavity between the iliac fossa

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6
Q

What is the true pelvis?

A

Pelvis minor

inferior to superior pelvic aperture

contains pelvic viscera

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7
Q

Why is the distance between female ischial spines useful?

A

can determine if need c section

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8
Q

What are the contents of the pelvis?

A

1 rectum
2 bladder
3 uterus/vagina or protatate glands

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9
Q

Where isthe sacrotuberous ligament?

A

from lateral sacrum and coccyx to medial side of ischial tuberosity

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10
Q

Where is the sacrospinous ligament?

A

from lateral sacrum and coccyx to ischial spine

splits and makes 2 foramen

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11
Q

How does the obturator internus run?

A

makes 90 degree turn out lesser sciatic foramen

under ischial spine

to greater trochanter

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12
Q

Obturator internus

A

Origin inner surface of obturator membrane and rim of pubis and ischium bordering membrane

Insertion middle part of medial aspect of greater trochanter of femur

action laterally rotates and stabilizes hip

nerve nerve to obturator internus L5, S1, 2

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13
Q

Pirifomis

A

Origin 2,3,4 costrotransverse bars of anterior sacrum, few fibers from superior border of greater sciatic notch

Insertion anterior part of medial aspect of greater trochanter of femur

action laterally rotates and stabilzies hip

nerve anterior primary rami of S1,2

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14
Q

What forms the floor of the pelvic cavity?

A

pelvic diaphragm (levator ani + coccygeous

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15
Q

What covers the sacrospinal ligament?

A

coccygeous- from ischial spine and sacrospinous lig to coccyx

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16
Q

What are the levator ani muscles?

A

iliococcygeous
pubococcygeous
puboretalias

supplied by branches of sacral pleus S3-S5
prudential nerve helps a little

inserts on fascia of operatur inturnus on ARCUS tendonaeus (where pelvic diaphragm meets OI)

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17
Q

What are the 2 types of pelvic fascia?

A

continous with transveralis fascia

1 parietal = lines the walls of the pelvic cavity
2 visceral = loose connective tissue surrounding the viscera (continous with pareital)

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18
Q

Coccygeous muscle

A

Origin ischial spine

Insertion lower end of sacrum and coccyx

action assist the levator ani in supporting the pelvic viscera

nerve branches of 4th and 5th sacral nerves

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19
Q

What keeps your guts from falling out?

A

levator ani and coccygeous = pelvic diaphragm

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20
Q

Where does the opturator artery run?

A

branch of anterior division of internal iliac

through obturator foramen to medial thigh

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21
Q

What does the external iliac become?

A

femoral artery

after passing under inguinal ligament

22
Q

What replaces the female inferior vesicle artery?

A

uterine artery

23
Q

What are three most important pelvic nerves?

A
sciatic = L4-S3
pudental = S2,3,4 (S234 keeps junk off floor)
Femoral = L2,3,4
24
Q

What are the most important lumbosacral plexus nerves?

A

1 subcostal
2 iliohypogastric = belly button
3= ilioinguinal = superificial ring
4 = genitofemoral = skin on thigh cord and cremaster
5 obturator = horse riding muscles
6 = femoral = quads
7 peroneal portion of sciatic = wraps around knee
8 tibial portion of sciatic = back of lower extremities
9 nerve to obturator internusus
10 pudental

25
Q

What kind of nerves are lumbar and saccral planchnics?

A

sympathetics

26
Q

What kind of nerves are pelvic splanichnics?

A

parasympathetics

27
Q

How do autnomics affect peen function?

A
parasympathetics = point (erection) + go
sympathetics = shoot (ejaculartion) + stop going
28
Q

Where do the splanichnics mingle?

A

all 3 splanchnic types mingle with all or some of the SHP), IHP, and pelvic nerves

29
Q

What causes hemoroids?

A

blood backing up from an occluded portal system (bad liver) can cause hemorrhoids where 2 systems meet

30
Q

What kind of control is internal anal sphincter under?

A

involuntary control

other 3 sphincters are voluntary control

31
Q

Where can you feel pain?

A

below pectinate line only
not above

important for hemmroid location

32
Q

Where does the superior rectal vein drain?

A

to portal system

33
Q

What activates the detrusor muslce?

A

parasympathetic nervous system

34
Q

What is the origin of the trigone in the bladder?

A

mesodermal in origcan

everything else is endodermal

35
Q

What relaxes the internal urethral sphincter and external urethral sphincter?

A

parasymp

36
Q

How does the prostate keep sperm viable>

A

provdies alkaline secretions to ejaculate which neutralize the acidic environment of the vagina

37
Q

where does the uterine tube lie?

A

upper border of the broad ligament

38
Q

Where is the utreter in relation to the uterine artery?

A

water under the bridge

ureter is under the uterine artery

39
Q

What is anteversion and anteflexion of the uterus?

A

anteversion = axis of uterus is at 90 degree with that of vagina

anteflexion = axis of body of uterus is bent forward with that of the cervcix forming an angle of about 170 degree body (body of uterus is bent slightyl forward at isthmus)

40
Q

What is the pouch of douglas?

A

clinically important for tumors or blood collection

between rectum and uterus
uterus pulled to bladder

41
Q

What is the pectinate line?

A

separation of visceral and parietal

42
Q

Where does the femur fit?

A

acetebulum

43
Q

What meets at the trochanter?

A

piriformis = greater sciatic foramen

internal opturator = lesser sciatic foramen

44
Q

Where does sciatic nerve run?

A

goes out greater sciatic formen

below piriformis
above sacrospinus ligament
travels with femoral nerve to lower extremity

45
Q

Where does pudendal nerve go?

A

1 come out greater sciatic foramen
2 cross over sacrospinus ligament
3 back in lesser sciatic foramen
4 settles between opturator internus and pelvic diaphragm
5 fascia makes up pudendal canal = alcocks canal

with pudendal artery

46
Q

What is the first branch off of the internal iliac artery?

A

iliolumbar (goes up)

47
Q

Where does lateral sacral artery go?

A

goes medial to get to lateral sacral

48
Q

What is archus tendinaes?

A

intersection of opturator internus and pelvic diaphgram

49
Q

What artery feeds testicle and ovary?

A

testicular artery and ovarian artery

off of aorta not off of iliac

50
Q

Pubic Symphysis

A

Joins the two pubic bones

51
Q

Where is iliolumbar ligament?

A

L5 transverse process to iliac crest