Which gland makes ADH, FSH and LH?
Reveal answer
The pituitary gland.
Key words: pituitary
3(j) CO-ORDINATION AND RESPONSE · RECALL
3.45B ADH, FSH and LH
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What does FSH do?
Reveal answer
Matures an egg and stimulates oestrogen production.
Key words: oestrogen
What does LH do?
Reveal answer
Triggers ovulation.
Key words: ovulation
What is the target of ADH?
Reveal answer
The collecting duct of the kidney.
Key words: collecting duct
How does oestrogen affect FSH and LH?
Reveal answer
Inhibits FSH → stimulates LH surge → ovulation.
Key words: inhibits
Why use FSH and LH in IVF?
Reveal answer
FSH matures many eggs; LH triggers their release.
Key words: matures
What is meant by the term FSH?
Reveal answer
Follicle-stimulating hormone acting on ovaries and testes.
Key words: FSH
What is meant by the term LH?
Reveal answer
Luteinising hormone acting on ovaries and testes.
Key words: LH
What is meant by the term ovulation?
Reveal answer
Release of a secondary oocyte from an ovary.
Key words: ovulation
Higher-tier hormone map: for ADH, give the source/release site and the key effect.
Reveal answer
Source/release site: Made in hypothalamus; released posterior pituitary. Key effect: Increases collecting-duct water reabsorption.
Key words: ADH
Higher-tier hormone map: for FSH, give the source/release site and the key effect.
Reveal answer
Source/release site: Anterior pituitary. Key effect: Follicle/oestrogen development; supports sperm production.
Key words: FSH
Higher-tier hormone map: for LH, give the source/release site and the key effect.
Reveal answer
Source/release site: Anterior pituitary. Key effect: Ovulation/progesterone; stimulates testosterone.
Key words: LH
True or false, and why? “The posterior pituitary makes ADH.”
Reveal answer
False. ADH is made in the hypothalamus and stored/released by the posterior pituitary.
True or false, and why? “FSH acts only in females.”
Reveal answer
False. It also supports sperm production in males.
True or false, and why? “LH is present only at ovulation.”
Reveal answer
False. Its concentration changes and it also acts in males.