Flashcards in Unit 2: Hormonal control of Reproduction Deck (15)
What is the role of the releaser hormone?
The releaser hormone is secreted from the hypothalamus to stimulate the pituitary gland.
What is the role of ISCH i n sperm production?
It promotes the production of testosterone in the interstitial cells.
What is the role of the hypothalamus in sperm production?
The hypothalamus produces a releaser hormone which stimulates the pituitary gland to release FSH and target the seminiferous tubules to promote sperm production.
What is the role of FSH in sperm production?
FSH promotes sperm production in the seminiferous tubules.
What is the role of testosterone in sperm production?
Testosterone stimulates sperm production and stimulates the seminal vesicles and the prostate gland to produce their secretions.
What is the role of the pituitary gland in sperm production?
It is stimulated by the releaser hormone to produce FSH and ISCH.
What are the first steps in the hormonal control of sperm production?
The hypothalamus in the brain releases a releaser hormone which target is the pituitary gland. This stimulates the pituitary gland to produce FSH and ICSH which go to the testes.
What does FSH do in the testes?
FSH stimulates sperm production in the seminiferous tubules.
What does ICSH do in the testes?
ICSH stimulates the interstitial cells to produce testosterone. The testosterone stimulates sperm production in the seminiferous tubules and the seminal vesicles and the prostate gland to produce their secretions.
What can testosterone do if its levels increase?
Negative feedback can occur if levels of testosterone increase. it sends a message to the pituitary gland to inhibit the FSH and ICSH. This causes the levels of testosterone to drop and leads to the resumption of activity by the pituitary gland.
What is the role of oestrogen in the control of hormonal menstrual cycle?
The oestrogen hormone is released from the ovary and this travels the the endometrium to cause the proliferation of the endometrium.
What is the role of FSH in the in the control of hormonal menstrual cycle?
It stimulates the development of one egg inside a follicle and stimulates the ovary to release oestrogen.
What is the role of progesterone in the control of hormonal menstrual cycle?
Progesterone travel to the endometrium and causes the vascularisation of the endometrium, which means it becomes thick and spongy in preparation to receive an early embryo.
What is the role of LH in the control of hormonal menstrual cycle?
It triggers ovulation and stimulates the development of a follicle into a corpus luteum.