©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
IBCLC Exam #1 Practice Questions and Answers
What week gestation does the breast begin to develop in utero? - Ans:✔✔-*4th* week of gestation
Where does the primitive milk streak develop - Ans:✔✔-Bilaterally from the axilla to the groin
By the 5th week gestation the milk streak becomes what? - Ans:✔✔-Mammary Milk Ridge (or milk line)
Thickening and inward growth into the chest wall continues during what weeks gestation? - Ans:✔✔-*7-
8* weeks gestation
Between weeks 12 and 16 gestation specialized cells differentiate into what? - Ans:✔✔-Smooth muscles
of the nipple and areola
What forms the mammary pit? - Ans:✔✔-Lactiferous ducts and their branches open into a shallow
epithelial depression
What failure creates an inverted nipple? - Ans:✔✔-When the Mammary pit fails to elevate
What is witches milk? - Ans:✔✔-After birth, a neonate's mammary tissue (under the influence of
maternal hormones) might recreate colostral like fluid
Page 1/39
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
At what age do the primary and secondary ducts grow and divide and form the terminal end buds that
become the alveoli? - Ans:✔✔-10-12 years old (puberty)
When does *complete* development of mammary function occur? - Ans:✔✔-During pregnancy
What is superficial fiscia? - Ans:✔✔-Fibrous tissue beneath the skin
Where is the breast located? - Ans:✔✔-In the superficial fascia between the *2nd rib and 6th ICS*
What are the two major divisions of the breast? - Ans:✔✔-Parenchyma and Stroma
What makes up the Parenchyma? - Ans:✔✔-Ducts, lobes, and aveoli
What are alveoli? - Ans:✔✔-Small sacs where milk is secreted
What makes up the Stroma? - Ans:✔✔-Connective and fat tissue, blood vessels, nerves, and lymphatics.
What is Cooper's Ligament? - Ans:✔✔-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? - Ans:✔✔-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? - Ans:✔✔-15-25
What are Montgomery Tubercles? - Ans:✔✔-Sebaceous glands in the areola surrounding the nipple
Page 2/39
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
What do the Montgomery Tubercles secrete? - Ans:✔✔-*Oily secretions* (lipoid fluid) to keep the areola
and the nipple lubricated and protected
What 2 arteries supply blood to the breast (60% / 30%)? - Ans:✔✔-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? - Ans:✔✔-Auxiliary lymph node
Where do the nerves of the breast branch from? - Ans:✔✔-4th, 5th, and 6th intercostal nerve
What nerve supplies the greatest amount of *sensation* to the areola? - Ans:✔✔-*4th* intercostal
nerve
What part of the breast is most sensitive? - Ans:✔✔-The areola followed by the general skin of the
breast, and then the nipple which is least sensitive.
What percent of breast milk is *carbohydrates*? - Ans:✔✔-Approximately 7%
What are the six infant behavioral "states" - Ans:✔✔-*Crying*
*Active alert*=fussy
*Quiet alert*=ready to play
*Drowsy*= irreg. breathing, heavy eyes
Page 3/39
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
*Active sleep*= eye movement under lids, twitching
*Quiet sleep*= reg resp. relaxed, diff. to wake
Milk components that protect the infant/lactating breast actively bind ______, preventing their passage
through the permeable infant _____ _____ - Ans:✔✔-pathogens
gut mucosa
How does the infant get the antibodies produced by mom? - Ans:✔✔-antibodies are produced in moms
blood, targeted *SIgA* which is transported across the mammary secretory cells and released in the
milk.
What is sIgA? - Ans:✔✔-Immunoglobulin A is an antibody that coats mucosal surfaces to prevent
adherence and penetration by pathogens
What are the most common food allergies? - Ans:✔✔-1. Cow's milk protein
2. Eggs
3. Peanuts
4. Tree nuts
5. Fish
Page 4/39
FIRST PUBLISH OCTOBER 2024
IBCLC Exam #1 Practice Questions and Answers
What week gestation does the breast begin to develop in utero? - Ans:✔✔-*4th* week of gestation
Where does the primitive milk streak develop - Ans:✔✔-Bilaterally from the axilla to the groin
By the 5th week gestation the milk streak becomes what? - Ans:✔✔-Mammary Milk Ridge (or milk line)
Thickening and inward growth into the chest wall continues during what weeks gestation? - Ans:✔✔-*7-
8* weeks gestation
Between weeks 12 and 16 gestation specialized cells differentiate into what? - Ans:✔✔-Smooth muscles
of the nipple and areola
What forms the mammary pit? - Ans:✔✔-Lactiferous ducts and their branches open into a shallow
epithelial depression
What failure creates an inverted nipple? - Ans:✔✔-When the Mammary pit fails to elevate
What is witches milk? - Ans:✔✔-After birth, a neonate's mammary tissue (under the influence of
maternal hormones) might recreate colostral like fluid
Page 1/39
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
At what age do the primary and secondary ducts grow and divide and form the terminal end buds that
become the alveoli? - Ans:✔✔-10-12 years old (puberty)
When does *complete* development of mammary function occur? - Ans:✔✔-During pregnancy
What is superficial fiscia? - Ans:✔✔-Fibrous tissue beneath the skin
Where is the breast located? - Ans:✔✔-In the superficial fascia between the *2nd rib and 6th ICS*
What are the two major divisions of the breast? - Ans:✔✔-Parenchyma and Stroma
What makes up the Parenchyma? - Ans:✔✔-Ducts, lobes, and aveoli
What are alveoli? - Ans:✔✔-Small sacs where milk is secreted
What makes up the Stroma? - Ans:✔✔-Connective and fat tissue, blood vessels, nerves, and lymphatics.
What is Cooper's Ligament? - Ans:✔✔-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? - Ans:✔✔-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? - Ans:✔✔-15-25
What are Montgomery Tubercles? - Ans:✔✔-Sebaceous glands in the areola surrounding the nipple
Page 2/39
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
What do the Montgomery Tubercles secrete? - Ans:✔✔-*Oily secretions* (lipoid fluid) to keep the areola
and the nipple lubricated and protected
What 2 arteries supply blood to the breast (60% / 30%)? - Ans:✔✔-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? - Ans:✔✔-Auxiliary lymph node
Where do the nerves of the breast branch from? - Ans:✔✔-4th, 5th, and 6th intercostal nerve
What nerve supplies the greatest amount of *sensation* to the areola? - Ans:✔✔-*4th* intercostal
nerve
What part of the breast is most sensitive? - Ans:✔✔-The areola followed by the general skin of the
breast, and then the nipple which is least sensitive.
What percent of breast milk is *carbohydrates*? - Ans:✔✔-Approximately 7%
What are the six infant behavioral "states" - Ans:✔✔-*Crying*
*Active alert*=fussy
*Quiet alert*=ready to play
*Drowsy*= irreg. breathing, heavy eyes
Page 3/39
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
*Active sleep*= eye movement under lids, twitching
*Quiet sleep*= reg resp. relaxed, diff. to wake
Milk components that protect the infant/lactating breast actively bind ______, preventing their passage
through the permeable infant _____ _____ - Ans:✔✔-pathogens
gut mucosa
How does the infant get the antibodies produced by mom? - Ans:✔✔-antibodies are produced in moms
blood, targeted *SIgA* which is transported across the mammary secretory cells and released in the
milk.
What is sIgA? - Ans:✔✔-Immunoglobulin A is an antibody that coats mucosal surfaces to prevent
adherence and penetration by pathogens
What are the most common food allergies? - Ans:✔✔-1. Cow's milk protein
2. Eggs
3. Peanuts
4. Tree nuts
5. Fish
Page 4/39
