Week 10 - Lab Handout

Question 1

In general, how often is a mature ovum released?

Answer 1

once a month (~28 days)

Question 2

High plasma levels of estrogen stimulates a big surge of which hormone?

Answer 2

LH

Question 3

What hormone actually brings about ovulation>

Answer 3

LH

Question 4

On which day of the ovarian cycle is production of LH greatest?

Answer 4

Day 14 - Ovulation Day

Question 5

What event in the ovarian cycle occurs immediately after LH reaches it peaks production?

Answer 5

Bursting of the follicle and releasing of the egg

Question 6

The follicle that ruptured and released the egg now forms the corpus lutuem. What is the role of the CL?

Answer 6

1. Secretes progesterone and estrogen to 2. promote the growth of the endometrium -to
2. ready it for implantation

Question 7

Which hormone steadily increases during the first half of the menstrual cycle?

Answer 7

estrogen

Question 8

What happens to the endometrium while the hormone - estrogen - is increasing?

Answer 8

1. endometrium is thickening with fluids and nutrients
2. in hopes to support an embryo

Question 9

When levels of estrogen and progesterone decline, what happens to the endometrium?

Answer 9

1. sloughs off - sheds

Question 10

During which half of the ovarian cycle is progesterone at its highest?

Answer 10

luteal phase

Question 11

If pregnancy occurs, what would happen to the levels of progesterone, FSH, LH?

Answer 11

1. Progesterone ⬆
2. FSH ⬇
3. LH ⬇

Question 12

If pregnancy occurs, what happens to the lining of the endometrium?

Answer 12

1. remains thick
2. develops rich blood supply
3. forms connections with the placenta to supply the goodies the baby needs

Question 13

Birth control - Method:

Stops sperm from joining with an egg - prevents fertilization

Answer 13

Bit control pill

Question 14

Birth control - Method:

Pulling out before ejaculation

Answer 14

Withdrawal

Question 15

Birth control - Method:

Block the cervix and slows down the sperm - making it harder for them to swim to an egg

Answer 15

Spermicides alone

Question 16

Birth control - Method:

cutting the vas deferens to stop sperm

Answer 16

vasectomy

Question 17

Birth control - Method:

Not allowing the sperm to fertilize the egg

Answer 17

IUD

Question 18

Birth control - Method:

Barrier to prevent sperm from traveling to cervix

Answer 18

Condom

Question 19

Birth control - Method:

Calendar method - tracking

Answer 19

Rhythm

Question 20

Birth control - Method:

Suppresses GnRH by hypothalamus, & LH & FSH. Implanted beneath the skin

Answer 20

Progestin implant

Question 21

Birth control - Method:

Fallopian tubes tied - female

Answer 21

Tubal ligation

Question 22

Birth control - Method:

1. Barrier to prevent sperm fertilizing the egg -
2. spermicide to kill any sperm that could get past

Answer 22

Diaphragm & spermicide

Question 23

Birth control - Method:

Delaying or preventing ovulation

Answer 23

Morning after pill

Question 24

Birth control - Method:

Ends pregnancy by blocking the action of the hormone (progesterone) that support pregnancy.

Answer 24

RU486