Unit 2: book 1 Flashcards
(85 cards)
Where is the site of sperm production
Testes in seminiferous tubules
Where is the site of testosterone production
Testes in the interstitial cells
Where exactly is the sperm formed
Seminiferous tubules
What are the cells between the seminiferous tubules
Interstitial cells
What do interstitial cells produce
Testosterone
Where are oestrogen and progesterone produced
The ovaries
What is ovulation
When a mature ovum is released from the ovary into the oviduct
What is each ovum surrounded by
A follicle
What does the follicle secrete
Oestrogen
What does the follicle produce after ovulation
Progesterone , as well as oesterogen
What is fertilisation
Mature ova is released into the oviduct. If sperm is present, fertilisation may take place
What is a fertilised egg known as
Zygote
Name three reproductive processes that hormones control
Ovulation, sperm production, puberty
Name two female hormones produced by the pituitary
LH (luteinising hormone) and FSH (follicle stimulating hormone)
What does testosterone do
Stimulates sperm production
What does high levels of oestrogen do to the cells lining the cervix
Increases cell division which repairs the endometrium
Name the two hormones that progesterone inhibits
FSH & LH
What is puberty triggered by
The hypothalamus secretes a releaser hormone whose target is the pituitary
What is ICSH
Interstitial cell stimulating hormone
What is negative feedback control
As testosterone concentration builds up in the bloodstream it reaches a level that inhibits FSH and ICSH secretion. This leads to a decrease in testosterone production
What are the 2 phases of the menstrual cycle
Follicular phase and luteal phase
How long does the menstrual cycle take
28 days
What is the first phase of the menstrual cycle
The follicular phase
What is the second phase of the menstrual cycle
The luteal phase