Human Reproduction and Care of Developing Fetus

Question 1

It is the union of the ovum and a spermatozoon, in the outer 3rd of the fallopian tube, in the ampullar segment

Answer 1

Fertilization

Question 2

Known as the beginning of pregnancy

Answer 2

Fertilization

Question 3

The mature ovum is surrounded by

Answer 3

ZONA PELLUCIDA and the CORONA RADIATA

Question 4

What do the ZONA PELLUCIDA and the CORONA RADIATA do?

Answer 4

Both serve to increase the bulk of the ovum and serve as buffers against injury

Question 5

is released by the sperm & dissolves the protective CORONA RADIATA

Answer 5

HYALURONIDASE

Question 6

Multiple sperm enter leading to abnormal growth

Answer 6

HYDATIDIFORM MOLE

Question 7

How does a zygote form?

Answer 7

After the process of entering through HYDATIDIFORM MOLE, the chromosome material then fuses and that’s how the zygote form.

Question 8

T/F during ovulation, cervical mucus is large making the sperm able to penetrate it

Answer 8

F. The cervical mucus should be thin in order for the sperm to penetrate it

Question 9

Sperms reach the cervix within 80 seconds & the outer end of the fallopian tube within 5 minutes after disposition

Answer 9

ORGASM

Question 10

Sperm move by the wavelike movement of the flagella and uterine contractions through the cervix, body of the uterus into the fallopian tube toward the waiting ovum

Answer 10

PHONONES/Song of the sperm

Question 11

changes in the plasma membrane of the sperm head, which reveal the sperm-binding receptor sites

Answer 11

Capacitation

Question 12

It is large cells tend to collect at the periphery of the ball, leaving a fluid space surrounding an inner cell mass and is termed as

Answer 12

Blastocyst

Question 13

What are the parts of the Blastocyst?

Answer 13

Trophoblast, embryoblast, and blastocyst cavity

Question 14

How many days does the implantation (NIDATION) or contact between the blastocyst and the endometrium occur?

Answer 14

Occurs 8 to 10 days after fertilization

Question 15

Promotes milk production

Answer 15

Prolactin

Question 16

Relaxes CT of the symphysis pubis & pelvic ligaments promotes cervical dilatation

Answer 16

Relaxin (peptide hormone)

Question 17

Potent, hormone-like fatty acid

Answer 17

Prostaglandins

Question 18

What are the 3 phases of Implantation?

Answer 18

1. Apposition
2. Adhesion
3. Invasion

Question 19

blastocyst brushes against the endometrium

Answer 19

Apposition

Question 20

blastocyst attaches to the surface of the endometrium

Answer 20

Adhesion

Question 21

blastocyst settles down into the soft folds of the endometrium receiving the nourishment of glucogen, mucoprotein from the endometrial glands

Answer 21

Invasion

Question 22

How does a zygote form once it is implanted?

Answer 22

Embryo

Question 23

lies directly under the embryo (or the portion where the trophoblast cells are establishing communication with maternal blood vessels)

Answer 23

Decidua basalis

Question 24

the portion that stretches or encapsulates the surface of the trophoblast

Answer 24

Decidua capsularis

Question 25

The remaining portion of the uterine lining

Answer 25

Decidua vera

Question 26

Supply nourishment only until implantation after which

Answer 26

Yolk Sac

Question 27

What are the 2 layers of the outer portion?

Answer 27

syncytiotrophoblast & cytotrophoblast

Question 28

outer layer or syncytial layer

Answer 28

syncytiotrophoblast

Question 29

The inner layer, present at 12 days gestation and also called as Langhans Layer

Answer 29

cytotrophoblast

Question 30

It provides a circulatory pathway that connects the embryo to CV of the placenta

Answer 30

Umbilical Cord

Question 31

gelatinous mucopolysaccharide which gives the cord body & prevents pressure on the blood volume

Answer 31

Wharton’s jelly

Question 32

Conception occurs in the fallopian tube, the most common site of which is the

Answer 32

Ampulla

Question 33

The most common site of implantation is which part of the uterus

Answer 33

Uterine fundus, posterior portion

Question 34

The period from two weeks to two months following fertilization is the stage of the

Answer 34

Embryo

Question 35

Callie, 18 years of age, asks how much longer her nurse will refer to the baby inside her as an embryo. The nurse is correct in saying that the conceptus is classified as an embryo

Answer 35

From implantation until 5 to 8 weeks