Class 1 Flashcards

1
Q

Uterus: Definition and Regions

A
Pear shaped muscular organ
4 regions:
Fundus
Corpus
Isthmus
Cervix
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2
Q

Layers of the Uterus: What are the 3 tissue layers?

A
SEROSA (PERIMETRIUM)
-Outermost
MYOMETRIUM 
-Middle layer
ENDOMETRIUM
-Innermost: functional layer
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3
Q

Uterus Shape And Size: What are they and what are their variations?

A

VARIES WITH AGE AND OBSTETRIC HX
Prior to menarche - cylindrical and narrow

Mature uterus - corpus & fundus enlarge

After menopause - regresses in size

Nulliparous female:
SAG = less than or equal to 8 cm
TRV = up to 5 cm
AP = 3 cm

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4
Q

What are the 3 variants in uterine position?

A

Normal
Retroverted: laid back
Anteverted: shlumped forward
Retroflexed: folded backwards

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5
Q

ANTEFLEXED Uterine Position

A

Uterine fundus and corpus tilted forward

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6
Q

RETROFLEXED Uterine Position

A

Corpus and fundus tilted posteriorly

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7
Q

RETROFLEXED and RETROVERTED Uterine Position

A

Corpus, fundus and cervix are tilted posteriorly

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8
Q

UTERUS MYOMETRIUM: Ultrasound Appearance

A
  • Mid gray or medium level echoes
  • Even homogeneous texture and pattern
  • Smooth even contour
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9
Q

ENDOMETRIAL CAVITY: Ultrasound Appearance

A
  • Thin echogenic line

- Varies in thickness in relation to menstrual phase

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10
Q

Vagina: Ultrasound Appearance

A
  • Mid gray to medium level echoes

- Vaginal canal is hyperechoic line

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11
Q

Fallopian Tubes: What are the 4 Portions?

A
INTERSTITIAL (INTRAMURAL): Narrowest part, nearest cornu
ISTHMUS: Slightly wavy and longer
AMPULLA: Tortuous and longest part
INFUNDIBULUM: Lateral, trumpet shaped,
fimbriae
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12
Q

INTERSTITIAL (INTRAMURAL): Portion of the Fallopian Tubes

A

Narrowest part, nearest cornu

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13
Q

ISTHMUS: Portion of the Fallopian Tubes

A

Slightly wavy and longer

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14
Q

AMPULLA: Portion of the Fallopian Tubes

A

Tortuous and longest part

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15
Q

INFUNDIBULUM: Portion of the Fallopian Tubes

A

Lateral, trumpet shaped,

fimbriae

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16
Q

What are the 2 Adjacent Spaces?

A

ANTERIOR CUL DE SAC (VESICOUTERINE POUCH)
Reflection of peritoneum over anterior surface of uterus and bladder
POSTERIOR CUL DE SAC (RECTOUTERINE POUCH, POUCH OF DOUGLAS)
Reflection of peritoneum over posterior surface of uterus and rectum

17
Q

ANTERIOR CUL DE SAC: What is it?

A

VESICOUTERINE POUCH

Reflection of peritoneum over anterior surface of uterus and bladder

18
Q

POSTERIOR CUL DE SAC: What is it?

A

RECTOUTERINE POUCH, POUCH OF DOUGLAS

Reflection of peritoneum over posterior surface of uterus and rectum

19
Q

What are the Ligaments?

A

CARDINAL LIGAMENTS - anchor uterine corpus and cervix to lateral pelvic wall
UTEROSACRAL LIGAMENTS - anchor uterine cervix to sacrum
ROUND LIGAMENTS - anchor uterine fundus anteriorly
BROAD LIGAMENT - part of peritoneum that divides true pelvis into anterior & posterior portions

20
Q

CARDINAL LIGAMENTS

A

anchor uterine corpus and cervix to lateral pelvic wall

21
Q

UTEROSACRAL LIGAMENTS

A

anchor uterine cervix to sacrum

22
Q

ROUND LIGAMENTS

A

anchor uterine fundus anteriorly

23
Q

BROAD LIGAMENT

A

part of peritoneum that divides true pelvis into anterior and posterior portions

24
Q

What are the bones that make up the Pelvic Girdle?

A
  • FOUR BONES
  • SACRUM
  • COCCYX
  • 2 INNOMINATE BONES (ILIUM, ISCHIUM, & PUBIS)
25
Q

What are the Muscles of the Pelvis?

A

RECTUS ABDOMINUS - form anterior abdomino - pelvic wall
PSOAS and ILIACUS - large muscles laterally, located in false pelvis
ILEOPSOAS MUSCLE - seen laterally in TRV
OBTERATOR INTERNUS - laterally in true pelvis
PIRIFORMIS -posterior in true pelvis
MUSCLES OF PELVIC FLOOR - levator ani and coccygeus

26
Q

The Ovaries: Where are they located and how big are they?

A
LOCATION:
Lateral to the uterus in the adnexa
In posterior fold of broad ligament
May be superior or posterior to uterine fundus, 
May be in posterior cul de sac

SIZE:
SAG = 2.5-5.0 cm
TRV= 1.5-3.0 cm
AP = .6-2.2 cm

27
Q

What are the Ligaments of the Ovaries?

A

Mesovarian - anchors ovary to posterior surface of broad ligament
Ovarian ligament - anchors ovary to uterine cornu
Infundibulopelvic ligament - anchors ovary to pelvic brim

28
Q

What is the only abdominal organ not covered by the peritoneum?

A

the Ovaries are the only abdominal organ not covered by the peritoneum?

29
Q

What is produced in the ovaries?

A

Hormones and gametes

30
Q

What are the 2 parts of the ovaries?

A

CORTEX (OUTER) - contains primordial follicles

MEDULLA (INNER) - contains connective tissue, nerves, blood supply, lymphatics & smooth muscle tissue

31
Q

Ovarian Follicles

A
  • Born with millions of primordial follicles
  • 300-400 mature in lifetime
  • Graafian Follicle - the follicle that matures each month
  • Graafian Follicle ruptures with ovulation at approximately 1.8 TO 2.5 cm
  • After rupture, follicular cavity becomes the corpus luteum of menstruation
  • If ovum fertilized, corpus luteum remains, if not it resolves
32
Q

Ultrasound Appearance of Ovaries

A

-SIMILAR TO MYOMETRIUM IN ECHOGENICITY
-FOLLICLES GIVE “SWISS CHEESE APPEARANCE”
-POST MENOPAUSAL OVARIES DIFFICULT TO VISUALIZE
-TIPS FOR VISUALIZATION:
Turn down gains, Look for posterior enhancement, Ovary may be anterior to internal iliac vessel

33
Q

Pelvic Vascular Supply

A
  • HYPOGASTRIC ARTERY (INTERNAL ILIAC)
  • UTERINE ARTERY
  • OVARIAN ARTERY
  • VEINS HAVE SIMILAR PATTERN
  • VEINS ARE DISTENSIBLE & VARY IN SIZE WITH CERTAIN CONDITIONS