Hormones Flashcards

1
Q

Action of GnRH

A

Triggers release of FSH and LH

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2
Q

Control of GnRH release

A

Released in pulsatile fashion, More released when aroused or there are high levels of oestrogen, Inhibited by oestrogen, testosterone, and prolactin

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3
Q

Action of FSH

A

Triggers spermatogenesis and development of follicles

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4
Q

Control of FSH

A

Released due to GnRH, Inhibited by inhibin

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5
Q

Action of LH

A

Trigger androgen production, Trigger ovulation

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6
Q

Control of LH

A

Released due to GnRH

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7
Q

Action of oestrogen

A

Trigger endometrium growth, Secrete alkali cervical mucus

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8
Q

Sites of oestrogen release

A

Theca and granulosa, Corpus luteum, Placenta

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9
Q

Action of progesterone

A

Increase negative feedback and decrease positive feedback of oestrogen, Secrete acid cervical mucus, Trigger endometrium growth

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10
Q

Sites of progesterone release

A

Theca and granulosa, Corpus luteum, Placenta

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11
Q

Action of inhibin

A

Inhibits FSH

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12
Q

Site of release of inhibin

A

Sertoli and granulosa cells

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13
Q

Describe the pattern of FSH levels over the menstrual cycle

A

Highest in the follicular phase, Slight peak during ovulation

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14
Q

Describe the pattern of LH levels over the menstrual cycle

A

Surge during ovulation

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15
Q

Describe the pattern of oestrogen levels over the menstrual cycle

A

Peak during ovulation, Rises during luteal phase

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16
Q

Describe the pattern of progesterone levels over the menstrual cycle

A

Highest during the luteal phase