One physician notes that clinical observation shows that breastfeeding contractions do not produce dilation of the cervix. Accordingly, in the Moscona survey of 57 mothers breastfeeding during pregnancy, only four women (seven percent) recalled contractions related to breastfeeding at all.
The pituitary gland itself consists of a larger anterior lobe that makes the following hormones: adrenocorticotropic hormone (ACTH), thyroid-stimulating hormone (TSH), luteinizing hormone (LH), follicle-stimulating hormone (FSH), growth hormone (GH) and Prolactin.
In response to electrical messages from the hypothalamus, the pituitary gland releases the following hormones: 1  ADH (antidiuretic hormone) - stimulates the kidneys to reabsorb fluid and produce less urine. 2  Oxytocin - initiates labor, uterine contractions and milk ejection in mothers.