Prior to the let-down reflex,the mammary glands secrete a yellowish fluid called ________ that has less lactose than milk and almost no fat.

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The yellowish fluid secreted by the mammary glands prior to the let-down reflex is called colostrum. Colostrum has less lactose than milk and almost no fat, but it is rich in nutrients and antibodies. Bilirubin is a yellow pigment that is formed during the breakdown of old red blood cells and is involved in the development of jaundice. Meconium is the first stool passed by a newborn and is typically greenish-black in color. Prolactin is a hormone responsible for stimulating milk production.

Prior to the Let-Down Reflex,the Mammary Glands Secrete a Yellowish