Fertility Cycle

Question 1

Fertility/Menstrual Cycle

Answer 1

The cycle of physiological preparations for a possible pregnancy.

Question 2

Production of Oocytes

Answer 2

new oocytes needed after previous one degenerates

Question 3

Conservation of Energy

Answer 3

the endometrium requires a lot of energy to maintain.

Question 4

Protection against pathogens

Answer 4

Shedding of uterine lining, and cervical mucus protect against pathogens.

Question 5

Other effects of Fertility Cycle

Answer 5

short term partner preference changes, long term does not.
Fluctuations in attraction to partner
Stronger preferences for symmetrical male scents at mid-cycle.

Question 6

Average cycle length

Answer 6

28 days. Varies between cycles and women, stress can lengthen cycle. Most cycles are not 28 days.

Question 7

preovulatory phase

Answer 7

menstruation to ovulation. Ovulation cannot be predicted from menstruation.

Question 8

post-ovulatory phase

Answer 8

ovulation to beginning of menstruation. relatively constant. Menstruation can be predicted based on ovulation.

Question 9

Menstrual Phase

Answer 9

1st phase, bleeding indicates day 1. Surface layer of endometrium is lost. Deep layer remains.

Question 10

Menarche

Answer 10

the start of menstruation. Occurs earlier than previous centuries because of better nutrition.

Question 11

Menopause

Answer 11

the end of menstruation. Due to lack of follicles, which cause estrogen decrease.

Question 12

Proliferative phase

Answer 12

2nd phase of fertility cycle. FSH, Estrogen, LH levels increase.

Question 13

Follicle Stimulating Hormone (FSH)

Answer 13

peaks shortly before ovulation. Stimulates follicle development.

Question 14

Estrogen (Fertility Cycle)

Answer 14

produced by cells of mature follicle. Increases sensitivity to progesterone. Thickens endometrium to aid implantation. Promotes cilia growth in uterine tube. Creates E mucus.

Question 15

Luteinizing hormone (LH) Surge

Answer 15

Peak in LH that causes ovulation

Question 16

Corpus luteum

Answer 16

follicle cells left in ovary after ovulation. Produces estrogen and progesterone.

Question 17

Secretory Phase

Answer 17

last phase in fertility cycle. Ovulation occurs. Corpus luteum is created. Progesterone rises.

Question 18

Progesterone (Fertility Cycle)

Answer 18

thickens cervical mucus, promotes nutrient secretion in uterine tubes. Prevents new follicle development by blocking FSH and LH. Increases body temperature

Question 19

Pregnancy

Answer 19

not a phase of fertility cycle. Interrupts fertility cycle, new hormone patterns develop.

Question 20

HCG

Answer 20

produced by placenta. Maintains corpus luteum to produce estrogen/progesterone to prevent menstruation and maintain endometrium.

Question 21

Estrogens (Pregnancy)

Answer 21

produced by placenta. rises throughout pregnancy. Increase muscle tissue to push baby out. Allows uterus to grow as baby grows.

Question 22

Progesterone (Pregnancy)

Answer 22

Produced by placenta. Rises throughout pregnancy. Prevents uterine contractions to prevent premature birth and maintain pregnancy.