hormonal control

Question 1

pituitary gland

Answer 1

• secretes Follicle stimulating hormone and luteinizing hormone
• negative feedback mechanism

Question 2

how does the process work?

Answer 2

• FSH develops primary follicle into Graafian follicle and oestrogen is produced
• oestrogen stimulates LH stimulation
• LH cause Graafian follicle to form corpus luteum
• progesterone levels increased and oestrogen (negative feedback)
• cycle starts again because pituitary is no longer suppressed

Question 3

what is menopause?

Answer 3

• ovaries stop producing oestrogen and progesterone
• stop releasing eggs
• no menstruation
• atrophy (degeneration of sexual organs)
• bone mass loss
• increasing risk of cardiac disease
• hormone replacement therapy (HRT)

Question 4

what is the difference between copulation and fertilisation?

Answer 4

• copulation : coitus; sperm deposited near cervix; start journey to fallopian tubes
• fertilisation : fusion of sperm nucleus with eggs nucleus to form zygote (diploid)