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HHB 2.2
Hormonal Control of Reproduction
16
Biology
Not Applicable
10/01/2017

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Term
hormone
Definition
protein released by an endocrine gland into the blood that acts a chemical messenger
Term
endocrine gland
Definition
gland that produces and releases hormone
Term
puberty
Definition
sequence of physical changes in an individual’s body to prepare it for reproduction
Term
hypothalamus
Definition
region of the brain that secretes releaser hormone at puberty
Term
pituitary gland
Definition
gland in the brain that releases many hormones including FSH, ICSH, LH
Term
FSH
Definition
pituitary hormone that controls development of follicles in ovaries and sperm production in males
Term
LH
Definition
pituitary hormone that triggers ovulation and corpus luteum development
Term
testosterone
Definition
hormone from interstitial cells that stimulates sperm production in the seminiferous tubules
Term
menstruation
Definition
removal of the endometrium and an unfertilised egg at the end of the menstrual cycle
Term
menstrual cycle
Definition
approximately 28 day cycle in the middle of which ovulation occurs
Term
ovulation
Definition
release of an egg from the mature follicle in the ovary
Term
follicular phase
Definition
first stage in the menstrual cycle during which a follicle develops
Term
luteal phase
Definition
second stage in the menstrual cycle in which the corpus luteum is present
Term
oestrogen
Definition
hormone produced by the developing follicle in the ovary, promotes the proliferation of the endometrium, stimulates LH production, but in high levels inhibits LH production
Term
progesterone
Definition
hormone produced by the corpus luteum in the ovary, stimulates further thickening of the endometrium and in high levels inhibit the production of LH and FSH
Term
negative feedback
Definition
system of maintaining a steady state in various body systems
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