Roles of Hormones in Parturition & Lactation Flashcards

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1
Q

what is parturition?

A

giving birth

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2
Q

what allows other hormones to effect uterine muscles?

A

decrease in progesterone levels

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3
Q

what happens due to the levels of oestrogen & oxytocin to rise?

A

uterine contractions & cervical softening - parturition begins.

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4
Q

what hormone is secreted by the ovaries?

A

relaxin

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5
Q

what does relaxin do?

A

relaxes the pelvic ligaments & opens birth canal

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6
Q

what happens to the oestrogen & progesterone levels to allow secretion of prolactin?

A

they drop

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7
Q

what triggers lactation?

A

the secretion of prolactin.

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8
Q

when is cortisol released?

A

when animals are stressed

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9
Q

what is cortisols role in giving birth?

A

body prioritises making cortisol so progesterone levels drop making a high oestrogen: progesterone ratio –> early labour

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10
Q

what is lactation?

A

production of milk by the females mammary system.

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11
Q

what does lactation allow?

A

allows the mother to provide offspring with nutritious milk to aid its survival.

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12
Q

what stimulates milk release?

A

offspring suckling, sight of offspring, sound of milking machines.

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13
Q

what do hormones help with during lactation?

A

starting milk production, stimulates milk let down & restarts the reproductive process.

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14
Q

what does prolactin do in lactation?

A

starts the lactation process as it triggers mammary gland to start milk production.

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15
Q

what does oxytocin do in lactation?

A

is stimulated due to the offspring suckling at the teat & leads to milk production

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