Hormonal Control Of Reproduction Flashcards
Where are hormones found
In the blood stream
What do hormones control
Puberty, sperm production and the menstrual cycle
The pituitary gland is stimulated to realease
FSH, LH and ICSH
What stimulates the pituitary gland
A released hormone im the hypothalamus
What does FSH promote in the seminiferous tubules
Sperm production
ICSH Stimulates the production of what and by in the testes
Testosterone by the interstitial cells
Does testosterone stimulate sperm production
Yes
What does testosterone do to the prostate gland
Activates it and the seminiferous tubules to produce their secretions
A high amount of testosterone in the testes cause
Inhibition of the secretion of FSH and ICSH by the pituitary gland
Where is releaser hormone produced in sperm production
Hypothalamus
What is the effect of releaser hormone in sperm production
Stimulates the release of FSH and ICSH from the pituitary gland and therefore triggers the onset of puberty
Where is FSH produced in sperm production
Pituitary gland
What does FSH do in sperm production
Promotes sperm production in the seminiferous tubules
Where is ICSH produced in sperm production
Pituitary gland
What is the role of ICSH in sperm production
Stimulates the production of testosterone
In the testes, sperm is produced by
Meiosis in the seminiferous tubules
What are the four hormones in the menestral cycle
FSH LH oestrogen and progesterone
What are the pituitary hormones in the menestral cycle
FSH and LH
What are the two ovarian hormones in the menstrual cycle
Oestrogen and progesterone
What is the role of FSH in the menstrual cycle
Stimulates the development / maturity of follicles which produces oestrogen
What is the roles of LH in the menstrual cycle
Triggers ovulation and the development of the corpus luteum
In the first half of the cycle what does oestrogen stimulate
Proliferation (cell division) of the endometrium
What is the purpose of proliferation in the endometrium
Preparation for implantation and affects the consistency of cervical mucus Making it more easily penetrated by sperm
Peak level of oestrogen in the first half of the menstrual cycle stimulates
A surge in the secretion of LH by the pituitary gland
What does the follicle develop into during the luteal phase of the menstrual cycle
A corpus luteum which secretes progesterone
What does progesterone does in the luteal phase of the menstrual cycle
Promotes further development and vascularisation of the endometrium
What’s the point of vascularisation of the endometrium
Prepares it for implantation if fertilisation occurs
What does progesterone inhibit
Secretion of FSH and LH by pituitary gland
What are the two phases of the menstrual cycle
Follicular and luteal
How long is the menstrual cycle
28 days
When does the follicular phase of the menstrual cycle take place
Days 1 to 15
What days of the menstrual cycle does the luteal phase take place
15 to 28
What hormone does FSH stimulate the ovary glands to produce
Oestrogen
Oestrogen stimulates the secretion of what hormone
LH
LH also stimulates the corpus luteum to produce the hormone
Progesterone
What is vascularisation
Turns the endometrium into a spongy layer rich in blood vessels
When does the menstrual cycle start
Day one with menstruation
What hormone does the corpus luteum secrete and what is the role?
FSH which develops the follicle and promotes oestrogen production
