Multiple Choice
Normal microbiota:
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21. The Immune System
First-Line Defenses: Normal Microbiota
Multiple Choice
The human body typically begins to be colonized by its normal microflora:
A
Before birth, in utero.
B
When a child first goes to school.
C
During puberty.
D
During and immediately after birth.
E
When an infant gets its first infectious disease.
Verified step by step guidance1
Understand the concept of 'normal microflora': These are the microorganisms that reside in and on our bodies, playing a crucial role in health by preventing the colonization of harmful pathogens and aiding in digestion.
Recognize the timing of colonization: The human body begins to be colonized by normal microflora during and immediately after birth. This is because the infant is exposed to the mother's microbiota during delivery and the environment thereafter.
Consider the role of the birth process: During vaginal delivery, the infant is exposed to the mother's vaginal and intestinal flora, which initiates the colonization process.
Acknowledge post-birth factors: After birth, factors such as breastfeeding and contact with caregivers further contribute to the establishment of the infant's microflora.
Differentiate from other life stages: While microflora can change during other life stages like puberty or when attending school, the initial colonization begins at birth.
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