Puberty And Menstrual Cycle Flashcards
What happens at puberty
Your body starts releasing sex hormones
What does sex hormones trigger
Secondary sexual characteristics
What’s an example of secondary sexual characteristics
Development of facial hair for men and breasts in women
What do female sex hormones cause
Eggs to mature (develop) in women
What is the main reproductive hormone for men
Testosterone
What does testosterone in men stimulate
Sperm production.
What is the main reproductive hormone in women
Oestrogen
What is oestrogen produced by
The ovaries
What is oestrogen involved in
The menstrual cycle
How many stages does the menstrual cycle have
It has four stages
What is the first stage in the menstrual cycle
When the bleeding starts. The uterus lining breaks down for about four days
What is stage 2 of the menstrual cycle
The uterus lining builds up again from day 4 to 14 , turns into layer full of blood vessels and is ready to receive a fertilised egg
What happens on the third stage of the menstrual cycle
An egg is released from an ovary. This is called ovulation
What happens on the 4th stage of the menstrual cycle
The wall is kept the same. If no fertilised egg has landed on the uterus wall, the lining breaks down and the cycle starts again
What are the 4 hormones the menstrual cycle is controlled by
FSH (follicle-stimulating hormone)
LH (luteinising hormone)
Oestrogen
Progesterone
