Unit 12: Female Reproductive System

Question 1

What is the function of the labia majora?

Answer 1

Protection of inner structures

Question 2

Which part of the ovary releases the secondary oocyte during ovulation?

Answer 2

Cortex

Question 3

When does oogenesis begin in humans?

Answer 3

During fetal development

Question 4

What triggers the completion of the first meiotic division in oogenesis?

Answer 4

Ovulation

Question 5

What structure forms from the ruptured follicle after ovulation?

Answer 5

Corpus luteum

Question 6

In which part of the uterine tube does fertilization usually occur?

Answer 6

Ampulla

Question 7

What event typically triggers the start of menstruation?

Answer 7

Drop in estrogen and progesterone

Question 8

Which phase of the uterine cycle occurs immediately after ovulation?

Answer 8

Secretory Phase

Question 9

What happens immediately after a sperm successfully penetrates the egg (oocyte?)

Answer 9

oocyte completes meiosis II

Question 10

Which extraembryonic membrane is responsible for forming the fetal part of the placenta?

Answer 10

chorion

Question 11

Which structure forms during gastrulation and serves as the cite where cells migrate inward?

Answer 11

primitive streak

Question 12

What is the primary hormone for stimulating hormones during labour?

Answer 12

Oxytocin

Question 13

Compare and contrast the ovarian cycle and uterine cycles. How are the interrelated? explain the development of each stage in each cycle.

Answer 13

1. Ovarian Cycle begins with follicular phase, Uterine Cycle begins with the menstrual phase. Follicles developing and shedding uterine lining.
2. Follicular Phase continues, Proliferative Phase of Uterine Cycle begins. New functional layer of endometrium occurs.
3. Ovulation Occurs; Secondary oocyte released.
4. Final Phase of Ovarian Cycle = Luteal Phase. FInal Phase of Uterine cycle = Secretory Phase.
   Corpus luteum is secreting progesterone which maintains and builds uterine lining and the impact of the uterine cycle is uterus becomes more vascularized and uterine glands develop.

Question 14

What would happen if a mutation prevented development of the syncytiotrophoblast cell layer?

Answer 14

Syncytiotrophoblast is 1 of 2 early membranes that develops in blastocyst after implantation.

Without this layer, implantation will not occur therefore no secretion of hCG will occur; body will not receive implantation signal.

Without this layer; the uterine lining will degenerate and menstruation will occur.