OB 1 EX 7

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In the first trimester, normal hCG levels will _____.

Double every 48 hours

Follicular development and ovulation are stimulated by _____.

FSH and LH

Rectum

Lower part of intestine terminating in the anal canal

The most common site for fertilization is within the _____.

distal 3rd of the tube

The structure created by the union of sperm and egg is the _____.

zygote

Normal human cells contain how many pairs of chromosomes?

23

Fertilization typically occurs within ______ after ovulation.

24 hours

Pubic symphysis

A fibrocartilaginous union of the pubic bones

The most common site of fertilization is within the _____.

Ampulla of the uterine tube

What is the name of the dominant follicle prior to ovulation?

Graafian

Levator ani muscle group

Hammock-like muscle stretching from the pubis to the coccyx

Pubococcygeus muscle

Most anterior of three muscles forming the pelvic diaphragm

Coccygeus muscle

Part of the levator ani muscle group; only function is to provide support to the sacrum

The herniation of the embryologic bowel into the base of the umbilical cord at 9 weeks is referred to as _____.

Physiologic bowel herniation

During a first-trimester ultrasound examination, you note a cystic structure within the fetal head. This most likely represents the _____.

Rhombencephalon

Piriformis muscle

Roughly a triangular-shaped muscle; originates at the sacrum, courses laterally through the greater sciatic foramen; inserts on the greater trochanter of the femur

Vagina

Thin-walled muscular tube extending from the uterine cervix to the vestibule of the external genitalia

Obturator internus muscle

Triangular muscle extending posteromedially along both side walls of the true pelvis, parallel and adjacent to the lateral pelvic wall

What structure lies within the extraembryonic coelom?

Yolk sac

Sonographically the posterior cul-de-sac contains a small amount of clear fluid. This is MOST likely to be evidence of _____.

a normal situation

The normal position of the uterus is _____.

anteverted

A corpus luteum cyst of pregnancy is MOST likely to be seen _____.

at 8 - 16 weeks

What is the stage of the conceptus that implants within the decidualized endometrium?

blastocyst

The first sonographically identifiable sign of pregnancy is the _____.

decidual reaction

During embryogenesis, the amniotic cavity originates within the ________, while the primitive yolk sac forms adjacent to the ________.

ectoderm; endoderm

In pregnant women the hCG level will double approximately _____.

every two days

The portion of the fallopian tube closest to the ovary is the _____.

fimbriae

The first definitive sonographic sign of a intrauterine pregnancy is the recognition of a/an _____.

gestational sac

A. patient with a positive serum hCG test presents with some bleeding. The LMP indicates a 5 - 6 week gestation. Sonography indicates an empty gestational sac. The MOST likely diagnosis is a (an) _____.

normal IUP, but too early to detect a fetal pole

What hormone, produced by the corpus luteum, maintains the thickened endometrium?

progesterone

The secondary echogenic yolk sac is _____.

the first structure to be seen within the gestational sac


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