Which statement is accurate concerning a child's musculoskeletal system and how it may be different from an adult's?
Their bones have less blood flow.
Growth occurs in children as a result of an increase in the number of muscle fibres.
Infants are at greater risk for fractures because their epiphyseal plates are not fused.
Because soft tissues are resilient in children, dislocations and sprains are less common than in adults.
The Correct Answer is C
Infants and children have open growth plates, also known as epiphyseal plates, at the ends of
their long bones. These plates are responsible for bone growth and are not fully fused until
the child reach skeletal maturity. Due to the presence of open growth plates, infants and
children are more prone to fractures because their bones are still developing and are less
dense than those of adults.
Their bones have less blood flow in (Option A) is incorrect because cchildren’s bones
actually have a greater blood flow compared to adults. This increased blood flow supports the
rapid growth and development of bones in children.
Growth occurs in children as a result of an increase in the number of muscle fibers in (option
B) is incorrect because ggrowth in children occurs primarily due to the elongation and
thickening of existing muscle fibres, not an increase in their number. This option inaccurately
suggests that children's muscles increase in fibber count to facilitate growth.
Because soft tissues are resilient in children, dislocations and spirals are less common than in
adults in (Option D is) incorrect. While soft tissues may be more resilient in children, it does
not mean that dislocations and sprains are less common than in adults. In fact, children's
ligaments and joint structures are still developing and may be more susceptible to injuries
such as sprains and dislocations compared to adults.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. The harness maintains the hips in flexion, abduction, and external rotation
The factor that the nurse should include when teaching a parent about the care of a newborn
in a Pavlik harness for hip dysplasia is that the harness maintains the hips in flexion,
abduction, and external rotation. The Pavlik harness is a commonly used device for the
treatment of developmental dysplasia of the hip (DDH) in infants. It is designed to hold the
hips in a position that promotes proper alignment and development.
The harness maintains the hips in flexion, abduction and external rotation in (Option B) is
incorrect. The Pavlik harness should not be removed with every diaper change. The harness
needs to be worn consistently as directed by the healthcare provider to ensure the
effectiveness of the treatment.
The harness is the only first step of treatment in (Option C) is incorrect. While the Pavlik
harness is an important step in the treatment of hip dysplasia, it is not the only step.
Additional treatments, such as bracing or surgical interventions, may be required depending
on the severity of the condition.
The harness in worn for 2 weeks in (Option D) is incorrect. The duration for which the Pavlik
harness is worn can vary depending on the individual case and the healthcare provider's
instructions. It is typically worn for several weeks to months, and the specific duration will be
determined by the healthcare provider based on the child's progress and response to
treatment.
Correct Answer is B
Explanation
The regulation of acid-base balance in the body involves multiple systems working together. The respiratory system, renal system, and chemical-buffering systems play key roles in maintaining the balance of acids and bases in the body.
The respiratory system helps regulate acid-base balance through the control of carbon dioxide (CO2) levels in the blood. By adjusting the rate and depth of breathing, the respiratory system can increase or decrease the elimination of CO2, which affects the pH of the blood.
The renal system (kidneys) plays a crucial role in regulating acid-base balance by controlling the excretion and reabsorption of hydrogen ions (H+) and bicarbonate ions (HCO3-) in the urine. The kidneys can excrete excess acids or bases to help maintain the body's pH within a normal range.
The chemical-buffering systems involve various chemical compounds in the body that can absorb or release hydrogen ions to help maintain pH balance. Examples of chemical buffers include bicarbonate ions (HCO3-), phosphate ions (HPO4-), and proteins.
the cardiovascular and integumentary systemin (option A) is incorrect because they, are not primarily responsible for regulating acid-base balance in the body.
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