Which of the following is the most numerous type of white blood cell (WBC)?

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Question 1 of 5

Which of the following is the most numerous type of white blood cell (WBC)?

Correct Answer: A

Rationale: Neutrophils are the most numerous type of white blood cell (WBC) in the body, comprising about 60-70% of the total WBC count. They are a critical component of the immune system, playing a key role in fighting bacterial infections through phagocytosis (engulfing and destroying pathogens). Neutrophils are known for their rapid response to infections and are often the first responders to sites of inflammation. Their abundance and rapid mobilization make them essential in the body's defense against harmful pathogens.

Question 2 of 5

In fetal period, all are true EXCEPT

Correct Answer: D

Rationale: Face recognition typically occurs earlier than 26 weeks.

Question 3 of 5

The nurse has taught a patient with thrombocytopenia how to prevent bleeding. Which of the ff. is the best evidence that the teaching has been effective?

Correct Answer: C

Rationale: The best evidence that the teaching has been effective is when the patient uses an electric razor instead of his safety razor. This action demonstrates understanding and application of the teaching to prevent bleeding in a practical way. By choosing the electric razor, the patient is actively taking steps to minimize the risk of injury and bleeding due to thrombocytopenia. This concrete behavior indicates that the patient has internalized the instructions provided by the nurse and is implementing them to protect his health.

Question 4 of 5

As the nurse collects data on a patient, which of the following is a symptom that may be found that the patient with anaphylaxis may be experiencing?

Correct Answer: D

Rationale: Wheezing is a common symptom of anaphylaxis, along with other signs such as difficulty breathing, chest tightness, coughing, and throat swelling. Wheezing is caused by the constriction of the airways due to the body's extreme immune response to the allergen, leading to difficulty in breathing and wheezing sounds during respiration. It is important for healthcare professionals to recognize wheezing as a symptom of anaphylaxis and respond promptly with appropriate interventions, such as administering epinephrine and providing respiratory support.

Question 5 of 5

A patient visits her nurse practitioner (NP) after she has a cold for a week and is now experiencing a severe headache and fever. Her NP diagnoses a sinus infection. Which of the following additional symptoms is the patient likely to exhibit?

Correct Answer: A

Rationale: Sinus infections, also known as sinusitis, are often characterized by symptoms such as congestion, facial pain or pressure, and nasal discharge. Facial tenderness over the affected sinuses, particularly when tapping on the area, is a common symptom associated with sinus infections due to the inflammation and buildup of mucus in the sinuses. This tenderness is often present in the cheeks, forehead, or around the eyes. The other symptoms mentioned in the choices (photophobia, chest pain, ear drainage) are less commonly associated with sinus infections compared to facial tenderness.

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