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Flashcards in Pelvis and Pelvic Floor Deck (48):
1

There are two regions of the pelvis- what are they and what divides them?

False (greater) pelvis- above the pelvic brim and the true (lesser) pelvis- below the pelvic brim

2

In the false pelvis, the pelvic inlet is continuous with what?

The abdominal cavity

3

In the true pelvis, the pelvic inlet is what?

closed off below by the muscular pelvic floor

4

The pelvic cavity is lined by what?

peritoneum

5

Inferior to the pelvic inlet, what vertebrae are found?

1 sacrum (5 fused vertebrae) and 2 os coxae (ilium, ischium and pubis)

6

Know all of the bony landmarks of the pelvis and os coxae

ok

7

What is the reason for the sexual dimporhpism of the pelvis?

To accommodate for childbirth

8

What are the differences in the pelvis between men and women? (6)

1. Oval pelvic brim in women vs heart shaped pelvic brim in men
2. shorter pubic symphysis in women
3. much wider pubic arch in women
4. more flared iliac wings in women
5. ischial tuberosities are further apart in women
6. the sacrum is shorter and less curved in women

9

What does the pubic symphysis do?

it connects the two pubic bones

10

What does the obturator membrane do?

it closes off the obturator foramen (which is the lower border of obturator canal)

11

What is the lower border of the lesser sciatic foramen?

The sacrotuberous ligament

12

What is the lower border of the greater siatic foramen?

The sacrospinous ligmament

13

Go get a model of a pelvis and study it

you got it

14

The piriformis muscle acts on which joint and arises from where and passes through which foramen?

Arises from pelvis to act on hip joint. It passes through the greater sciatic foramen

15

The obturator internus muscle arises from where, acts on what, and passes through which foramen?

Arises in pelvis to act on hip joint. Passes through the lesser sciatic foramen

16

What is purpose of the pelvic floor?

It separates the pelvic cavity from the perineum

17

What is the largest component of the pelvic diaphragm?

Levator ani muscles

18

What are the three levator ani muscles?

Iliococcygeus
Pubococcygeus
Puborectalis

19

T/F the greater sciatic foramen is seen only below the piriformis muscle?

False- it's seen above and below the piriformis muscle

20

The sciatic nerve travels where?

inferior to the piriformis muscle and superior to the sacrospinous ligament

21

The perineum is made up of two triangles. What are the two triangles between the thigh?

Urogenital triangle and anal triangle

22

What passes through the urogenital triangle?

Urinary and genital systems
Deep transverse perineal muscles or UG diaphragm

23

What passes through the anal triangle?

The rectum and anus
Pelvic floor muscles or pelvic diaphragm

24

What is the role of the ureters?

Transports urine from kidneys to bladder

25

In males and females, what is the structure that crosses the ureters?

Male- ductus deferens
Female- uterine arteries

26

What does the urinary bladder do?

It stores urine prior to expulsion through the urethra

27

What is the smooth muscle of the urinary bladder?

detrusor urinae

28

The female urethra pierces where?

the anterior portion of the UG diaphragm between the bladder and external urethral orifice

29

Where is the rectum located?

In the true pelvis, superior to the pelvic floor

30

The rectum is normally constricted by what?

The puborectal sling

31

The puborectal sling is made of what?

the u-shaped puborectalis muscle

32

Where are ovaries housed?

They are encapsulated and housed in the true pelvis

33

What do ovaries produce?

the ova and female hormones (one ovum released per cycle)

34

What is the purpose of the uterine/fallopian tubes?

muscular tubes for transport of the ovum to the uterus

35

What are the three parts of the fallopian tubes?

isthmus, ampulla infindibulum, and fimbriae

36

The uterus can enlarge how many times during pregnancy?

20 times

37

T/F the uterus is usually anteverted and at a right angle to the vaginal canal?

True

38

Does the position of the uterus change depending on the bladder and pregnancy?

yep

39

The inferior neck of the uterus opens into where?

Opens to vagina as external os and uterus as internal os

40

What is the vaginal fornix?

Circular gutter surrounding the cervix

41

Uterine ligaments:

See slide 39- maybe draw or just practice identifying and know their purpose?

42

T/F the perineum is part of the pelvic diaphragm?

False. It is not

43

T/F the external sphincter muscles are continuous with deep transverse perineal muscles

truth

44

As the bladder fills, which way does it expand?

superiorly

45

Are fallopian tubes muscular or non-muscular tubes?

muscular

46

The suspensory uterine ligament does what?

It acts like the mesenteric ligaments from earlier lectures

47

Which uterine ligament anchors the ovary to the uterus?

The ovarian ligament

48

Which ligament is a continuation of the ovarian ligament?

The round ligament of uterus