This peptide from the anterior pituitary stimulates lipolysis and steroidogenesis and promotes the production of melanin by melanocytes.

Lipotropin

This peptide from the anterior pituitary stimulates the maturation of Graafian follicles in the ovary in females and spermatogenesis in males, enhancing the production of androgen-binding protein by Sertoli cells.

Follicle-stimulating hormone

This peptide is produced in the corpus luteum, uterus, placenta, and mammary gland and is involved in the relaxation of muscle and ligament tissues in preparation for menstruation.

Relaxin

This peptide from the small intestine stimulates gastric activity.

Motilin

This eicosanoid found in blood causes vasoconstriction and promotes platelet aggregation.

Thromboxane

This peptide from the hypothalamus stimulates the release of prolactin from the anterior pituitary.

Prolactin-releasing hormone

This amino acid derivative is produced by the adrenal gland and influences nearly all tissues in the body. It increases both systolic and diastolic blood pressure, stimulates glycogenolysis and lipolysis, and enhances metabolism.

Noradrenaline (or norepinephrine)

This peptide from the anterior pituitary and uterus stimulates milk production in mammary glands and sexual gratification after sexual acts.

Prolactin (or leuteotropic hormone)

These eicosanoids found in blood are responsible for increasing vascular permeability.

Leukotrienes

This amino acid derivative, produced by the thyroid gland, impacts nearly every cell in the body by increasing metabolism.

Triiodothyronine