Identify the trimester when each fetal development finding occurs.
Select the appropriate trimester for each finding:
Formation of fingers, toes, and facial features
Fetus can hear and respond to external stimuli
Increase in body fat reserves
Brain develops most rapidly during this time
Gender can be determined
The Correct Answer is {"A":{"answers":"A"},"B":{"answers":"B"},"C":{"answers":"C"},"D":{"answers":"C"},"E":{"answers":"B"}}
A. Formation of fingers, toes, and facial features
Correct Trimester: 1st Trimester (Conception – 13 weeks)
Explanation:
By the end of the 1st trimester, organogenesis (organ formation) is largely complete.
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Weeks 7–8: Limb buds appear and begin differentiating into arms and legs.
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Weeks 9–12: Fingers, toes, facial features (eyes, nose, lips, ears) become clearly defined.
This is a critical period for congenital malformations if exposed to teratogens.
B. Fetus can hear and respond to external stimuli
Correct Trimester: 2nd Trimester (14–26 weeks)
Explanation:
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Around 18–20 weeks: The fetus develops the ability to hear sounds.
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External sounds can startle the fetus, and the heartbeat may change in response.
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Mother's voice and music can be recognized at this stage.
C. Increase in body fat reserves
Correct Trimester: 3rd Trimester (27–40 weeks)
Explanation:
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In the final trimester, especially after week 32, fat accumulates under the skin.
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This provides energy and helps with temperature regulation after birth.
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The fetus also gains the most weight during this period.
D. Brain develops most rapidly during this time
Correct Trimester: 3rd Trimester (27–40 weeks)
Explanation:
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Although brain development starts early, the most rapid growth occurs in the third trimester.
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There's a dramatic increase in brain volume, cortical folding, and neural connectivity.
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This trimester is essential for cognitive and motor development.
E. Gender can be determined
Correct Trimester: 2nd Trimester (14–26 weeks)
Explanation:
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By week 18–20, an ultrasound can reliably show external genitalia.
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The sex organs begin forming in the 1st trimester, but become distinct and visible by the 2nd trimester.
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This is when many parents find out the baby's gender via an anatomy scan.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","D"]
Explanation
Choice A rationale
A large bruise on the forehead of a 2-year-old could occur from accidental falls, which are common at this developmental stage due to increased mobility and decreased coordination. It does not necessarily suggest abuse unless accompanied by other suspicious findings.
Choice B rationale
Circular abrasions around the wrists are highly indicative of physical abuse as they suggest binding injuries. Restraining a child is neither acceptable nor normal, and such findings must be reported for further investigation by child protective services.
Choice C rationale
A burn on the palm of a 10-year-old’s hand raises concerns for abuse as accidental burns usually occur on accessible areas like arms or legs, not the palm. This pattern could indicate intentional infliction, requiring mandatory reporting to authorities.
Choice D rationale
Splash burns on the front torso in a 6-year-old are suspicious if inconsistent with the child’s developmental abilities or history provided by caregivers. Intentional scald burns often follow specific patterns, like splash marks, and must be reported for investigation.
Correct Answer is C
Explanation
Choice A rationale
Acrocyanosis, or bluish discoloration of extremities, is a normal newborn finding reflecting immature circulation and does not pose a risk for jaundice. It resolves as circulatory function matures and is unrelated to bilirubin metabolism or hemolysis.
Choice B rationale
Mongolian spots are benign pigmented birthmarks caused by trapped melanocytes in the dermis. These spots have no connection to jaundice and do not reflect bilirubin accumulation or red blood cell breakdown.
Choice C rationale
Cephalohematoma results from birth trauma, causing localized blood collection between the skull and periosteum. The breakdown of pooled blood increases bilirubin production, raising jaundice risk. This complication reflects excessive hemolysis, leading to bilirubin elevation.
Choice D rationale
Caput succedaneum involves superficial scalp swelling due to delivery pressure. Unlike cephalohematoma, it does not contribute to hemolysis or bilirubin accumulation. It resolves spontaneously and poses no risk for jaundice development.
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