Week 1 Lecture Review

Question 1

Clinically oriented embryology

Answer 1

Bridges the gap between prenatal development and obstetrics, perinatal medicine, pediatrics, and clinical anatomy; Develops knowledge concerning the beginnings of life and the changes occurring during prenatal development; Builds an understanding of the causes of variations in human structure; Illuminates clinically oriented anatomy and explains how normal and abnormal relations develop

Question 2

Most visible changes occur during what period of development?

Answer 2

3 - 8 weeks

Question 3

In what year was the first test tube baby born?

Answer 3

1978

Question 4

How long does the entire process of spermatogenesis take?

Answer 4

2 months

Question 5

What is the rate of early spontaneous abortion?

Answer 5

45%

Question 6

Which teratogen caused severe limb anomalies in the 1960s?

Answer 6

thalidomide

Question 7

Which teratogen was documented as the first time that concrete evidence was presented that
showed that a developing fetus could be adversely affected by an environmental factor (1941)?

Answer 7

rubella

Question 8

This disorder that is commonly screened for via genetic carrier screening can also play a role in
male infertility as it can cause congenital absence of the vas deferens.

Answer 8

Cystic fibrosis

Question 9

T/F: Birth defects cause most deaths during infancy.

Answer 9

True

Question 10

This week of gestation marks the beginning of the fetal period.

Answer 10

9th

Question 11

T/F: During the embryonic period, differentiation and growth of tissues and organs occur and the rate of
body growth increases.

Answer 11

False

Question 12

T/F: Understanding causative relationships between embryology and development is essential for
educating parents and families with regards to etiology and especially to dispel parental feelings of guilt
regarding birth defects.

Answer 12

True

Question 13

T/F: At week 10 genitalia have male/female characteristics and are fully formed.

Answer 13

False

Question 14

T/F: The timing of events during meiosis is the same between the 2 sexes.

Answer 14

False

Question 15

T/F: The second meiotic division is similar to mitosis except that the cells are haploid.

Answer 15

True

Question 16

T/F: Nondisjunction [mostly] occurs at the 1st meiotic division.

Answer 16

True

Question 17

T/F: Some oogonia develop into primary oocytes before birth and some develop after birth.

Answer 17

False

Question 18

T/F: The division of cytoplasm is equal in spermiogenesis and oogenesis.

Answer 18

False

Question 19

T/F: The presence of a corpus luteum cyst on an early ultrasound is a finding that should concern a
clinician and is related to adverse outcome.

Answer 19

False

Question 20

T/F: Freshly ejaculated sperms are able to fertilize an oocyte.

Answer 20

False

Question 21

T/F: Although fertilization can occur in other parts of the uterine tube (normally happens in the ampulla),
it does not occur in the body of the uterus.

Answer 21

True

Question 22

T/F: The synctiotrophoblast has definite cell boundaries and is mitotically active.

Answer 22

False

Question 23

T/F: There is enough detectable hCG by the end of the 2nd week of pregnancy to give rise to a positive
pregnancy test.

Answer 23

True

Question 24

T/F: Growth of the bilaminar disc is slow in comparison to the trophoblast.

Answer 24

True

Question 25

T/F: At 14 days the embryonic disc is still flat and structures that will organize the fetal head are already
present.

Answer 25

True

Question 26

Women who suffer from anovulation may take a simple hormonal stimulator which may result in several
ovarian follicles and multiple ovulations. The common name of this drug is

Answer 26

clomid

Question 27

There are sperm(s) that result from one primary spermatocyte.

Answer 27

4

Question 28

There are oocyte(s) that result from maturation of primary oocyte.

Answer 28

1

Question 29

The _____ is another term for “yolk sac”, which actually contains no yolk in humans.

Answer 29

umbilical vesicle

Question 30

More than ___% of all known spontaneous abortions result from chromosomal abnormalities

Answer 30

50