G10 Hormones and the Reproductive System(Hormones Controlling the Male Reproductive System) Flashcards
process of gametogenesis that occurs in males
Spermatogenesis
involves the production and development of gametes or sex cells
Gametogenesis
Gametogenesis involves the production and development of gametes or sex cells. Thus, gametogenesis in males involves the maturation of sperm cells from spermatogonia into adult sperm cells.
Adult sperm cells are capable of _, and thus will be able to fertilize an egg cell.
motility
The process of spermatogenesis is triggered when the Sertoli cells of the testes receive FSH released by the hypothalamus.
Puberty in males is controlled by two hormones
follicle stimulating-hormone (FSH) luteinizing hormone (LH)
Puberty in males is controlled by two hormones: follicle stimulating-hormone (FSH) and luteinizing hormone (LH). These two hormones are released in response to another hormone, known as
gonadotropin-releasing hormone (GnRH).
At the onset of puberty, the hypothalamus starts secreting high pulses of _. In response, the anterior pituitary gland secretes FSH and LH.
gonadotropin-releasing hormone (GnRH)
goes into the testes and stimulates the Sertoli cells
Follicle Stimulating Hormone(FSH)
cells around which spermatids develop in the tubules of the testes
Sertoli cells
FSH goes into the testes and stimulates the Sertoli cells.
Sertoli cells are cells around which spermatids develop in the tubules of the testes.
Hence, FSH initiates sperm cell production or _.
spermatogenesis
enters the testes and stimulates the interstitial/Leydig cells.
Luteinizing Hormone/LH
produce and release testosterone into the testes and the blood
interstitial cells/Leydig cells
the primary male sex hormone
Testosterone
responsible for the secondary sex characteristics that develop in the male during adolescence.
Testosterone
Testosterone is essential in
spermatogenesis
Testosterone is produced in the
Leydig cells of the testes
Testosterone is produced in the Leydig cells of the testes. This happens when the pituitary gland releases
Luteinizing Hormone/LH
The processes are initiated when GnRH stimulates the production of FSH and LH to start the production of sperm cells.
=Recall that there are feedback mechanisms in place in the body to make sure that the proper signals are released in order to control certain processes.=
occurs when a change sensed by the body occurs. What the body does in response is to produce a signal, usually in the form of hormones, in order to reverse this change
Negative feedback
For example, the production of testosterone will have a negative feedback effect on the pituitary gland in order to inhibit the release of hormones like FSH, LH, and GnRH
negative feedback mechanisms involved in males
testosterone levels increase beyond the normal range==feedback system occurs to inhibit the pituitary’s production of FSH, LH, and GnRH
a hormone produced by Sertoli cells that is released into the blood when the sperm count is high
inhibin
occurs when a stimulus causes a response, which leads to a cascade of repeating events until a change is achieved
Positive feedback
The release of LH and FSH have positive feedback effects
causes the Leydig cells of the testes to produce more testosterone
LH
stimulates the Sertoli cells to stimulate spermatogenesis through the release of other male hormones
FSH
Puberty in males is controlled by two hormones: follicle stimulating-hormone (FSH) and luteinizing hormone (LH).
Spermatogenesis is the process of gametogenesis that occurs in males. It is primarily controlled and initiated by testosterone.
Testosterone is the primary male sex hormone. It is responsible for the secondary sex characteristics that develop in the male during adolescence.
Negative feedback occurs when a change sensed by the body occurs. What the body does in response is to produce a signal, usually in the form of hormones, in order to reverse this change.
Positive feedback occurs when a stimulus causes a response, which leads to a cascade of repeating events until a change is achieved.
