B11.6 The Mestrual Cycle

Question 1

What are different stages of the menstrual cycle ?

Answer 1

Day 1- bleeding
Linining builds
Day 14- egg released around three days later the period stops
Day 14-28- lining maintained

Question 2

What event happens in days 1-5, what hormone is released and from where along with what it stimulates.

Answer 2

Period menstratuon
Hormone- FSH, pituitary gland
Stimulates oestrogen

Question 3

What happens on days 5-14, what hormone is released, where it is released from and what it’s effect is.

Answer 3

Event- lining of walls builds
Hormone- estrogen, ovaries
Effect, inhibits FSH and stimulates LH

Question 4

What happens on day 14, what hormone is released, from where and what is it’s effect.

Answer 4

Egg released
LH, pituitary gland
None

Question 5

What happens on days 14-28, what hormone is released, from where and effect on other hormones

Answer 5

Lining wall maintained
Progesterone, ovary
Effect: inhibits FSH and LH

Question 6

What time after the period would pregnancy be least likely and why ?

Answer 6

After period up until ovulation around days 5-14
No egg is released so no fertilization

Question 7

During which time frame would pregnancy be most likely ?

Answer 7

After ovulation up until period
Egg is released so it can be fertilized

Question 8

What is the order of chemicals

Answer 8

Day 1-5 FSH - pit
Day 5-14 oestrogen - ovaries
Day 14 LH - pit
Day 14-28 progesterone- ovaries