Pelvic (Intro, Female Pelvis Review, Uterus & Ovaries) Flashcards

1
Q

Where is the uterus?

A
  • retroperitoneal

- pelvic cavity

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2
Q

Distal End of Cervix

A
  • 2 lateral fornix
  • anterior fornix
  • posterior fornix
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3
Q

3 Layers of Uterus

A
  • perimetrium
  • myometrium
  • endometrium
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4
Q

3 Layers of Myometrium

A
  • subendometrial halo (inner layer)
  • intermediate
  • outer
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5
Q

Layers of Endometrium

A
  • superficial functional (sloughs off each menses)

- deep basal layer (stay attached to uterus)

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6
Q

How long are the fallopian tubes?

A

-7 to 12 cm

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7
Q

What are the 4 portions of fallopian tubes from proximal to distal?

A
  • intramural
  • isthmus
  • ampulla
  • infundibulum
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8
Q

Parts of an Ovary

A
  • germinal epithelium (single layer)
  • tunica albuginea (fibrous capsule)
  • cortex (follicles develop and mature)
  • medulla (smaller volume than cortex, composed of fibrous tissue and blood vessels)
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9
Q

If a uterus is tilting to the left, the left ovary may be ______ to the fundus.

A

-superior

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10
Q

Where else may ovaries be in relation to the uterus?

A
  • lateral
  • more adjacent to the cervix
  • pushed up to the iliacs
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11
Q

Infantile Uterus

A
  • 2.8cm
  • cervix is 2/3 total length
  • tubular or inverse pear shape
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12
Q

Neonate Uterus

A
  • slightly larger than infantile due to maternal hormone stimulation
  • 3.4cm
  • inverse pear shape
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13
Q

What happens to the size of the uterus from age 8 to puberty?

A

-gradually increases

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14
Q

Uterus @ Puberty

A
  • keeps increasing in size (especially body)
  • diameter and length of body double the cervical size
  • becomes adult size and shape
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15
Q

What is the size of an adult uterus? (max. dimensions before pregnancies)

A

7 to 8cm (long) x 5cm (wide) x 4cm (AP)

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16
Q

What does parity (pregnancy) do to the uterus?

A

-increases normal size by 1cm in each dimension

17
Q

What is the shape of the adult uterus?

A

-pear

18
Q

Menopausal Uterus

A
  • atrophies 3.5 to 6.5 cm (L) x 1.2 to 1.8cm (AP)
  • pear shape
  • small
19
Q

Sono Appearance of Myometrium

A
  • 7 to 8cm (long) x 5cm (wide) x 4cm (AP)
  • pear shaped
  • smooth
  • low to medium echogenicity
  • homogenous
20
Q

What may be found in the arcuate arteries of a post menopausal uterus?

A
  • calcifications (linear hyperechoic calcific foci)
  • sm echogenic foci within inner myometrium (single or multiple, non shadowing)

**these are all incidental findings and have no clinical significance

21
Q

What is the average volume of ovaries in a reproductive age woman?

A

6 cc

22
Q

Sono Appearance of Ovaries

A
  • oval
  • anechoic follicles
  • depends of stage of persons cycle
23
Q

What does the rectum measure from the internal canal?

A

-17 to 20 cm (7 to 8 in)

24
Q

Can you visualize the rectum on transabd and transvag?

A

yes.

25
Q

Sigmoid on US

A
  • S shape
  • gut signature
  • begins at fundus of uterus
26
Q

Posterior Pelvic Muscle

A

-iliopsoas

27
Q

Inferior Pelvic Floor

A

-levator ani (hammock): pubococcygeous and iliococcygeous

28
Q

Posterior Pelvic Floor

A

-coccygeous

29
Q

Inferolateral Pelvic Floor

A
  • obturator internus (lateral)

- piriformis (posterior)

30
Q

What pelvic floor muscle is often confused with an ovary on US?

A

-piriformis

31
Q

Muscle Appearance on US

A

-moderate echogenicity with echogenic striations within

32
Q

What can muscle be mistaken for on US?

A
  • ovaries

- masses

33
Q

How many planes do we image muscle in?

A

2

34
Q

Perineum

A
  • skin covered muscular region between vaginal orifice and anus
  • diamond shapes
  • from pubic symphysis (ant.) to coccyx (post.)
  • laterally to the ischial tuberosities (line drawn between divides anterior UG triangle and posterior anal triangle)
  • used in translabial scanning