concept of negative feedback

What is negative feedback in the context of hormonal axes?

It is when a hormone inhibits the release of hormones earlier in the axis to regulate its own levels.

How does negative feedback work in the thyroid axis?

Thyroid Hormone (TH) inhibits the release of TSH from the anterior pituitary and TRH from the hypothalamus.

What is the primary function of Prolactin (PRL)?

It promotes milk production and mammary gland growth.

What behavioral role does Prolactin (PRL) play?

It causes parental behaviors in many species.

What are some other effects of PRL in mammals?

It influences hair growth and sebaceous gland activity.

What does Prolactin (PRL) do in birds?

It promotes feather growth, brood patch development, and crop milk production in pigeons.