International Board of Certified Lactation Consultant (IBCLC) Practice Exam

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What change occurs during mammogenesis?

  1. The size of the breast decreases

  2. The glandular tissue develops

  3. Milk production starts

  4. Breastfeeding usually stops

The correct answer is: The glandular tissue develops

During mammogenesis, the primary change that occurs is the development of glandular tissue within the breasts. This process is crucial for preparing the breast for future lactation. Mammogenesis involves the proliferation of cells, the formation of ducts, and the accumulation of specialized tissues capable of synthesizing and secreting milk. This development is essential during pregnancy as it sets the foundation for the mammary system to function effectively postpartum. The other choices do not accurately reflect the process of mammogenesis. For instance, the size of the breast typically increases due to hormonal influences and the expansion of glandular tissue and fat, rather than decreasing. While milk production does begin after childbirth, it occurs during lactogenesis, which follows the mammogenesis stage. Breastfeeding cessation is unrelated to mammogenesis, as it may occur well after the glandular tissue has developed and after lactation has started. Therefore, the focus on glandular tissue development is key to understanding mammogenesis.