"2025 Burns’ Pediatric Primary Care 8th Ed. Master Test
Bank • 350 MCQs from Chapters 15–21 with Verified
Answers & Expert Rationales for Exam Excellence"
Chapter 15 -21
15.Breastfeeding
16.Sleep
17.Elimination
18.Physical Activity and Sports
19.Immunizations
20.Dental and Oral Health
,21.Pediatric Injury Prevention
Chapter 15.
Breastfeeding
1. A newborn is exhibiting rooting and sucking reflexes
immediately after birth. Which hormone surge
primarily triggers the initiation of milk ejection (“let-
down”)?
A. Prolactin
B. Oxytocin
C. Estrogen
D. Progesterone
Correct Answer: B
Rationale: Oxytocin causes myoepithelial cell
contraction around alveoli, triggering milk ejection.
Prolactin (A) stimulates milk production but not
ejection. Estrogen (C) and progesterone (D) support
mammary development but do not initiate let-down.
Adaptive Learning: If correct, proceed to a more
challenging question on neuroendocrine control of
, lactation. If incorrect, provide a remediation-level
question on basic lactation physiology.
2. Which of the following best describes the primary
role of prolactin during lactation?
A. Stimulates milk ejection
B. Promotes alveolar development and milk
synthesis
C. Causes uterine involution
D. Inhibits oxytocin release
Correct Answer: B
Rationale: Prolactin drives alveolar epithelial cells to
synthesize milk. Oxytocin (A) handles ejection.
Uterine involution (C) is also aided by oxytocin.
Prolactin does not inhibit oxytocin (D).
Adaptive Learning: If correct, move to application-
level scenarios of hormonal regulation. If incorrect,
review a remediation question on lactation
hormones.
3. During the first 5 days postpartum, colostrum
volume is approximately:
A. 5–10 mL per feed
B. 30–60 mL per feed
C. 100–150 mL per feed
D. 200–250 mL per feed
, Correct Answer: A
Rationale: Colostrum volumes are small (5–10 mL) to
match newborn stomach capacity. B, C, and D
overestimate early milk volumes.
Adaptive Learning: If correct, challenge with a
question on transitional milk composition. If
incorrect, remediate with foundational colostrum
volume basics.
4. Which component of breast milk provides passive
immunity by coating the infant’s mucosa?
A. Lactoferrin
B. Secretory IgA
C. Casein
D. Lysozyme
Correct Answer: B
Rationale: Secretory IgA adheres to gut mucosa,
preventing pathogen binding. Lactoferrin (A) binds
iron to inhibit bacteria. Casein (C) is a milk protein.
Lysozyme (D) has antibacterial action but less
mucosal coating role.
Adaptive Learning: If correct, proceed to an analysis
question on immunologic factors. If incorrect, revisit
immunology basics of breast milk.
Bank • 350 MCQs from Chapters 15–21 with Verified
Answers & Expert Rationales for Exam Excellence"
Chapter 15 -21
15.Breastfeeding
16.Sleep
17.Elimination
18.Physical Activity and Sports
19.Immunizations
20.Dental and Oral Health
,21.Pediatric Injury Prevention
Chapter 15.
Breastfeeding
1. A newborn is exhibiting rooting and sucking reflexes
immediately after birth. Which hormone surge
primarily triggers the initiation of milk ejection (“let-
down”)?
A. Prolactin
B. Oxytocin
C. Estrogen
D. Progesterone
Correct Answer: B
Rationale: Oxytocin causes myoepithelial cell
contraction around alveoli, triggering milk ejection.
Prolactin (A) stimulates milk production but not
ejection. Estrogen (C) and progesterone (D) support
mammary development but do not initiate let-down.
Adaptive Learning: If correct, proceed to a more
challenging question on neuroendocrine control of
, lactation. If incorrect, provide a remediation-level
question on basic lactation physiology.
2. Which of the following best describes the primary
role of prolactin during lactation?
A. Stimulates milk ejection
B. Promotes alveolar development and milk
synthesis
C. Causes uterine involution
D. Inhibits oxytocin release
Correct Answer: B
Rationale: Prolactin drives alveolar epithelial cells to
synthesize milk. Oxytocin (A) handles ejection.
Uterine involution (C) is also aided by oxytocin.
Prolactin does not inhibit oxytocin (D).
Adaptive Learning: If correct, move to application-
level scenarios of hormonal regulation. If incorrect,
review a remediation question on lactation
hormones.
3. During the first 5 days postpartum, colostrum
volume is approximately:
A. 5–10 mL per feed
B. 30–60 mL per feed
C. 100–150 mL per feed
D. 200–250 mL per feed
, Correct Answer: A
Rationale: Colostrum volumes are small (5–10 mL) to
match newborn stomach capacity. B, C, and D
overestimate early milk volumes.
Adaptive Learning: If correct, challenge with a
question on transitional milk composition. If
incorrect, remediate with foundational colostrum
volume basics.
4. Which component of breast milk provides passive
immunity by coating the infant’s mucosa?
A. Lactoferrin
B. Secretory IgA
C. Casein
D. Lysozyme
Correct Answer: B
Rationale: Secretory IgA adheres to gut mucosa,
preventing pathogen binding. Lactoferrin (A) binds
iron to inhibit bacteria. Casein (C) is a milk protein.
Lysozyme (D) has antibacterial action but less
mucosal coating role.
Adaptive Learning: If correct, proceed to an analysis
question on immunologic factors. If incorrect, revisit
immunology basics of breast milk.
