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An infant can move his head from side to side while following a moving object, can lift his head from a prone position 45 degrees off the examining table, smiles when encouraged, and makes cooing sounds. He cannot maintain a seated position. The most likely age of the infant is:
- A. 1 month
- B. 3 months
- C. 6 months
- D. 9 months
Correct Answer: B
Rationale: At 3 months, infants typically develop the ability to lift their heads 45 degrees in prone, follow objects with their eyes, smile responsively, and make cooing sounds. They are not yet able to sit independently.
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A 10-month-old child can do all the following EXCEPT
- A. says mama or dada
- B. follows one-step command without gesture
- C. points to objects or real first word
- D. speaks inhibition word 'no'
Correct Answer: D
Rationale: Speaking inhibition words like 'no' typically occurs later.
A client hyperparathyroidism declines surgery and is to receive hormone replacement therapy with estrogen and progesterone. Which of the following instructions would be most important to include in the client's teaching plan?
- A. maintain a moderate exercise
- B. Lose weight
- C. Jog at least 2 miles per day
- D. Rest as much as possible
Correct Answer: A
Rationale: The most important instruction to include in the client's teaching plan would be to maintain a moderate exercise routine (Option A). Regular physical activity is important for overall health, including helping to maintain bone health and strength. This is particularly crucial for individuals with hyperparathyroidism who are declining surgery and opting for hormone replacement therapy, as exercise can help to support bone density and reduce the risk of fractures. However, it is essential to emphasize that the exercise should be moderate and appropriate for the individual's current fitness level, as excessive exercise can have negative effects on bone health in this population.
The MOST likely cause of a 4-year-old boy refusing to go to bed and remaining active is
- A. thyrotoxicosis
- B. ADHD
- C. behavioral insomnia of childhood
- D. sleep-onset association disorder
Correct Answer: C
Rationale: Behavioral insomnia involves resistance to bedtime routines.
When a child injures the epiphyseal plate from a fracture, the damage may result in which of the following?
- A. Rheumatoid arthritis
- B. Permanent nerve damage
- C. Osteomyelitis
- D. Bone growth disruption
Correct Answer: D
Rationale: The epiphyseal plate, also known as the growth plate, is the area of growing tissue near the ends of the long bones in children and adolescents. It is crucial for bone growth and development. When a child injures the epiphyseal plate from a fracture, the damage can disrupt the normal growth process of the bone. This disruption can lead to unequal limb length, angular deformities, or other growth abnormalities. Therefore, the damage resulting from an injury to the epiphyseal plate may lead to bone growth disruption. Choices A, B, and C are not directly associated with epiphyseal plate injuries.
The activation of B cells in humoral immunity is assisted by which of the following?
- A. Cytotoxic T cells
- B. Suppressor T cells
- C. Helper T cells
- D. Neutrophils
Correct Answer: C
Rationale: In humoral immunity, the activation of B cells is facilitated by helper T cells. Helper T cells play a crucial role in coordinating the immune response by interacting with B cells. They secrete cytokines that stimulate B cells to proliferate and differentiate into antibody-secreting plasma cells. Without the assistance of helper T cells, the activation of B cells and the production of antibodies would be impaired. Cytotoxic T cells are involved in cell-mediated immunity, supressor T cells regulate immune response, and neutrophils are involved in phagocytosis and innate immunity, but they do not directly assist in B cell activation in humoral immunity.