Secreted by the hypothalamus that increases prolactin secretion by the anterior pituitary gland.
Prolactin-Inhibiting Hormone (PIH)
Secreted by the hypothalamus that decreases prolactin secretion by the anterior pituitary gland.
Prolactin
hormone secreted by the anterior pituitary gland that regulates milk production.
Projection Fiber
Axon that runs between the cerebral cortex and other structures such as the cerebellum. brain stem, and spinal cord.
Progesterone
A sex hormone secreted by the corpus luteum and placenta.
Progestational Phase
Menstrual phase in which there is a corpus luteum development; luteal or secratory phase
Primordial Follicle
Fluid-filled cavity that forms around the oocyte in the ovary at the beginning of the menstrual cycle.
Prime Mover
The main muscle that produces a particular movement; an agonist.