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IBCLC EXAM QUESTIONS AND ANSWERS 2025 When does the breast begin to develop in utero? - correct answer- 4th week of gestation Where does the primitive milk streak develop - correct answerBilaterally from the axilla to the groin By the 5th week gestation the milk streak becomes what? correct answer- Mammary Milk Ridge (or milk line) Thickening and inward growth into the chest wall continues during what weeks gestation? - correct answer- 7-8 weeks gestation Between weeks 12 and 16 gestation specialized cells differentiate into what? - correct answer- Smooth muscles of the nipple and areola 2 | Page What forms the mammary pit? - correct answer- Lactiferous ducts and their branches open into a shallow epithelial depression What creates an inverted nipple? - correct answer- When the Mammary pit fails to elevate What is witches milk? - correct answer- After birth, a neonate's mammary tissue (under the influence of maternal hormones) might recreate colostral like fluid At what age do the primary and secondary ducts grow and divide and form the terminal end buds that become the alveoli? - correct answer- 10-12 years old When does complete development of mammary function occur? - correct answer- During pregnancy What is superficial fiscia? - correct answer- Fibrous tissue beneath the skin 3 | Page Where is the breast located? - correct answer- In the superficial fascia between the second rib and sixth intercostal space What are the two major divisions of the br ... Purchase document to see full attachment