Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy > 3-Ovulation, Fertilization... > Flashcards

3-Ovulation, Fertilization... Flashcards

1
Q

Late primary follicle

A
  • multilaminar now called granulosa cells
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Gel-like substance rich in GAGs

A

Zona pellucida

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q
  • ovulation to implantation
  • embryonic period
  • fetal stage
A

Prenatal develop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

First 8 weeks

A

Embryonic period

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

8 weeks till birth

A

Fetal stage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

In ovulationThe secondary follicle grows rapidly under the influence

A

of FSH and LH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Meiosis II is initiated but the Oocyte is arrested in

A

Metaphase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

High concentration of LH increases

A

Collagenase activity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Stimulates production of progesterone by follicular stromal cells

A

Luteinization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

increase in response to LH and cause local muscular contractions in the ovarian wall.

A

Prostaglandin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Corpus luteum are yellowish which are developed under the effect of which hormone and secrete progesterone?

A

LH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What causes the uterine mucosa to enter the secretory phase ( preparation for implantation)?

A

Progesterone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The oocyte is viable for how many hours?

A

12-24 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The sperm is viable for how much hours?

A

24-72 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

For fertilization to occur, coitus must occur no more than

A
  • Three days before ovulation

* 24 hours after ovulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

when a sperm fuses with an egg to form a zygote

A

Fertilization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Capacitation

A

a period of conditioning in the female reproductive tract.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

In human lasts approximately 7 hrs.

A

Capacitation

19
Q

Capacitation

A

Occurs more in the uterine tube

20
Q

Capacitation

A

Epithelial interactions between the sperm and mucosal surface of the tube

21
Q

glycoprotein coat and seminal plasma proteins are removed from the plasma membrane that overlies the acrosomal region of the spermatozoa.

A

During the time of capacitation

22
Q

An ovulated oocyte is encapsulated by:

A
  • The corona radiata and zona pellucida

* Extracellular matrix

23
Q

Hundreds of acrosomes release their enzymes to digest the

A

Zona pellucida

24
Q

Once a sperm makes contact with the oocyte’s membrane:

A
  • Beta protein finds and binds to receptors on the oocyte membrane
  • Alpha protein causes it to insert into the membrane
25
Q

increase in cellular respiration and protein synthesis in egg

A

Egg activation

26
Q

Only one sperm is allowed to penetrate the oocyte

A

Block to poly spermy

27
Q

Completion of Meiosis II

A

Upon entry of sperm

28
Q

when the pronuclei come together

A

Fertilization

29
Q

The first cleavage produces two daughter cells called

A

blastomeres

30
Q

the 16 or more cell stage (72 hours old)

A

Morula

31
Q

the preembryo consists of 100 or so cells (blastocyst)

A

By the fourth or fifth day

32
Q

a fluid-filled hollow sphere composed of:
• A single layer of trophoblasts
• An inner cell mass

A

Blastocyst

33
Q

take part in placenta formation

A

Trophoblasts

34
Q

becomes the embryonic disc

A

The inner cell mass

35
Q

Implanting blastocyst

A

6 days

36
Q

Implantation of the Blastocyst

A

Begins six to seven days after ovulation when the trophoblasts
adhere to a properly prepared endometrium

37
Q

Syncytiotrophoblast

A

cells in the outer layer that lose their plasma membranes and invade the endometrium secret human chorionic gonadotropin (hCG)

38
Q

Implantation is completed by

A

the fourteenth day after ovulation

39
Q

Viability of the corpus luteum is maintained by

A

human chorionic gonadotropin (hCG) secreted by the trophoblasts

40
Q

hCG prompts the corpus luteum to continue to secrete

A

progesterone and estrogen

41
Q

Between the second and third month, the placenta:

A
  • Assumes the role of progesterone and estrogen production

* Is providing nutrients and removing wastes

42
Q

The most common form of human ectopic pregnancy is described as a

A

tubal

pregnancy (implantation occurs within the uterine tube).

43
Q

Ectopic pregnancies are therefore often identified by

A

early ultrasound scans.

44
Q

• The risk factors for tubal ectopic pregnancy include:

A
  • Tubal damage by infection (particularly Chlamydia trachomatis) or surgery, smoking and in vitro fertilization therapy.
  • Prolonged tubal damage is often described as pelvic inflammatory disease and , can affect the cilia- mediated transport of the blastocyst during the first week of development.

Anatomy (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions