OTHER ENDOCRINE TISSUES AND HORMONES
THE UTERUS
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AUTOCRINE AND PARACRINE SUBSTANCES
ADIPOSE TISSUES
DUODENUM
THE STOMACH
THE UTERUS
THE PLACENTA
THE KIDNEYS
THE THYMUS
PINEAL GLAND
THE HEART

RELAXIN IS SECRETED BY THE UTERUS IN THE LATTER STAGES OF PREGNANCY.  IT INCREASES THE FLEXIBILITY OF THE PELVIS AND THE DILATION OF THE CERVIX.