The nurse observes a 10-month-old infant using her index finger and thumb to pick up pieces of cereal.
What does this behavior indicate the infant has developed?
The pincer grasp.
Prehension ability.
A grasp reflex.
The parachute reflex.
The Correct Answer is A
Choice A rationale:
The pincer grasp is the coordination of the index finger and thumb to pick up small objects. It is a developmental milestone that typically occurs around 9-12 months of age. This behavior indicates that the infant has developed the ability to use the pincer grasp to manipulate objects. It is an essential skill for fine motor development and is a positive sign of the child's motor skills progressing.
Choice B rationale:
Prehension ability refers to the general ability to grasp objects but does not specifically describe the pincer grasp. While the infant is displaying a form of prehension by picking up cereal, the pincer grasp is a more specific and advanced skill.
Choice C rationale:
A grasp reflex is an automatic and involuntary response to touch, and it is typically present in newborns but should disappear as the infant develops. The behavior described in the question is not a grasp reflex, as it involves a deliberate use of the index finger and thumb.
Choice D rationale:
The parachute reflex is a protective reflex that appears later in infancy and involves extending the arms when the infant feels like they are falling. It is not relevant to the described behavior of picking up cereal with the fingers.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
The correct answer isChoice D.
Choice A rationale:
This choice suggests that the infant should weigh at least 12 pounds. However, this is not accurate.Babies grow and gain weight the fastest within the first 6 months of life.Although this can vary, babies tend to gain around 4–7 oz, or 113–200 grams (g), per week in the first 4–6 months.Weight gain then slows slightly, with an average gain of around 3–5 oz (about 85–140 g) per week when the baby is 6–18 months.Therefore, a 6-month-old baby girl in the 50th percentile weighs 16 pounds, 2 ounces (7.3 kilograms). Hence, 12 pounds is below the expected weight for a 6-month-old baby.
Choice B rationale:
This choice suggests that the infant should weigh at least 22 pounds. However, this is not accurate.The average weight for a 6-month-old baby girl is around 16 pounds, 2 ounces (7.3 kilograms). Therefore, 22 pounds is significantly above the average weight for a 6-month-old baby.
Choice C rationale:
This choice suggests that the infant should weigh at least 25 pounds. However, this is not accurate.The average weight for a 6-month-old baby girl is around 16 pounds, 2 ounces (7.3 kilograms). Therefore, 25 pounds is significantly above the average weight for a 6-month-old baby.
Choice D rationale:
This choice suggests that the infant should weigh at least 16 pounds. This is accurate.The average weight for a 6-month-old baby girl is around 16 pounds, 2 ounces (7.3 kilograms). Therefore, the nurse would expect the infant to weigh at least 16 pounds.
Correct Answer is D
Explanation
Choice A rationale:
The statement, "There are locks on all of the cabinets in the house," indicates a safe behavior. Locking cabinets helps prevent access to potentially harmful substances, reducing the risk of accidents for the child.
Choice B rationale:
The statement, "I have a gate at the top and bottom of the stairs," also indicates a safe behavior. Gates are important safety measures to prevent falls down the stairs, which can be dangerous for infants and young children.
Choice C rationale:
The statement, "I put covers on all of the electrical outlets," is another indicator of a safe behavior. Covering electrical outlets is essential to prevent children from inserting objects into them, reducing the risk of electrical accidents.
Choice D rationale:
The statement, "In the car, she rides in a front-facing car seat," indicates an unsafe behavior. For a 9-month-old infant, it is recommended to use a rear-facing car seat as they provide better support for the child's head, neck, and spine in the event of sudden stops or crashes. Front-facing car seats are typically suitable for older children. Therefore, this choice represents an unsafe practice that should be corrected.
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