Ch. 28 Pregnancy And Human Development

Front 1

During development, the conceptus is called a(n) _______ from the fertilization through week 8, and a(n) _______ from week 9 through birth.

Back 1

Embryo; Fetus

Front 2

________ is the process by which sperm become capable of penetrating the oocyte.

Back 2

Capacitation

Front 3

How many days after ovulation does the conceptus implant on the uterine wall?

Back 3

6-7 days

Front 4

Which of the following structures form the placenta?

Back 4

Chorionic villi and decidua basalis

Front 5

Which of the following are the three components of somites?

Back 5

Dermatome, Myotome, Sclerotome

Front 6

What is the major stimulus triggering parturition?

Back 6

All of the above.

Front 7

Increased ________ stimulates the baby's first breath.

Back 7

Blood CO2 level

Front 8

When a woman's "water breaks" just before delivery, it is the ________ that ruptures.

Back 8

Amnion

Front 9

Which of the following is the first major event in organogenesis?

Back 9

Neurulation

Front 10

Which of the following structures is enclosed by a tube of endoderm and develops into the primitive gut?

Back 10

Yolk sac

Front 11

Which fetal cells digest uterine cells?

Back 11

Syncytiotrophoblasts

Front 12

Breast-feeding provides several advantages to newborns. For example, ________.

Back 12

All of the above are benefits of breast-feeding.

Front 13

The embryo implants in the uterus as a ________.

Back 13

Blastocyst

Front 14

When, in the female, is meiosis II completed?

Back 14

At fertilization

Front 15

After fertilization, a loose collection of cells forms in the uterine tube. This cluster of cells is called a ________.

Back 15

Morula

Front 16

Capacitation refers to changes occurring in ________.

Back 16

Sperm before fertilization.

Front 17

During late pregnancy and during the labor, the release of oxytocin is regulated by ________.

Back 17

Positive feedback

Front 18

At the time of birth, the uterus has enlarged to the level of the ________.

Back 18

Xiphoid Process

Front 19

In the developing fetus, all body systems are present by ________.

Back 19

8 weeks

Front 20

The neural tube and neural crest cells develop from the ________.

Back 20

Ectoderm

Front 21

Nutrients are carried from the placenta into the fetus by the _______.

Back 21

Umbilical vein

Front 22

Which extraembryonic membrane contributes to the formation of the placenta?

Back 22

Chorion

Front 23

Which hormone is responsible for increasing milk production?

Back 23

Prolactin

Front 24

The infant's head enters the true pelvis during this stage of labor.

Back 24

Engagement