1) Conceptus is a term used to describe the developing human offspring. correct answers T
2) The period from fertilization through week eight is called the embryonic period. correct answers T
3) Fertilization occurs while the egg is still in the ovarian follicle. correct answers F
4) Fresh...
ch 28 Pregnancy & Development || All Correct.
1) Conceptus is a term used to describe the developing human offspring. correct answers T
2) The period from fertilization through week eight is called the embryonic period. correct
answers T
3) Fertilization occurs while the egg is still in the ovarian follicle. correct answers F
4) Freshly deposited sperm are not capable of penetrating an oocyte. correct answers T
5) By 72 hours after fertilization, the egg has divided into more than 160 cells and is called the
morula. correct answers F
6) Implantation begins six to seven days after ovulation. correct answers T
7) A pregnancy test involves antibodies that detect GH levels in a woman's blood or urine.
correct answers F
8) The body systems of the developing embryo are present in at least rudimentary form at eight
weeks. correct answers T
9) Of the three germ layers, the mesoderm forms the most body parts. correct answers T
10) A pregnant woman urinates more often than usual because the uterus compresses the
bladder, and she must also dispose of fetal metabolic wastes. correct answers T
11) The "fluid-filled, hollow ball of cells" stage of development is the blastocyst. correct answers
T
12) The embryonic stage lasts until the end of the eighth week. correct answers T
13) The embryo is directly enclosed in and protected by the amnion. correct answers T
14) In fetal circulation, one way in which blood bypasses the nonaerated lungs is by way of the
foramen ovale. correct answers T
15) An episiotomy is an incision made to widen the vaginal orifice, aiding fetal expulsion.
correct answers T
16) The placenta and its attached fetal membranes are collectively called the afterbirth. correct
answers T
17) Human placental lactogen initiates labor. correct answers F
, 18) Surfactant production in premature infants is rarely a factor in providing normal respiratory
activity. correct answers F
19) A blastocyst is a hollow ball of cells, while the morula is a solid ball of cells. correct answers
T
20) A zygote is usually formed within the uterus. correct answers F
1) What destroys the sperm receptors on the surface of the oocyte?
A) the acrosomal reaction
B) zonal inhibiting proteins
C) the process of capacitation
D) human placental lactogen correct answers B
2) The result of polyspermy in humans is ________.
A) multiple births
B) a nonfunctional zygote
C) interruption of meiosis
D) mitotic insufficiency correct answers B
3) It is impossible for sperm to be functional (able to fertilize the egg) until after ________.
A) the tail disappears
B) they become spermatids
C) they undergo capacitation
D) they have been stored in the uterus for several days correct answers C
4) Milk ejection or letdown reflex is stimulated by which of the following hormones associated
with pregnancy?
A) inhibin
B) oxytocin
C) prolactin
D) gonadotropin correct answers B
5) Estrogen and progesterone maintain the integrity of the uterine lining and prepare the
mammary glands to secrete milk. Which of the following structures makes this possible during
the first three months of pregnancy?
A) the amnion
B) the chorion
C) corpus luteum
D) corona radiata correct answers C
6) The placenta, a vitally important metabolic organ, is made up of a contribution from mother
and fetus. Which portion is from the fetus?
A) chorion
B) umbilicus
C) yolk sac
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller FullyFocus. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
