Hypothalamic–pituitary–prolactin axis Hypothalamic–pituitary–prolactin axis The hypothalamic–pituitary–prolactin axis (HPP axis), also known as the hypothalamic–pituitary–mammary axis or hypothalamic–pituitary–breast axis, is a hypothalamic–pituitary axis which includes the secretion of prolactin (PRL; luteotropin) from the lactotrophs of the pituitary gland into the circulation and the subsequent action of prolactin on tissues such as, particularly, the mammary glands or breasts. It is involved in lobuloalveolar maturation of the mammary glands during pregnancy and the induction and maintenance of lactation following parturition. Hormones that control the secretion of prolactin from the pituitary gland include dopamine ("prolactin-inhibiting factor", or "PIF"), estradiol, progesterone, thyrotropin-releasing hormone (TRH), and vasoactive intestinal
Tank controls 3D games. Most first-person shooter games still use a version of tank controls with the WASD keys, but the use of a mouse or analog stick makes turning easy. Tank controls Tank controls refers to a control system used in video games. In a game with tank controls, players control movement relative to the position of the player character. Pressing up (for example on a D-pad, analog stick, or cursor movement keys) on the game controller moves the character in the direction they face, down reverses them, and left and right rotates them. This differs from many 3D games, in