Which of the following organ systems faces the greatest physiological challenge in the transitional period after birth?
Muscular system
Integumentary system
Respiratory system
Circulatory system
Nervous system
The Correct Answer is C
A. Muscular system: Does not undergo a dramatic transition at birth.
B. Integumentary system: Adapts, but not as critically as the respiratory or circulatory systems.
C. Respiratory system: At birth, the newborn must shift from obtaining oxygen via the placenta to breathing air-a major physiological change.
D. Circulatory system: Also undergoes important changes (closure of fetal shunts), but the respiratory transition is more immediately life-sustaining.
E. Nervous system: Immature but does not require immediate postnatal adjustment for survival in the way the lungs do.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is {"dropdown-group-1":"A","dropdown-group-2":"A"}
Explanation
A. Proteins and carbohydrates; fats: Both proteins and carbohydrates yield approximately 4 kcal/g, while fats yield about 9 kcal/g due to their dense hydrocarbon structure.
B. Proteins; fats and carbohydrates: Carbohydrates do not yield 9 kcal/g; only fats do.
C. Fats; carbohydrates and proteins: Fats yield more energy, not less.
D. Carbohydrates; fats and proteins: Proteins and carbohydrates are equal in kcal/g; fats are higher.
E. Carbohydrates and fats; proteins: Fats yield the highest kcal/g, not proteins.
Correct Answer is B
Explanation
A. Nasal vestibule: The nasal vestibule is the anterior part of the nasal cavity just inside the nostrils, lined with skin and hair.
B. Nasal cavity: The nasal cavity is a large air-filled space behind the nose, extending from the nostrils to the choanae.
C. Nasal concha: The nasal conchae are curved bony projections (superior, middle, and inferior) inside the nasal cavity that increase the surface area for warming and humidifying air.
D. Sphenoid sinus: The sphenoid sinus is a hollow space within the sphenoid bone, located posterior to the nasal cavity and inferior to the sella turcica.
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