Bio202 In Lesson #13 Chapter 29 Human Development Pre-Exam

Front 1

Fertilization of the ovum usually occurs

Back 1

in the upper 1/3 of the uterine tube

Front 2

Sperm cannot fertilize an egg until they

Back 2

undergo capacitation

Front 3

All of the following are true during oocyte activation except

a. the metabolic rate of the oocyte increases
b. the ovum completes meiosis II
c. other sperm are prohibited from fertilizing the egg
d. the ovum begins mitosis

Back 3

d. the ovum begins mitosis

Front 4

The period of gestation that is characterized by rapid fetal growth is the ________ trimester.

Back 4

third

Front 5

The period of gestation when the rudiments of all major organ systems appear is the ______ trimester

Back 5

first

Front 6

The period of gestation when organs and organ systems complete most of their development and the fetus looks distinctly human is the _______ trimester.

Back 6

second

Front 7

The process of cell division that occurs after fertilization is called

Back 7

clevage

Front 8

The penetration of the endometrium by the blastocyst is referred to as

Back 8

implantation

Front 9

The solid ball of cells that is formed after several rounds of cell division following fertilization is called a

Back 9

morula

Front 10

The inner cell mass of the blastocyst will

Back 10

form the embryo

Front 11

During implantation the

Back 11

syncytial trophoblast erodes a path through the endometrium

Front 12

Under the influence of the trophoblast, maternal blood vessels in the endometrium

Back 12

break down to form lacunae

Front 13

Separation of the inner cell mass from the trophoblast forms the

Back 13

amniotic cavity

Front 14

During gastrulation

Back 14

germ layers are formed

Front 15

The ectoderm forms

Back 15

neural tissues

Front 16

The mesoderm forms

Back 16

muscle

Front 17

The chorionic villi

Back 17

increase the surface area available for exchange between the placenta and the maternal blood

Front 18

The endoderm forms the

Back 18

lining of the digestive tract

Front 19

The extraembryonic membrane that forms a fluid-filled sac is the

Back 19

amnion

Front 20

The hormone that is the basis for the pregnancy test is

Back 20

hCG

Front 21

Each of the following hormones is produced by the placenta except

a. human chorionic gonadotropin
b. human placental lactogen
c. relaxin
d. LH

Back 21

d. LH

Front 22

All of the following occur during pregnancy except

a. a woman's respiratory rate and tidal volume increase
b. maternal blood volume increases
c. maternal nutrient requirements increase
d. a woman's heart rate increases

Back 22

d. a woman's heart rate increases

Front 23

During gestation, powerful uterine contractions are suppressed by elevated levels of

Back 23

progesterone

Front 24

The first stage of labor is the ________ stage.

Back 24

dialation

Front 25

The stage of labor during which the fetus emerges from the vagina is called the _____ stage.

Back 25

expulsion

Front 26

All of the following occur at puberty, except

a. FSH levels rise
b. LH levels decline
c. gametogenesis begins
d. secondary sexual characteristics begin to become apparent

Back 26

b. LH levels decline

Front 27

If a sperm cell lacked sufficient quantities of hyaluronidase it would not be able to

Back 27

penetrate the corona radiata

Front 28

Problems involving the formation of the chorion would affect

Back 28

the embryo's ability to derive nutrition from the mother

Front 29

Stretching of the cervix would cause an increase in the blood levels of

Back 29

oxytocin

Front 30

An inability of the placenta to produce sufficient amount of relaxin would dictate

Back 30

that a caesarian should be performed