Module 5A

Question 1

begins when a sperm successfully fertilizes an egg

Answer 1

Prenatal Development

Question 2

refers to the production or
development of a mature egg from one of the hundred thousands of oocytes (immature eggs) to become a mature egg

Answer 2

Oogenesis

Question 3

begins before birth but ovulation
occurs once a month from puberty to
menopause

Answer 3

Oogenesis

Question 4

viable and can be fertilized, for approximately 24 hours after ovulation

Answer 4

Ova

Question 5

the maturation of the immature sperms inside the testes

Answer 5

Spermatogenesis

Question 6

Immature to mature sperm takes about ______ days

Answer 6

53

Question 7

Sperms are viable for ______ hours and believe to have maximum fertilizing capacity for only ______ hours

Answer 7

72 hours, 24 hours

Question 8

starts when a million of sperms are ejaculated into the vagina during intercourse

Answer 8

Fertilization

Question 9

out of millions, only _________ of sperms can survive the acidity of the vagina and swim upward through the movement of their flagella-uterus fallopian tube to meet the egg

Answer 9

few thousands

Question 10

it takes _________ for the sperm and egg to meet

Answer 10

15 minutes to 3 days

Question 11

the capsule that surrounds the egg
where the sperm penetrates

Answer 11

Zona pellucida

Question 12

once the sperm and the egg merge it results to a zygote with

Answer 12

46 chromosomes (23 from each parent)

Question 13

zygote remains in mobile state travelling from the fallopian tube to reach uterus in _______ days

Answer 13

3-4 days

Question 14

Have identical genes and must be of the same sex

Answer 14

Monozygotic Twins (Identical Twins)

Question 15

No more genetically
similar than any other sibling in the family (can be same/different
sexes)

Answer 15

Dizygotic Twins (Fraternal Twins)

Question 16

occurs when a mitotic division is incomplete

Answer 16

Conjoined Twins

Question 17

During implantation, zygote takes the form of _________with an inner cell mass (future embryo) and an outer cell mass
(future placenta)

Answer 17

blastocyst

Question 18

is formed from both mother and fetal tissues as early as 1 week

Answer 18

placenta

Question 19

is a temporary disc-shaped organ that connect the fetus to the uterine wall

Answer 19

placenta

Question 20

is the connecting link between the fetus and the placenta

Answer 20

Cord

Question 21

From 4th to 8th weeks of development

Answer 21

Period of the Embryo

Question 22

From 9 weeks after conception to birth

Answer 22

Period of the Fetus

Question 23

By the end of the
first month, the
embryo is about_________ long.

Answer 23

1/10 of an inch

Question 24

The embryo is about
1 inch long and has
distinct, slightly
webbed fingers.
Veins are clearly
visible. The heart
has divided into right
and left chambers

Answer 24

two months into preganancy

Question 25

the fetus is 2 1/2 to 3 inches long and is fully formed. He has begun swallowing and kicking. All organs and muscles have formed and are beginning to function.

Answer 25

three months into pregnancy

Question 26

Your baby is covered with a layer of thick, downy hair called lanugo. His heartbeat can be heard clearly. This is when you may feel your baby's first kick

Answer 26

four months into pregnancy

Question 27

A protective coating called vernix caseosa begins to form on baby's skin. By the end of this month, your baby will be nearly 8 inches long and weigh almost a pound

Answer 27

five months into pregnancy

Question 28

Eyebrows and eyelids are visible. Your baby's lungs are filled with amniotic fluid, and he has started breathing motions. If you talk or sing, he can hear you.

Answer 28

Six Months

Question 29

your baby weighs about 3 1/2 pounds and is about 12 inches long. His body is well-formed. Fingernails cover his fingertips

Answer 29

Seven Months

Question 30

Your baby is gaining about half a pound per week, and layers of fat are piling on. He has probably turned head-down in preparation for birth. He weighs between 4 and 6 pounds.

Answer 30

Eight Months

Question 31

Your baby is a hefty 6 to 9 pounds and measures between 19 and 22 inches. As he becomes more crowded, you may feel him move around less.

Answer 31

Nine Months

Question 32

General Risk Factors

Answer 32

Nutrition, Stress, Mother's age

Question 33

adequate amount of food, protein, vitamins, & minerals

Answer 33

Nutrition

Question 34

decreases oxygen to fetus and weakens mother’s immune system

Answer 34

Stress

Question 35

Substances that may harm the developing fetus and result in the formation of birth defects

Answer 35

Teratogens

Question 36

a test that takes a small sample of the amniotic fluid

Answer 36

amniocentesis

Question 37

when is amniocentesis offered to women?

Answer 37

between the 15th and 20th weeks of pregnancy who are at higher risk for chromosome problems

Question 38

involves taking a sample of some of the placental tissue

Answer 38

chorionic villus sampling

Question 39

can be tested for chromosome problems and some other genetic problems

Answer 39

chorionic villus sampling