IBCLC Exam #1 | QUESTIONS &
ANSWERS (VERIFIED) | LATEST
UPDATE | GRADED A+
What week gestation does the breast begin to develop in utero?
Correct Answer: *4th* week of gestation
Where does the primitive milk streak develop
Correct Answer: Bilaterally 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
1
,What forms the mammary pit?
Correct Answer: Lactiferous ducts and their branches open into a shallow epithelial
depression
What failure 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 (puberty)
When does *complete* development of mammary function occur?
Correct Answer: During pregnancy
What is superficial fiscia?
Correct Answer: Fibrous tissue beneath the skin
Where is the breast located?
Correct Answer: In the superficial fascia between the *2nd rib and 6th ICS*
2
,What are the two major divisions of the breast?
Correct Answer: Parenchyma and Stroma
What makes up the Parenchyma?
Correct Answer: Ducts, lobes, and aveoli
What are alveoli?
Correct Answer: Small sacs where milk is secreted
What makes up the Stroma?
Correct Answer: Connective and fat tissue, blood vessels, nerves, and lymphatics.
What is Cooper's Ligament?
Correct Answer: 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?
Correct Answer: 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?
Correct Answer: 15-25
3
, What are Montgomery Tubercles?
Correct Answer: Sebaceous glands in the areola surrounding the nipple
What do the Montgomery Tubercles secrete?
Correct Answer: *Oily secretions* (lipoid fluid) to keep the areola and the nipple
lubricated and protected
What 2 arteries supply blood to the breast (60% / 30%)?
Correct Answer: Internal mammary artery (60%) and lateral thoracic artery (30%)
Where does the lymphatic system of the breast drain excess fluids from tissue space,
bacteria and cast off cells?
Correct Answer: Auxiliary lymph node
Where do the nerves of the breast branch from?
Correct Answer: 4th, 5th, and 6th intercostal nerve
What nerve supplies the greatest amount of *sensation* to the areola?
Correct Answer: *4th* intercostal nerve
What part of the breast is most sensitive?
4
ANSWERS (VERIFIED) | LATEST
UPDATE | GRADED A+
What week gestation does the breast begin to develop in utero?
Correct Answer: *4th* week of gestation
Where does the primitive milk streak develop
Correct Answer: Bilaterally 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
1
,What forms the mammary pit?
Correct Answer: Lactiferous ducts and their branches open into a shallow epithelial
depression
What failure 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 (puberty)
When does *complete* development of mammary function occur?
Correct Answer: During pregnancy
What is superficial fiscia?
Correct Answer: Fibrous tissue beneath the skin
Where is the breast located?
Correct Answer: In the superficial fascia between the *2nd rib and 6th ICS*
2
,What are the two major divisions of the breast?
Correct Answer: Parenchyma and Stroma
What makes up the Parenchyma?
Correct Answer: Ducts, lobes, and aveoli
What are alveoli?
Correct Answer: Small sacs where milk is secreted
What makes up the Stroma?
Correct Answer: Connective and fat tissue, blood vessels, nerves, and lymphatics.
What is Cooper's Ligament?
Correct Answer: 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?
Correct Answer: 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?
Correct Answer: 15-25
3
, What are Montgomery Tubercles?
Correct Answer: Sebaceous glands in the areola surrounding the nipple
What do the Montgomery Tubercles secrete?
Correct Answer: *Oily secretions* (lipoid fluid) to keep the areola and the nipple
lubricated and protected
What 2 arteries supply blood to the breast (60% / 30%)?
Correct Answer: Internal mammary artery (60%) and lateral thoracic artery (30%)
Where does the lymphatic system of the breast drain excess fluids from tissue space,
bacteria and cast off cells?
Correct Answer: Auxiliary lymph node
Where do the nerves of the breast branch from?
Correct Answer: 4th, 5th, and 6th intercostal nerve
What nerve supplies the greatest amount of *sensation* to the areola?
Correct Answer: *4th* intercostal nerve
What part of the breast is most sensitive?
4
