IBCLC Exam 1 Questions and Answers 100% Pass

IBCLC Exam 1 Questions and Answers 100% Pass What week gestation does the breast begin to develop in utero? *4th* week of gestation Where does the primitive milk streak develop Bilaterally from the axilla to the groin By the 5th week gestation the milk streak becomes what? Mammary Milk Ridge (or milk line) Thickening and inward growth into the chest wall continues during what weeks gestation? *7-8* weeks gestation Between weeks 12 and 16 gestation specialized cells differentiate into what? Smooth muscles of the nipple and areola What forms the mammary pit? Lactiferous ducts and their branches open into a shallow epithelial depression What failure creates an inverted nipple? When the Mammary pit fails to elevate What is witches milk? 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? 10-12 years old (puberty) When does *complete* development of mammary function occur? During pregnancy What is superficial fiscia? Fibrous tissue beneath the skin Where is the breast located? In the superficial fascia between the *2nd rib and 6th ICS* What are the two major divisions of the breast? Parenchyma and Stroma What makes up the Parenchyma? Ducts, lobes, and aveoli What are alveoli? Small sacs where milk is secreted What makes up the Stroma? Connective and fat tissue, blood vessels, nerves, and lymphatics. What is Cooper's Ligament? Suspensory ligament that are the fibrous connections between the inner side of the breast skin and pectoral muscles. Help to shape the breasts What does the nipple contain? 15-25 milk ducts, smooth muscle fibers, sebaceous and apocrine sweat glands, and dense innervations of sensory nerve endings How many milk ducts does the nipple contain? 15-25 What are Montgomery Tubercles? Sebaceous glands in the areola surrounding the nipple What do the Montgomery Tubercles secrete? *Oily secretions* (lipoid fluid) to keep the areola and the nipple lubricated and protected